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Pull more io_uring updates from Jens Axboe:
"Set of fixes/updates for io_uring that should go into this release.
The ublk bits could've gone via either tree - usually I put them in
block, but they got a bit mixed this series with the zero-copy
supported that ended up dipping into both trees.
This contains:
- Fix for sendmsg zc, include in pinned pages accounting like we do
for the other zc types
- Series for ublk fixing request aborting, doing various little
cleanups, fixing some zc issues, and adding queue_rqs support
- Another ublk series doing some code cleanups
- Series cleaning up the io_uring send path, mostly in preparation
for registered buffers
- Series doing little MSG_RING cleanups
- Fix for the newly added zc rx, fixing len being 0 for the last
invocation of the callback
- Add vectored registered buffer support for ublk. With that, then
ublk also supports this feature in the kernel revision where it
could generically introduced for rw/net
- A bunch of selftest additions for ublk. This is the majority of the
diffstat
- Silence a KCSAN data race warning for io-wq
- Various little cleanups and fixes"
* tag 'io_uring-6.15-20250403' of git://git.kernel.dk/linux: (44 commits)
io_uring: always do atomic put from iowq
selftests: ublk: enable zero copy for stripe target
io_uring: support vectored kernel fixed buffer
block: add for_each_mp_bvec()
io_uring: add validate_fixed_range() for validate fixed buffer
selftests: ublk: kublk: fix an error log line
selftests: ublk: kublk: use ioctl-encoded opcodes
io_uring/zcrx: return early from io_zcrx_recv_skb if readlen is 0
io_uring/net: avoid import_ubuf for regvec send
io_uring/rsrc: check size when importing reg buffer
io_uring: cleanup {g,s]etsockopt sqe reading
io_uring: hide caches sqes from drivers
io_uring: make zcrx depend on CONFIG_IO_URING
io_uring: add req flag invariant build assertion
Documentation: ublk: remove dead footnote
selftests: ublk: specify io_cmd_buf pointer type
ublk: specify io_cmd_buf pointer type
io_uring: don't pass ctx to tw add remote helper
io_uring/msg: initialise msg request opcode
io_uring/msg: rename io_double_lock_ctx()
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt driver updates for
6.15-rc1. Included in here are:
- Thunderbolt driver and core api updates for new hardware and
features
- usb-storage const array cleanups
- typec driver updates
- dwc3 driver updates
- xhci driver updates and bugfixes
- small USB documentation updates
- usb cdns3 driver updates
- usb gadget driver updates
- other small driver updates and fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (92 commits)
thunderbolt: Do not add non-active NVM if NVM upgrade is disabled for retimer
thunderbolt: Scan retimers after device router has been enumerated
usb: host: cdns3: forward lost power information to xhci
usb: host: xhci-plat: allow upper layers to signal power loss
usb: xhci: change xhci_resume() parameters to explicit the desired info
usb: cdns3-ti: run HW init at resume() if HW was reset
usb: cdns3-ti: move reg writes to separate function
usb: cdns3: call cdns_power_is_lost() only once in cdns_resume()
usb: cdns3: rename hibernated argument of role->resume() to lost_power
usb: xhci: tegra: rename `runtime` boolean to `is_auto_runtime`
usb: host: xhci-plat: mvebu: use ->quirks instead of ->init_quirk() func
usb: dwc3: Don't use %pK through printk
usb: core: Don't use %pK through printk
usb: gadget: aspeed: Add NULL pointer check in ast_vhub_init_dev()
dt-bindings: usb: qcom,dwc3: Synchronize minItems for interrupts and -names
usb: common: usb-conn-gpio: switch psy_cfg from of_node to fwnode
usb: xhci: Avoid Stop Endpoint retry loop if the endpoint seems Running
usb: xhci: Don't change the status of stalled TDs on failed Stop EP
xhci: Avoid queuing redundant Stop Endpoint command for stalled endpoint
xhci: Handle spurious events on Etron host isoc enpoints
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse updates from Miklos Szeredi:
- Allow connection to server to time out (Joanne Koong)
- If server doesn't support creating a hard link, return EPERM rather
than ENOSYS (Matt Johnston)
- Allow file names longer than 1024 chars (Bernd Schubert)
- Fix a possible race if request on io_uring queue is interrupted
(Bernd Schubert)
- Misc fixes and cleanups
* tag 'fuse-update-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: remove unneeded atomic set in uring creation
fuse: fix uring race condition for null dereference of fc
fuse: Increase FUSE_NAME_MAX to PATH_MAX
fuse: Allocate only namelen buf memory in fuse_notify_
fuse: add default_request_timeout and max_request_timeout sysctls
fuse: add kernel-enforced timeout option for requests
fuse: optmize missing FUSE_LINK support
fuse: Return EPERM rather than ENOSYS from link()
fuse: removed unused function fuse_uring_create() from header
fuse: {io-uring} Fix a possible req cancellation race
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc updates from Michael Ellerman:
- Remove the IBM CAPI (cxl) driver
Thanks to Andrew Donnellan.
* tag 'powerpc-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
docs: Fix references to IBM CAPI (cxl) removal version
cxl: Remove driver
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git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe:
"Two significant new items:
- Allow reporting IOMMU HW events to userspace when the events are
clearly linked to a device.
This is linked to the VIOMMU object and is intended to be used by a
VMM to forward HW events to the virtual machine as part of
emulating a vIOMMU. ARM SMMUv3 is the first driver to use this
mechanism. Like the existing fault events the data is delivered
through a simple FD returning event records on read().
- PASID support in VFIO.
The "Process Address Space ID" is a PCI feature that allows the
device to tag all PCI DMA operations with an ID. The IOMMU will
then use the ID to select a unique translation for those DMAs. This
is part of Intel's vIOMMU support as VT-D HW requires the
hypervisor to manage each PASID entry.
The support is generic so any VFIO user could attach any
translation to a PASID, and the support should work on ARM SMMUv3
as well. AMD requires additional driver work.
Some minor updates, along with fixes:
- Prevent using nested parents with fault's, no driver support today
- Put a single "cookie_type" value in the iommu_domain to indicate
what owns the various opaque owner fields"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (49 commits)
iommufd: Test attach before detaching pasid
iommufd: Fix iommu_vevent_header tables markup
iommu: Convert unreachable() to BUG()
iommufd: Balance veventq->num_events inc/dec
iommufd: Initialize the flags of vevent in iommufd_viommu_report_event()
iommufd/selftest: Add coverage for reporting max_pasid_log2 via IOMMU_HW_INFO
iommufd: Extend IOMMU_GET_HW_INFO to report PASID capability
vfio: VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT support pasid
vfio-iommufd: Support pasid [at|de]tach for physical VFIO devices
ida: Add ida_find_first_range()
iommufd/selftest: Add coverage for iommufd pasid attach/detach
iommufd/selftest: Add test ops to test pasid attach/detach
iommufd/selftest: Add a helper to get test device
iommufd/selftest: Add set_dev_pasid in mock iommu
iommufd: Allow allocating PASID-compatible domain
iommu/vt-d: Add IOMMU_HWPT_ALLOC_PASID support
iommufd: Enforce PASID-compatible domain for RID
iommufd: Support pasid attach/replace
iommufd: Enforce PASID-compatible domain in PASID path
iommufd/device: Add pasid_attach array to track per-PASID attach
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This merges in the removal of the IBM CAPI "cxl" driver.
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc / IIO driver updates from Greg KH:
"Here is the big set of char, misc, iio, and other smaller driver
subsystems for 6.15-rc1. Lots of stuff in here, including:
- loads of IIO changes and driver updates
- counter driver updates
- w1 driver updates
- faux conversions for some drivers that were abusing the platform
bus interface
- coresight driver updates
- rust miscdevice binding updates based on real-world-use
- other minor driver updates
All of these have been in linux-next with no reported issues for quite
a while"
* tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
samples: rust_misc_device: fix markup in top-level docs
Coresight: Fix a NULL vs IS_ERR() bug in probe
misc: lis3lv02d: convert to use faux_device
tlclk: convert to use faux_device
regulator: dummy: convert to use the faux device interface
bus: mhi: host: Fix race between unprepare and queue_buf
coresight: configfs: Constify struct config_item_type
doc: iio: ad7380: describe offload support
iio: ad7380: add support for SPI offload
iio: light: Add check for array bounds in veml6075_read_int_time_ms
iio: adc: ti-ads7924 Drop unnecessary function parameters
staging: iio: ad9834: Use devm_regulator_get_enable()
staging: iio: ad9832: Use devm_regulator_get_enable()
iio: gyro: bmg160_spi: add of_match_table
dt-bindings: iio: adc: Add i.MX94 and i.MX95 support
iio: adc: ad7768-1: remove unnecessary locking
Documentation: ABI: add wideband filter type to sysfs-bus-iio
iio: adc: ad7768-1: set MOSI idle state to prevent accidental reset
iio: adc: ad7768-1: Fix conversion result sign
iio: adc: ad7124: Benefit of dev = indio_dev->dev.parent in ad7124_parse_channel_config()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- The series "powerpc/crash: use generic crashkernel reservation" from
Sourabh Jain changes powerpc's kexec code to use more of the generic
layers.
- The series "get_maintainer: report subsystem status separately" from
Vlastimil Babka makes some long-requested improvements to the
get_maintainer output.
- The series "ucount: Simplify refcounting with rcuref_t" from
Sebastian Siewior cleans up and optimizing the refcounting in the
ucount code.
- The series "reboot: support runtime configuration of emergency
hw_protection action" from Ahmad Fatoum improves the ability for a
driver to perform an emergency system shutdown or reboot.
- The series "Converge on using secs_to_jiffies() part two" from Easwar
Hariharan performs further migrations from msecs_to_jiffies() to
secs_to_jiffies().
- The series "lib/interval_tree: add some test cases and cleanup" from
Wei Yang permits more userspace testing of kernel library code, adds
some more tests and performs some cleanups.
- The series "hung_task: Dump the blocking task stacktrace" from Masami
Hiramatsu arranges for the hung_task detector to dump the stack of
the blocking task and not just that of the blocked task.
- The series "resource: Split and use DEFINE_RES*() macros" from Andy
Shevchenko provides some cleanups to the resource definition macros.
- Plus the usual shower of singleton patches - please see the
individual changelogs for details.
* tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits)
mailmap: consolidate email addresses of Alexander Sverdlin
fs/procfs: fix the comment above proc_pid_wchan()
relay: use kasprintf() instead of fixed buffer formatting
resource: replace open coded variant of DEFINE_RES()
resource: replace open coded variants of DEFINE_RES_*_NAMED()
resource: replace open coded variant of DEFINE_RES_NAMED_DESC()
resource: split DEFINE_RES_NAMED_DESC() out of DEFINE_RES_NAMED()
samples: add hung_task detector mutex blocking sample
hung_task: show the blocker task if the task is hung on mutex
kexec_core: accept unaccepted kexec segments' destination addresses
watchdog/perf: optimize bytes copied and remove manual NUL-termination
lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap()
lib/interval_tree: skip the check before go to the right subtree
lib/interval_tree: add test case for span iteration
lib/interval_tree: add test case for interval_tree_iter_xxx() helpers
lib/rbtree: add random seed
lib/rbtree: split tests
lib/rbtree: enable userland test suite for rbtree related data structure
checkpatch: describe --min-conf-desc-length
scripts/gdb/symbols: determine KASLR offset on s390
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Pull nfsd updates from Chuck Lever:
"Neil Brown contributed more scalability improvements to NFSD's open
file cache, and Jeff Layton contributed a menagerie of repairs to
NFSD's NFSv4 callback / backchannel implementation.
Mike Snitzer contributed a change to NFS re-export support that
disables support for file locking on a re-exported NFSv4 mount. This
is because NFSv4 state recovery is currently difficult if not
impossible for re-exported NFS mounts. The change aims to prevent data
integrity exposures after the re-export server crashes.
Work continues on the evolving NFSD netlink administrative API.
Many thanks to the contributors, reviewers, testers, and bug reporters
who participated during the v6.15 development cycle"
* tag 'nfsd-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (45 commits)
NFSD: Add a Kconfig setting to enable delegated timestamps
sysctl: Fixes nsm_local_state bounds
nfsd: use a long for the count in nfsd4_state_shrinker_count()
nfsd: remove obsolete comment from nfs4_alloc_stid
nfsd: remove unneeded forward declaration of nfsd4_mark_cb_fault()
nfsd: reorganize struct nfs4_delegation for better packing
nfsd: handle errors from rpc_call_async()
nfsd: move cb_need_restart flag into cb_flags
nfsd: replace CB_GETATTR_BUSY with NFSD4_CALLBACK_RUNNING
nfsd: eliminate cl_ra_cblist and NFSD4_CLIENT_CB_RECALL_ANY
nfsd: prevent callback tasks running concurrently
nfsd: disallow file locking and delegations for NFSv4 reexport
nfsd: filecache: drop the list_lru lock during lock gc scans
nfsd: filecache: don't repeatedly add/remove files on the lru list
nfsd: filecache: introduce NFSD_FILE_RECENT
nfsd: filecache: use list_lru_walk_node() in nfsd_file_gc()
nfsd: filecache: use nfsd_file_dispose_list() in nfsd_file_close_inode_sync()
NFSD: Re-organize nfsd_file_gc_worker()
nfsd: filecache: remove race handling.
fs: nfs: acl: Avoid -Wflex-array-member-not-at-end warning
...
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There are situations where fuse servers can become unresponsive or
stuck, for example if the server is deadlocked. Currently, there's no
good way to detect if a server is stuck and needs to be killed manually.
This commit adds an option for enforcing a timeout (in seconds) for
requests where if the timeout elapses without the server responding to
the request, the connection will be automatically aborted.
Please note that these timeouts are not 100% precise. For example, the
request may take roughly an extra FUSE_TIMEOUT_TIMER_FREQ seconds beyond
the requested timeout due to internal implementation, in order to
mitigate overhead.
[SzM: Bump the API version number]
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
"For this merge window we're splitting BPF pull request into three for
higher visibility: main changes, res_spin_lock, try_alloc_pages.
These are the main BPF changes:
- Add DFA-based live registers analysis to improve verification of
programs with loops (Eduard Zingerman)
- Introduce load_acquire and store_release BPF instructions and add
x86, arm64 JIT support (Peilin Ye)
- Fix loop detection logic in the verifier (Eduard Zingerman)
- Drop unnecesary lock in bpf_map_inc_not_zero() (Eric Dumazet)
- Add kfunc for populating cpumask bits (Emil Tsalapatis)
- Convert various shell based tests to selftests/bpf/test_progs
format (Bastien Curutchet)
- Allow passing referenced kptrs into struct_ops callbacks (Amery
Hung)
- Add a flag to LSM bpf hook to facilitate bpf program signing
(Blaise Boscaccy)
- Track arena arguments in kfuncs (Ihor Solodrai)
- Add copy_remote_vm_str() helper for reading strings from remote VM
and bpf_copy_from_user_task_str() kfunc (Jordan Rome)
- Add support for timed may_goto instruction (Kumar Kartikeya
Dwivedi)
- Allow bpf_get_netns_cookie() int cgroup_skb programs (Mahe Tardy)
- Reduce bpf_cgrp_storage_busy false positives when accessing cgroup
local storage (Martin KaFai Lau)
- Introduce bpf_dynptr_copy() kfunc (Mykyta Yatsenko)
- Allow retrieving BTF data with BTF token (Mykyta Yatsenko)
- Add BPF kfuncs to set and get xattrs with 'security.bpf.' prefix
(Song Liu)
- Reject attaching programs to noreturn functions (Yafang Shao)
- Introduce pre-order traversal of cgroup bpf programs (Yonghong
Song)"
* tag 'bpf-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (186 commits)
selftests/bpf: Add selftests for load-acquire/store-release when register number is invalid
bpf: Fix out-of-bounds read in check_atomic_load/store()
libbpf: Add namespace for errstr making it libbpf_errstr
bpf: Add struct_ops context information to struct bpf_prog_aux
selftests/bpf: Sanitize pointer prior fclose()
selftests/bpf: Migrate test_xdp_vlan.sh into test_progs
selftests/bpf: test_xdp_vlan: Rename BPF sections
bpf: clarify a misleading verifier error message
selftests/bpf: Add selftest for attaching fexit to __noreturn functions
bpf: Reject attaching fexit/fmod_ret to __noreturn functions
bpf: Only fails the busy counter check in bpf_cgrp_storage_get if it creates storage
bpf: Make perf_event_read_output accessible in all program types.
bpftool: Using the right format specifiers
bpftool: Add -Wformat-signedness flag to detect format errors
selftests/bpf: Test freplace from user namespace
libbpf: Pass BPF token from find_prog_btf_id to BPF_BTF_GET_FD_BY_ID
bpf: Return prog btf_id without capable check
bpf: BPF token support for BPF_BTF_GET_FD_BY_ID
bpf, x86: Fix objtool warning for timed may_goto
bpf: Check map->record at the beginning of check_and_free_fields()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Vasily Gorbik:
- Add sorting of mcount locations at build time
- Rework uaccess functions with C exception handling to shorten inline
assembly size and enable full inlining. This yields near-optimal code
for small constant copies with a ~40kb kernel size increase
- Add support for a configurable STRICT_MM_TYPECHECKS which allows to
generate better code, but also allows to have type checking for debug
builds
- Optimize get_lowcore() for common callers with alternatives that
nearly revert to the pre-relocated lowcore code, while also slightly
reducing syscall entry and exit time
- Convert MACHINE_HAS_* checks for single facility tests into cpu_has_*
style macros that call test_facility(), and for features with
additional conditions, add a new ALT_TYPE_FEATURE alternative to
provide a static branch via alternative patching. Also, move machine
feature detection to the decompressor for early patching and add
debugging functionality to easily show which alternatives are patched
- Add exception table support to early boot / startup code to get rid
of the open coded exception handling
- Use asm_inline for all inline assemblies with EX_TABLE or ALTERNATIVE
to ensure correct inlining and unrolling decisions
- Remove 2k page table leftovers now that s390 has been switched to
always allocate 4k page tables
- Split kfence pool into 4k mappings in arch_kfence_init_pool() and
remove the architecture-specific kfence_split_mapping()
- Use READ_ONCE_NOCHECK() in regs_get_kernel_stack_nth() to silence
spurious KASAN warnings from opportunistic ftrace argument tracing
- Force __atomic_add_const() variants on s390 to always return void,
ensuring compile errors for improper usage
- Remove s390's ioremap_wt() and pgprot_writethrough() due to
mismatched semantics and lack of known users, relying on asm-generic
fallbacks
- Signal eventfd in vfio-ap to notify userspace when the guest AP
configuration changes, including during mdev removal
- Convert mdev_types from an array to a pointer in vfio-ccw and vfio-ap
drivers to avoid fake flex array confusion
- Cleanup trap code
- Remove references to the outdated linux390@de.ibm.com address
- Other various small fixes and improvements all over the code
* tag 's390-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (78 commits)
s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies
s390/kfence: Split kfence pool into 4k mappings in arch_kfence_init_pool()
s390/ptrace: Avoid KASAN false positives in regs_get_kernel_stack_nth()
s390/boot: Ignore vmlinux.map
s390/sysctl: Remove "vm/allocate_pgste" sysctl
s390: Remove 2k vs 4k page table leftovers
s390/tlb: Use mm_has_pgste() instead of mm_alloc_pgste()
s390/lowcore: Use lghi instead llilh to clear register
s390/syscall: Merge __do_syscall() and do_syscall()
s390/spinlock: Implement SPINLOCK_LOCKVAL with inline assembly
s390/smp: Implement raw_smp_processor_id() with inline assembly
s390/current: Implement current with inline assembly
s390/lowcore: Use inline qualifier for get_lowcore() inline assembly
s390: Move s390 sysctls into their own file under arch/s390
s390/syscall: Simplify syscall_get_arguments()
s390/vfio-ap: Notify userspace that guest's AP config changed when mdev removed
s390: Remove ioremap_wt() and pgprot_writethrough()
s390/mm: Add configurable STRICT_MM_TYPECHECKS
s390/mm: Convert pgste_val() into function
s390/mm: Convert pgprot_val() into function
...
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Pull rdma updates from Jason Gunthorpe:
- Usual minor updates and fixes for bnxt_re, hfi1, rxe, mana, iser,
mlx5, vmw_pvrdma, hns
- Make rxe work on tun devices
- mana gains more standard verbs as it moves toward supporting
in-kernel verbs
- DMABUF support for mana
- Fix page size calculations when memory registration exceeds 4G
- On Demand Paging support for rxe
- mlx5 support for RDMA TRANSPORT flow tables and a new ucap mechanism
to access control use of them
- Optional RDMA_TX/RX counters per QP in mlx5
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (73 commits)
IB/mad: Check available slots before posting receive WRs
RDMA/mana_ib: Fix integer overflow during queue creation
RDMA/mlx5: Fix calculation of total invalidated pages
RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow
RDMA/mlx5: Fix page_size variable overflow
RDMA/mlx5: Drop access_flags from _mlx5_mr_cache_alloc()
RDMA/mlx5: Fix cache entry update on dereg error
RDMA/mlx5: Fix MR cache initialization error flow
RDMA/mlx5: Support optional-counters binding for QPs
RDMA/mlx5: Compile fs.c regardless of INFINIBAND_USER_ACCESS config
RDMA/core: Pass port to counter bind/unbind operations
RDMA/core: Add support to optional-counters binding configuration
RDMA/core: Create and destroy rdma_counter using rdma_zalloc_drv_obj()
RDMA/mlx5: Add optional counters for RDMA_TX/RX_packets/bytes
RDMA/core: Fix use-after-free when rename device name
RDMA/bnxt_re: Support perf management counters
RDMA/rxe: Fix incorrect return value of rxe_odp_atomic_op()
RDMA/uverbs: Propagate errors from rdma_lookup_get_uobject()
RDMA/mana_ib: Handle net event for pointing to the current netdev
net: mana: Change the function signature of mana_get_primary_netdev_rcu
...
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git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull fwctl subsystem from Jason Gunthorpe:
"fwctl is a new subsystem intended to bring some common rules and order
to the growing pattern of exposing a secure FW interface directly to
userspace.
Unlike existing places like RDMA/DRM/VFIO/uacce that are exposing a
device for datapath operations fwctl is focused on debugging,
configuration and provisioning of the device. It will not have the
necessary features like interrupt delivery to support a datapath.
This concept is similar to the long standing practice in the "HW" RAID
space of having a device specific misc device to manage the RAID
controller FW. fwctl generalizes this notion of a companion debug and
management interface that goes along with a dataplane implemented in
an appropriate subsystem.
There have been three LWN articles written discussing various aspects
of this:
https://lwn.net/Articles/955001/
https://lwn.net/Articles/969383/
https://lwn.net/Articles/990802/
This includes three drivers to launch the subsystem:
- CXL provides a vendor scheme for executing commands and a way to
learn the 'command effects' (ie the security properties) of such
commands. The fwctl driver allows access to these mechanism within
the fwctl security model
- mlx5 is family of networking products, the driver supports all
current Mellanox HW still receiving FW feature updates. This
includes RDMA multiprotocol NICs like ConnectX and the Bluefield
family of Smart NICs.
- AMD/Pensando Distributed Services card is a multi protocol Smart
NIC with a multi PCI function design. fwctl works on the management
PCI function following a 'command effects' model similar to CXL"
* tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (30 commits)
pds_fwctl: add Documentation entries
pds_fwctl: add rpc and query support
pds_fwctl: initial driver framework
pds_core: add new fwctl auxiliary_device
pds_core: specify auxiliary_device to be created
pds_core: make pdsc_auxbus_dev_del() void
cxl: Fixup kdoc issues for include/cxl/features.h
fwctl/cxl: Add documentation to FWCTL CXL
cxl/test: Add Set Feature support to cxl_test
cxl/test: Add Get Feature support to cxl_test
cxl: Add support to handle user feature commands for set feature
cxl: Add support to handle user feature commands for get feature
cxl: Add support for fwctl RPC command to enable CXL feature commands
cxl: Move cxl feature command structs to user header
cxl: Add FWCTL support to CXL
mlx5: Create an auxiliary device for fwctl_mlx5
fwctl/mlx5: Support for communicating with mlx5 fw
fwctl: Add documentation
fwctl: FWCTL_RPC to execute a Remote Procedure Call to device firmware
taint: Add TAINT_FWCTL
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Remove legacy compression interface
- Improve scatterwalk API
- Add request chaining to ahash and acomp
- Add virtual address support to ahash and acomp
- Add folio support to acomp
- Remove NULL dst support from acomp
Algorithms:
- Library options are fuly hidden (selected by kernel users only)
- Add Kerberos5 algorithms
- Add VAES-based ctr(aes) on x86
- Ensure LZO respects output buffer length on compression
- Remove obsolete SIMD fallback code path from arm/ghash-ce
Drivers:
- Add support for PCI device 0x1134 in ccp
- Add support for rk3588's standalone TRNG in rockchip
- Add Inside Secure SafeXcel EIP-93 crypto engine support in eip93
- Fix bugs in tegra uncovered by multi-threaded self-test
- Fix corner cases in hisilicon/sec2
Others:
- Add SG_MITER_LOCAL to sg miter
- Convert ubifs, hibernate and xfrm_ipcomp from legacy API to acomp"
* tag 'v6.15-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (187 commits)
crypto: testmgr - Add multibuffer acomp testing
crypto: acomp - Fix synchronous acomp chaining fallback
crypto: testmgr - Add multibuffer hash testing
crypto: hash - Fix synchronous ahash chaining fallback
crypto: arm/ghash-ce - Remove SIMD fallback code path
crypto: essiv - Replace memcpy() + NUL-termination with strscpy()
crypto: api - Call crypto_alg_put in crypto_unregister_alg
crypto: scompress - Fix incorrect stream freeing
crypto: lib/chacha - remove unused arch-specific init support
crypto: remove obsolete 'comp' compression API
crypto: compress_null - drop obsolete 'comp' implementation
crypto: cavium/zip - drop obsolete 'comp' implementation
crypto: zstd - drop obsolete 'comp' implementation
crypto: lzo - drop obsolete 'comp' implementation
crypto: lzo-rle - drop obsolete 'comp' implementation
crypto: lz4hc - drop obsolete 'comp' implementation
crypto: lz4 - drop obsolete 'comp' implementation
crypto: deflate - drop obsolete 'comp' implementation
crypto: 842 - drop obsolete 'comp' implementation
crypto: nx - Migrate to scomp API
...
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Enable Configuration RRS SV, which makes device readiness visible,
early instead of during child bus scanning (Bjorn Helgaas)
- Log debug messages about reset methods being used (Bjorn Helgaas)
- Avoid reset when it has been disabled via sysfs (Nishanth
Aravamudan)
- Add common pci-ep-bus.yaml schema for exporting several peripherals
of a single PCI function via devicetree (Andrea della Porta)
- Create DT nodes for PCI host bridges to enable loading device tree
overlays to create platform devices for PCI devices that have
several features that require multiple drivers (Herve Codina)
Resource management:
- Enlarge devres table[] to accommodate bridge windows, ROM, IOV
BARs, etc., and validate BAR index in devres interfaces (Philipp
Stanner)
- Fix typo that repeatedly distributed resources to a bridge instead
of iterating over subordinate bridges, which resulted in too little
space to assign some BARs (Kai-Heng Feng)
- Relax bridge window tail sizing for optional resources, e.g., IOV
BARs, to avoid failures when removing and re-adding devices (Ilpo
Järvinen)
- Allow drivers to enable devices even if we haven't assigned
optional IOV resources to them (Ilpo Järvinen)
- Rework handling of optional resources (IOV BARs, ROMs) to reduce
failures if we can't allocate them (Ilpo Järvinen)
- Fix a NULL dereference in the SR-IOV VF creation error path (Shay
Drory)
- Fix s390 mmio_read/write syscalls, which didn't cause page faults
in some cases, which broke vfio-pci lazy mapping on first access
(Niklas Schnelle)
- Add pdev->non_mappable_bars to replace CONFIG_VFIO_PCI_MMAP, which
was disabled only for s390 (Niklas Schnelle)
- Support mmap of PCI resources on s390 except for ISM devices
(Niklas Schnelle)
ASPM:
- Delay pcie_link_state deallocation to avoid dangling pointers that
cause invalid references during hot-unplug (Daniel Stodden)
Power management:
- Allow PCI bridges to go to D3Hot when suspending on all non-x86
systems (Manivannan Sadhasivam)
Power control:
- Create pwrctrl devices in pci_scan_device() to make it more
symmetric with pci_pwrctrl_unregister() and make pwrctrl devices
for PCI bridges possible (Manivannan Sadhasivam)
- Unregister pwrctrl devices in pci_destroy_dev() so DOE, ASPM, etc.
can still access devices after pci_stop_dev() (Manivannan
Sadhasivam)
- If there's a pwrctrl device for a PCI device, skip scanning it
because the pwrctrl core will rescan the bus after the device is
powered on (Manivannan Sadhasivam)
- Add a pwrctrl driver for PCI slots based on voltage regulators
described via devicetree (Manivannan Sadhasivam)
Bandwidth control:
- Add set_pcie_speed.sh to TEST_PROGS to fix issue when executing the
set_pcie_cooling_state.sh test case (Yi Lai)
- Avoid a NULL pointer dereference when we run out of bus numbers to
assign for a bridge secondary bus (Lukas Wunner)
Hotplug:
- Drop superfluous pci_hotplug_slot_list, try_module_get() calls, and
NULL pointer checks (Lukas Wunner)
- Drop shpchp module init/exit logging, replace shpchp dbg() with
ctrl_dbg(), and remove unused dbg(), err(), info(), warn() wrappers
(Ilpo Järvinen)
- Drop 'shpchp_debug' module parameter in favor of standard dynamic
debugging (Ilpo Järvinen)
- Drop unused cpcihp .get_power(), .set_power() function pointers
(Guilherme Giacomo Simoes)
- Disable hotplug interrupts in portdrv only when pciehp is not
enabled to avoid issuing two hotplug commands too close together
(Feng Tang)
- Skip pciehp 'device replaced' check if the device has been removed
to address a deadlock when resuming after a device was removed
during system sleep (Lukas Wunner)
- Don't enable pciehp hotplug interupt when resuming in poll mode
(Ilpo Järvinen)
Virtualization:
- Fix bugs in 'pci=config_acs=' kernel command line parameter (Tushar
Dave)
DOE:
- Expose supported DOE features via sysfs (Alistair Francis)
- Allow DOE support to be enabled even if CXL isn't enabled (Alistair
Francis)
Endpoint framework:
- Convert PCI device data so pci-epf-test works correctly on
big-endian endpoint systems (Niklas Cassel)
- Add BAR_RESIZABLE type to endpoint framework and add DWC core
support for EPF drivers to set BAR_RESIZABLE type and size (Niklas
Cassel)
- Fix pci-epf-test double free that causes an oops if the host
reboots and PERST# deassertion restarts endpoint BAR allocation
(Christian Bruel)
- Fix endpoint BAR testing so tests can skip disabled BARs instead of
reporting them as failures (Niklas Cassel)
- Widen endpoint test BAR size variable to accommodate BARs larger
than INT_MAX (Niklas Cassel)
- Remove unused tools 'pci' build target left over after moving tests
to tools/testing/selftests/pci_endpoint (Jianfeng Liu)
Altera PCIe controller driver:
- Add DT binding and driver support for Agilex family (P-Tile,
F-Tile, R-Tile) (Matthew Gerlach and D M, Sharath Kumar)
AMD MDB PCIe controller driver:
- Add DT binding and driver for AMD MDB (Multimedia DMA Bridge)
(Thippeswamy Havalige)
Broadcom STB PCIe controller driver:
- Add BCM2712 MSI-X DT binding and interrupt controller drivers and
add softdep on irq_bcm2712_mip driver to ensure that it is loaded
first (Stanimir Varbanov)
- Expand inbound window map to 64GB so it can accommodate BCM2712
(Stanimir Varbanov)
- Add BCM2712 support and DT updates (Stanimir Varbanov)
- Apply link speed restriction before bringing link up, not after
(Jim Quinlan)
- Update Max Link Speed in Link Capabilities via the internal
writable register, not the read-only config register (Jim Quinlan)
- Handle regulator_bulk_get() error to avoid panic when we call
regulator_bulk_free() later (Jim Quinlan)
- Disable regulators only when removing the bus immediately below a
Root Port because we don't support regulators deeper in the
hierarchy (Jim Quinlan)
- Make const read-only arrays static (Colin Ian King)
Cadence PCIe endpoint driver:
- Correct MSG TLP generation so endpoints can generate INTx messages
(Hans Zhang)
Freescale i.MX6 PCIe controller driver:
- Identify the second controller on i.MX8MQ based on devicetree
'linux,pci-domain' instead of DBI 'reg' address (Richard Zhu)
- Remove imx_pcie_cpu_addr_fixup() since dwc core can now derive the
ATU input address (using parent_bus_offset) from devicetree (Frank
Li)
Freescale Layerscape PCIe controller driver:
- Drop deprecated 'num-ib-windows' and 'num-ob-windows' and
unnecessary 'status' from example (Krzysztof Kozlowski)
- Correct the syscon_regmap_lookup_by_phandle_args("fsl,pcie-scfg")
arg_count to fix probe failure on LS1043A (Ioana Ciornei)
HiSilicon STB PCIe controller driver:
- Call phy_exit() to clean up if histb_pcie_probe() fails (Christophe
JAILLET)
Intel Gateway PCIe controller driver:
- Remove intel_pcie_cpu_addr() since dwc core can now derive the ATU
input address (using parent_bus_offset) from devicetree (Frank Li)
Intel VMD host bridge driver:
- Convert vmd_dev.cfg_lock from spinlock_t to raw_spinlock_t so
pci_ops.read() will never sleep, even on PREEMPT_RT where
spinlock_t becomes a sleepable lock, to avoid calling a sleeping
function from invalid context (Ryo Takakura)
MediaTek PCIe Gen3 controller driver:
- Remove leftover mac_reset assert for Airoha EN7581 SoC (Lorenzo
Bianconi)
- Add EN7581 PBUS controller 'mediatek,pbus-csr' DT property and
program host bridge memory aperture to this syscon node (Lorenzo
Bianconi)
Qualcomm PCIe controller driver:
- Add qcom,pcie-ipq5332 binding (Varadarajan Narayanan)
- Add qcom i.MX8QM and i.MX8QXP/DXP optional DMA interrupt (Alexander
Stein)
- Add optional dma-coherent DT property for Qualcomm SA8775P (Dmitry
Baryshkov)
- Make DT iommu property required for SA8775P and prohibited for
SDX55 (Dmitry Baryshkov)
- Add DT IOMMU and DMA-related properties for Qualcomm SM8450 (Dmitry
Baryshkov)
- Add endpoint DT properties for SAR2130P and enable endpoint mode in
driver (Dmitry Baryshkov)
- Describe endpoint BAR0 and BAR2 as 64-bit only and BAR1 and BAR3 as
RESERVED (Manivannan Sadhasivam)
Rockchip DesignWare PCIe controller driver:
- Describe rk3568 and rk3588 BARs as Resizable, not Fixed (Niklas
Cassel)
Synopsys DesignWare PCIe controller driver:
- Add debugfs-based Silicon Debug, Error Injection, Statistical
Counter support for DWC (Shradha Todi)
- Add debugfs property to expose LTSSM status of DWC PCIe link (Hans
Zhang)
- Add Rockchip support for DWC debugfs features (Niklas Cassel)
- Add dw_pcie_parent_bus_offset() to look up the parent bus address
of a specified 'reg' property and return the offset from the CPU
physical address (Frank Li)
- Use dw_pcie_parent_bus_offset() to derive CPU -> ATU addr offset
via 'reg[config]' for host controllers and 'reg[addr_space]' for
endpoint controllers (Frank Li)
- Apply struct dw_pcie.parent_bus_offset in ATU users to remove use
of .cpu_addr_fixup() when programming ATU (Frank Li)
TI J721E PCIe driver:
- Correct the 'link down' interrupt bit for J784S4 (Siddharth
Vadapalli)
TI Keystone PCIe controller driver:
- Describe AM65x BARs 2 and 5 as Resizable (not Fixed) and reduce
alignment requirement from 1MB to 64KB (Niklas Cassel)
Xilinx Versal CPM PCIe controller driver:
- Free IRQ domain in probe error path to avoid leaking it
(Thippeswamy Havalige)
- Add DT .compatible "xlnx,versal-cpm5nc-host" and driver support for
Versal Net CPM5NC Root Port controller (Thippeswamy Havalige)
- Add driver support for CPM5_HOST1 (Thippeswamy Havalige)
Miscellaneous:
- Convert fsl,mpc83xx-pcie binding to YAML (J. Neuschäfer)
- Use for_each_available_child_of_node_scoped() to simplify apple,
kirin, mediatek, mt7621, tegra drivers (Zhang Zekun)"
* tag 'pci-v6.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (197 commits)
PCI: layerscape: Fix arg_count to syscon_regmap_lookup_by_phandle_args()
PCI: j721e: Fix the value of .linkdown_irq_regfield for J784S4
misc: pci_endpoint_test: Add support for PCITEST_IRQ_TYPE_AUTO
PCI: endpoint: pci-epf-test: Expose supported IRQ types in CAPS register
PCI: dw-rockchip: Endpoint mode cannot raise INTx interrupts
PCI: endpoint: Add intx_capable to epc_features struct
dt-bindings: PCI: Add common schema for devices accessible through PCI BARs
PCI: intel-gw: Remove intel_pcie_cpu_addr()
PCI: imx6: Remove imx_pcie_cpu_addr_fixup()
PCI: dwc: Use parent_bus_offset to remove need for .cpu_addr_fixup()
PCI: dwc: ep: Ensure proper iteration over outbound map windows
PCI: dwc: ep: Use devicetree 'reg[addr_space]' to derive CPU -> ATU addr offset
PCI: dwc: ep: Consolidate devicetree handling in dw_pcie_ep_get_resources()
PCI: dwc: ep: Call epc_create() early in dw_pcie_ep_init()
PCI: dwc: Use devicetree 'reg[config]' to derive CPU -> ATU addr offset
PCI: dwc: Add dw_pcie_parent_bus_offset() checking and debug
PCI: dwc: Add dw_pcie_parent_bus_offset()
PCI/bwctrl: Fix NULL pointer dereference on bus number exhaustion
PCI: xilinx-cpm: Add cpm_csr register mapping for CPM5_HOST1 variant
PCI: brcmstb: Make const read-only arrays static
...
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|
Pull drm updates from Dave Airlie:
"Outside of drm there are some rust patches from Danilo who maintains
that area in here, and some pieces for drm header check tests.
The major things in here are a new driver supporting the touchbar
displays on M1/M2, the nova-core stub driver which is just the vehicle
for adding rust abstractions and start developing a real driver inside
of.
xe adds support for SVM with a non-driver specific SVM core
abstraction that will hopefully be useful for other drivers, along
with support for shrinking for TTM devices. I'm sure xe and AMD
support new devices, but the pipeline depth on these things is hard to
know what they end up being in the marketplace!
uapi:
- add mediatek tiled fourcc
- add support for notifying userspace on device wedged
new driver:
- appletbdrm: support for Apple Touchbar displays on m1/m2
- nova-core: skeleton rust driver to develop nova inside off
firmware:
- add some rust firmware pieces
rust:
- add 'LocalModule' type alias
component:
- add helper to query bound status
fbdev:
- fbtft: remove access to page->index
media:
- cec: tda998x: import driver from drm
dma-buf:
- add fast path for single fence merging
tests:
- fix lockdep warnings
atomic:
- allow full modeset on connector changes
- clarify semantics of allow_modeset and drm_atomic_helper_check
- async-flip: support on arbitary planes
- writeback: fix UAF
- Document atomic-state history
format-helper:
- support ARGB8888 to ARGB4444 conversions
buddy:
- fix multi-root cleanup
ci:
- update IGT
dp:
- support extended wake timeout
- mst: fix RAD to string conversion
- increase DPCD eDP control CAP size to 5 bytes
- add DPCD eDP v1.5 definition
- add helpers for LTTPR transparent mode
panic:
- encode QR code according to Fido 2.2
scheduler:
- add parameter struct for init
- improve job peek/pop operations
- optimise drm_sched_job struct layout
ttm:
- refactor pool allocation
- add helpers for TTM shrinker
panel-orientation:
- add a bunch of new quirks
panel:
- convert panels to multi-style functions
- edp: Add support for B140UAN04.4, BOE NV140FHM-NZ, CSW MNB601LS1-3,
LG LP079QX1-SP0V, MNE007QS3-7, STA 116QHD024002, Starry
116KHD024006, Lenovo T14s Gen6 Snapdragon
- himax-hx83102: Add support for CSOT PNA957QT1-1, Kingdisplay
kd110n11-51ie, Starry 2082109qfh040022-50e
- visionox-r66451: use multi-style MIPI-DSI functions
- raydium-rm67200: Add driver for Raydium RM67200
- simple: Add support for BOE AV123Z7M-N17, BOE AV123Z7M-N17
- sony-td4353-jdi: Use MIPI-DSI multi-func interface
- summit: Add driver for Apple Summit display panel
- visionox-rm692e5: Add driver for Visionox RM692E5
bridge:
- pass full atomic state to various callbacks
- adv7511: Report correct capabilities
- it6505: Fix HDCP V compare
- snd65dsi86: fix device IDs
- nwl-dsi: set bridge type
- ti-sn65si83: add error recovery and set bridge type
- synopsys: add HDMI audio support
xe:
- support device-wedged event
- add mmap support for PCI memory barrier
- perf pmu integration and expose per-engien activity
- add EU stall sampling support
- GPU SVM and Xe SVM implementation
- use TTM shrinker
- add survivability mode to allow the driver to do firmware updates
in critical failure states
- PXP HWDRM support for MTL and LNL
- expose package/vram temps over hwmon
- enable DP tunneling
- drop mmio_ext abstraction
- Reject BO evcition if BO is bound to current VM
- Xe suballocator improvements
- re-use display vmas when possible
- add GuC Buffer Cache abstraction
- PCI ID update for Panther Lake and Battlemage
- Enable SRIOV for Panther Lake
- Refactor VRAM manager location
i915:
- enable extends wake timeout
- support device-wedged event
- Enable DP 128b/132b SST DSC
- FBC dirty rectangle support for display version 30+
- convert i915/xe to drm client setup
- Compute HDMI PLLS for rates not in fixed tables
- Allow DSB usage when PSR is enabled on LNL+
- Enable panel replay without full modeset
- Enable async flips with compressed buffers on ICL+
- support luminance based brightness via DPCD for eDP
- enable VRR enable/disable without full modeset
- allow GuC SLPC default strategies on MTL+ for performance
- lots of display refactoring in move to struct intel_display
amdgpu:
- add device wedged event
- support async page flips on overlay planes
- enable broadcast RGB drm property
- add info ioctl for virt mode
- OEM i2c support for RGB lights
- GC 11.5.2 + 11.5.3 support
- SDMA 6.1.3 support
- NBIO 7.9.1 + 7.11.2 support
- MMHUB 1.8.1 + 3.3.2 support
- DCN 3.6.0 support
- Add dynamic workload profile switching for GC 10-12
- support larger VBIOS sizes
- Mark gttsize parameters as deprecated
- Initial JPEG queue resset support
amdkfd:
- add KFD per process flags for setting precision
- sync pasid values between KGD and KFD
- improve GTT/VRAM handling for APUs
- fix user queue validation on GC7/8
- SDMA queue reset support
raedeon:
- rs400 hyperz fix
i2c:
- td998x: drop platform_data, split driver into media and bridge
ast:
- transmitter chip detection refactoring
- vbios display mode refactoring
- astdp: fix connection status and filter unsupported modes
- cursor handling refactoring
imagination:
- check job dependencies with sched helper
ivpu:
- improve command queue handling
- use workqueue for IRQ handling
- add support HW fault injection
- locking fixes
mgag200:
- add support for G200eH5
msm:
- dpu: add concurrent writeback support for DPU 10.x+
- use LTTPR helpers
- GPU:
- Fix obscure GMU suspend failure
- Expose syncobj timeline support
- Extend GPU devcoredump with pagetable info
- a623 support
- Fix a6xx gen1/gen2 indexed-register blocks in gpu snapshot /
devcoredump
- Display:
- Add cpu-cfg interconnect paths on SM8560 and SM8650
- Introduce KMS OMMU fault handler, causing devcoredump snapshot
- Fixed error pointer dereference in msm_kms_init_aspace()
- DPU:
- Fix mode_changing handling
- Add writeback support on SM6150 (QCS615)
- Fix DSC programming in 1:1:1 topology
- Reworked hardware resource allocation, moving it to the CRTC code
- Enabled support for Concurrent WriteBack (CWB) on SM8650
- Enabled CDM blocks on all relevant platforms
- Reworked debugfs interface for BW/clocks debugging
- Clear perf params before calculating bw
- Support YUV formats on writeback
- Fixed double inclusion
- Fixed writeback in YUV formats when using cloned output, Dropped
wb2_formats_rgb
- Corrected dpu_crtc_check_mode_changed and struct dpu_encoder_virt
kerneldocs
- Fixed uninitialized variable in dpu_crtc_kickoff_clone_mode()
- DSI:
- DSC-related fixes
- Rework clock programming
- DSI PHY:
- Fix 7nm (and lower) PHY programming
- Add proper DT schema definitions for DSI PHY clocks
- HDMI:
- Rework the driver, enabling the use of the HDMI Connector
framework
- Bindings:
- Added eDP PHY on SA8775P
nouveau:
- move drm_slave_encoder interface into driver
- nvkm: refactor GSP RPC
- use LTTPR helpers
mediatek:
- HDMI fixup and refinement
- add MT8188 dsc compatible
- MT8365 SoC support
panthor:
- Expose sizes of intenral BOs via fdinfo
- Fix race between reset and suspend
- Improve locking
qaic:
- Add support for AIC200
renesas:
- Fix limits in DT bindings
rockchip:
- support rk3562-mali
- rk3576: Add HDMI support
- vop2: Add new display modes on RK3588 HDMI0 up to 4K
- Don't change HDMI reference clock rate
- Fix DT bindings
- analogix_dp: add eDP support
- fix shutodnw
solomon:
- Set SPI device table to silence warnings
- Fix pixel and scanline encoding
v3d:
- handle clock
vc4:
- Use drm_exec
- Use dma-resv for wait-BO ioctl
- Remove seqno infrastructure
virtgpu:
- Support partial mappings of GEM objects
- Reserve VGA resources during initialization
- Fix UAF in virtgpu_dma_buf_free_obj()
- Add panic support
vkms:
- Switch to a managed modesetting pipeline
- Add support for ARGB8888
- fix UAf
xlnx:
- Set correct DMA segment size
- use mutex guards
- Fix error handling
- Fix docs"
* tag 'drm-next-2025-03-28' of https://gitlab.freedesktop.org/drm/kernel: (1762 commits)
drm/amd/pm: Update feature list for smu_v13_0_6
drm/amdgpu: Add parameter documentation for amdgpu_sync_fence
drm/amdgpu/discovery: optionally use fw based ip discovery
drm/amdgpu/discovery: use specific ip_discovery.bin for legacy asics
drm/amdgpu/discovery: check ip_discovery fw file available
drm/amd/pm: Remove unnecessay UQ10 to UINT conversion
drm/amd/pm: Remove unnecessay UQ10 to UINT conversion
drm/amdgpu/sdma_v4_4_2: update VM flush implementation for SDMA
drm/amdgpu: Optimize VM invalidation engine allocation and synchronize GPU TLB flush
drm/amd/amdgpu: Increase max rings to enable SDMA page ring
drm/amdgpu: Decode deferred error type in gfx aca bank parser
drm/amdgpu/gfx11: Add Cleaner Shader Support for GFX11.5 GPUs
drm/amdgpu/mes: clean up SDMA HQD loop
drm/amdgpu/mes: enable compute pipes across all MEC
drm/amdgpu/mes: drop MES 10.x leftovers
drm/amdgpu/mes: optimize compute loop handling
drm/amdgpu/sdma: guilty tracking is per instance
drm/amdgpu/sdma: fix engine reset handling
drm/amdgpu: remove invalid usage of sched.ready
drm/amdgpu: add cleaner shader trace point
...
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|
IO split is usually bad in io_uring world, since -EAGAIN is caused and
IO handling may have to fallback to io-wq, this way does hurt performance.
ublk starts to support zero copy recently, for avoiding unnecessary IO
split, ublk driver's segment limit should be aligned with backend
device's segment limit.
Another reason is that io_buffer_register_bvec() needs to allocate bvecs,
which number is aligned with ublk request segment number, so that big
memory allocation can be avoided by setting reasonable max_segments limit.
So add segment parameter for providing ublk server chance to align
segment limit with backend, and keep it reasonable from implementation
viewpoint.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20250327095123.179113-7-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
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Pull more io_uring updates from Jens Axboe:
"Final separate updates for io_uring.
This started out as a series of cleanups improvements and improvements
for registered buffers, but as the last series of the io_uring changes
for 6.15, it also collected a few fixes for the other branches on top:
- Add support for vectored fixed/registered buffers.
Previously only single segments have been supported for commands,
now vectored variants are supported as well. This series includes
networking and file read/write support.
- Small series unifying return codes across multi and single shot.
- Small series cleaning up registerd buffer importing.
- Adding support for vectored registered buffers for uring_cmd.
- Fix for io-wq handling of command reissue.
- Various little fixes and tweaks"
* tag 'for-6.15/io_uring-reg-vec-20250327' of git://git.kernel.dk/linux: (25 commits)
io_uring/net: fix io_req_post_cqe abuse by send bundle
io_uring/net: use REQ_F_IMPORT_BUFFER for send_zc
io_uring: move min_events sanitisation
io_uring: rename "min" arg in io_iopoll_check()
io_uring: open code __io_post_aux_cqe()
io_uring: defer iowq cqe overflow via task_work
io_uring: fix retry handling off iowq
io_uring/net: only import send_zc buffer once
io_uring/cmd: introduce io_uring_cmd_import_fixed_vec
io_uring/cmd: add iovec cache for commands
io_uring/cmd: don't expose entire cmd async data
io_uring: rename the data cmd cache
io_uring: rely on io_prep_reg_vec for iovec placement
io_uring: introduce io_prep_reg_iovec()
io_uring: unify STOP_MULTISHOT with IOU_OK
io_uring: return -EAGAIN to continue multishot
io_uring: cap cached iovec/bvec size
io_uring/net: implement vectored reg bufs for zctx
io_uring/net: convert to struct iou_vec
io_uring/net: pull vec alloc out of msghdr import
...
|
|
Pull io_uring epoll support from Jens Axboe:
"This adds support for reading epoll events via io_uring.
While this may seem counter-intuitive (and/or productive), the
reasoning here is that quite a few existing epoll event loops can
easily do a partial conversion to a completion based model, but are
still stuck with one (or few) event types that remain readiness based.
For that case, they then need to add the io_uring fd to the epoll
context, and continue to rely on epoll_wait(2) for waiting on events.
This misses out on the finer grained waiting that io_uring can do, to
reduce context switches and wait for multiple events in one batch
reliably.
With adding support for reaping epoll events via io_uring, the whole
legacy readiness based event types can still be reaped via epoll, with
the overall waiting in the loop be driven by io_uring"
* tag 'for-6.15/io_uring-epoll-wait-20250325' of git://git.kernel.dk/linux:
io_uring/epoll: add support for IORING_OP_EPOLL_WAIT
io_uring/epoll: remove CONFIG_EPOLL guards
|
|
Pull io_uring zero-copy receive support from Jens Axboe:
"This adds support for zero-copy receive with io_uring, enabling fast
bulk receive of data directly into application memory, rather than
needing to copy the data out of kernel memory.
While this version only supports host memory as that was the initial
target, other memory types are planned as well, with notably GPU
memory coming next.
This work depends on some networking components which were queued up
on the networking side, but have now landed in your tree.
This is the work of Pavel Begunkov and David Wei. From the v14 posting:
'We configure a page pool that a driver uses to fill a hw rx queue
to hand out user pages instead of kernel pages. Any data that ends
up hitting this hw rx queue will thus be dma'd into userspace
memory directly, without needing to be bounced through kernel
memory. 'Reading' data out of a socket instead becomes a
_notification_ mechanism, where the kernel tells userspace where
the data is. The overall approach is similar to the devmem TCP
proposal
This relies on hw header/data split, flow steering and RSS to
ensure packet headers remain in kernel memory and only desired
flows hit a hw rx queue configured for zero copy. Configuring this
is outside of the scope of this patchset.
We share netdev core infra with devmem TCP. The main difference is
that io_uring is used for the uAPI and the lifetime of all objects
are bound to an io_uring instance. Data is 'read' using a new
io_uring request type. When done, data is returned via a new shared
refill queue. A zero copy page pool refills a hw rx queue from this
refill queue directly. Of course, the lifetime of these data
buffers are managed by io_uring rather than the networking stack,
with different refcounting rules.
This patchset is the first step adding basic zero copy support. We
will extend this iteratively with new features e.g. dynamically
allocated zero copy areas, THP support, dmabuf support, improved
copy fallback, general optimisations and more'
In a local setup, I was able to saturate a 200G link with a single CPU
core, and at netdev conf 0x19 earlier this month, Jamal reported
188Gbit of bandwidth using a single core (no HT, including soft-irq).
Safe to say the efficiency is there, as bigger links would be needed
to find the per-core limit, and it's considerably more efficient and
faster than the existing devmem solution"
* tag 'for-6.15/io_uring-rx-zc-20250325' of git://git.kernel.dk/linux:
io_uring/zcrx: add selftest case for recvzc with read limit
io_uring/zcrx: add a read limit to recvzc requests
io_uring: add missing IORING_MAP_OFF_ZCRX_REGION in io_uring_mmap
io_uring: Rename KConfig to Kconfig
io_uring/zcrx: fix leaks on failed registration
io_uring/zcrx: recheck ifq on shutdown
io_uring/zcrx: add selftest
net: add documentation for io_uring zcrx
io_uring/zcrx: add copy fallback
io_uring/zcrx: throttle receive requests
io_uring/zcrx: set pp memory provider for an rx queue
io_uring/zcrx: add io_recvzc request
io_uring/zcrx: dma-map area for the device
io_uring/zcrx: implement zerocopy receive pp memory provider
io_uring/zcrx: grab a net device
io_uring/zcrx: add io_zcrx_area
io_uring/zcrx: add interface queue and refill queue
|
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git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull landlock updates from Mickaël Salaün:
"This brings two main changes to Landlock:
- A signal scoping fix with a new interface for user space to know if
it is compatible with the running kernel.
- Audit support to give visibility on why access requests are denied,
including the origin of the security policy, missing access rights,
and description of object(s). This was designed to limit log spam
as much as possible while still alerting about unexpected blocked
access.
With these changes come new and improved documentation, and a lot of
new tests"
* tag 'landlock-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: (36 commits)
landlock: Add audit documentation
selftests/landlock: Add audit tests for network
selftests/landlock: Add audit tests for filesystem
selftests/landlock: Add audit tests for abstract UNIX socket scoping
selftests/landlock: Add audit tests for ptrace
selftests/landlock: Test audit with restrict flags
selftests/landlock: Add tests for audit flags and domain IDs
selftests/landlock: Extend tests for landlock_restrict_self(2)'s flags
selftests/landlock: Add test for invalid ruleset file descriptor
samples/landlock: Enable users to log sandbox denials
landlock: Add LANDLOCK_RESTRICT_SELF_LOG_SUBDOMAINS_OFF
landlock: Add LANDLOCK_RESTRICT_SELF_LOG_*_EXEC_* flags
landlock: Log scoped denials
landlock: Log TCP bind and connect denials
landlock: Log truncate and IOCTL denials
landlock: Factor out IOCTL hooks
landlock: Log file-related denials
landlock: Log mount-related denials
landlock: Add AUDIT_LANDLOCK_DOMAIN and log domain status
landlock: Add AUDIT_LANDLOCK_ACCESS and log ptrace denials
...
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Stephen Rothwell reports htmldocs warnings on iommufd_vevent_header
tables:
Documentation/userspace-api/iommufd:323: ./include/uapi/linux/iommufd.h:1048: CRITICAL: Unexpected section title or transition.
------------------------------------------------------------------------- [docutils]
WARNING: kernel-doc './scripts/kernel-doc -rst -enable-lineno -sphinx-version 8.1.3 ./include/uapi/linux/iommufd.h' processing failed with: Documentation/userspace-api/iommufd:323: ./include/uapi/linux/iommufd.h:1048: (SEVERE/4) Unexpected section title or transition.
-------------------------------------------------------------------------
These are because Sphinx confuses the tables for section headings. Fix
the table markup to squash away above warnings.
Fixes: e36ba5ab808e ("iommufd: Add IOMMUFD_OBJ_VEVENTQ and IOMMUFD_CMD_VEVENTQ_ALLOC")
Link: https://patch.msgid.link/r/20250328114654.55840-1-bagasdotme@gmail.com
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/linux-next/20250318213359.5dc56fd1@canb.auug.org.au/
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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PASID usage requires PASID support in both device and IOMMU. Since the
iommu drivers always enable the PASID capability for the device if it
is supported, this extends the IOMMU_GET_HW_INFO to report the PASID
capability to userspace. Also, enhances the selftest accordingly.
Link: https://patch.msgid.link/r/20250321180143.8468-5-yi.l.liu@intel.com
Cc: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Zhangfei Gao <zhangfei.gao@linaro.org> #aarch64 platform
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
|
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git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this round, there are three major updates: (1) folio conversion,
(2) refactoring for mount API conversion, (3) some performance
improvement such as direct IO, checkpoint speed, and IO priority
hints.
For stability, there are patches which add more sanity checks and
fixes some major issues like i_size in atomic write operations and
write pointer recovery in zoned devices.
Enhancements:
- huge folio converion work by Matthew Wilcox
- clean up for mount API conversion by Eric Sandeen
- improve direct IO speed in the overwrite case
- add some sanity check on node consistency
- set highest IO priority for checkpoint thread
- keep POSIX_FADV_NOREUSE ranges and add sysfs entry to reclaim pages
- add ioctl to get IO priority hint
- add carve_out sysfs node for fsstat
Bug fixes:
- disable nat_bits during umount to avoid potential nat entry corruption
- fix missing i_size update on atomic writes
- fix missing discard for active segments
- fix running out of free segments
- fix out-of-bounds access in f2fs_truncate_inode_blocks()
- call f2fs_recover_quota_end() correctly
- fix potential deadloop in prepare_compress_overwrite()
- fix the missing write pointer correction for zoned device
- fix to avoid panic once fallocation fails for pinfile
- don't retry IO for corrupted data scenario
There are many other clean up patches and minor bug fixes as usual"
* tag 'f2fs-for-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (68 commits)
f2fs: fix missing discard for active segments
f2fs: optimize f2fs DIO overwrites
f2fs: fix to avoid atomicity corruption of atomic file
f2fs: pass sbi rather than sb to parse_options()
f2fs: pass sbi rather than sb to quota qf_name helpers
f2fs: defer readonly check vs norecovery
f2fs: Pass sbi rather than sb to f2fs_set_test_dummy_encryption
f2fs: make LAZYTIME a mount option flag
f2fs: make INLINECRYPT a mount option flag
f2fs: factor out an f2fs_default_check function
f2fs: consolidate unsupported option handling errors
f2fs: use f2fs_sb_has_device_alias during option parsing
f2fs: add carve_out sysfs node
f2fs: fix to avoid running out of free segments
f2fs: Remove f2fs_write_node_page()
f2fs: Remove f2fs_write_meta_page()
f2fs: Remove f2fs_write_data_page()
f2fs: Remove check for ->writepage
Revert "f2fs: rebuild nat_bits during umount"
f2fs: fix to avoid accessing uninitialized curseg
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"User visible changes:
- fall back to buffered write if direct io is done on a file that
requires checksums
- this avoids a problem with checksum mismatch errors, observed
e.g. on virtual images when writes to pages under writeback
cause the checksum mismatch reports
- this may lead to some performance degradation but currently the
recommended setup for VM images is to use the NOCOW file
attribute that also disables checksums
- fast/realtime zstd levels -15 to -1
- supported by mount options (compress=zstd:-5) and defrag ioctl
- improved speed, reduced compression ratio, check the commit for
sample measurements
- defrag ioctl extended to accept negative compression levels
- subpage mode
- remove warning when subpage mode is used, the feature is now
reasonably complete and tested
- in debug mode allow to create 2K b-tree nodes to allow testing
subpage on x86_64 with 4K pages too
Performance improvements:
- in send, better file path caching improves runtime (on sample load
by -30%)
- on s390x with hardware zlib support prepare the input buffer in a
better way to get the best results from the acceleration
- minor speed improvement in encoded read, avoid memory allocation in
synchronous mode
Core:
- enable stable writes on inodes, replacing manually waiting for
writeback and allowing to skip that on inodes without checksums
- add last checks and warnings for out-of-band dirty writes to pages,
requiring a fixup ("fixup worker"), this should not be necessary
since 5.8 where get_user_page() and pin_user_pages*() prevent this
- long history behind that, we'll be happy to remove the whole
infrastructure in the near future
- more folio API conversions and preparations for large folio support
- subpage cleanups and refactoring, split handling of data and
metadata to allow future support for large folios
- readpage works as block-by-block, no change for normal mode, this
is preparation for future subpage updates
- block group refcount fixes and hardening
- delayed iput fixes
- in zoned mode, fix zone activation on filesystem with missing
devices
Cleanups:
- inode parameter cleanups
- path auto-freeing updates
- code flow simplifications in send
- redundant parameter cleanups"
* tag 'for-6.15-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (164 commits)
btrfs: zoned: fix zone finishing with missing devices
btrfs: zoned: fix zone activation with missing devices
btrfs: remove end_no_trans label from btrfs_log_inode_parent()
btrfs: simplify condition for logging new dentries at btrfs_log_inode_parent()
btrfs: remove redundant else statement from btrfs_log_inode_parent()
btrfs: use memcmp_extent_buffer() at replay_one_extent()
btrfs: update outdated comment for overwrite_item()
btrfs: use variables to store extent buffer and slot at overwrite_item()
btrfs: avoid unnecessary memory allocation and copy at overwrite_item()
btrfs: don't clobber ret in btrfs_validate_super()
btrfs: prepare btrfs_page_mkwrite() for large folios
btrfs: prepare extent_io.c for future large folio support
btrfs: prepare btrfs_launcher_folio() for large folios support
btrfs: replace PAGE_SIZE with folio_size for subpage.[ch]
btrfs: add a size parameter to btrfs_alloc_subpage()
btrfs: subpage: make btrfs_is_subpage() check against a folio
btrfs: add extra warning if delayed iput is added when it's not allowed
btrfs: avoid redundant path slot assignment in btrfs_search_forward()
btrfs: remove unnecessary btrfs_key local variable in btrfs_search_forward()
btrfs: simplify the return value handling in search_ioctl()
...
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- Fix endpoint BAR testing so the test can skip disabled BARs instead of
reporting them as failures (Niklas Cassel)
- Verify that pci_endpoint interrupt tests set the correct IRQ type
(Kunihiko Hayashi)
- Fix interpretation of pci_endpoint_test_bars_read_bar() error returns
(Niklas Cassel)
- Fix potential string truncation in pci_endpoint_test_probe() (Niklas
Cassel)
- Increase endpoint test BAR size variable to accommodate BARs larger than
INT_MAX (Niklas Cassel)
- Release IRQs to avoid leak in pci_endpoint interrupt tests (Kunihiko
Hayashi)
- Log the correct IRQ type when pci_endpoint IRQ request test fails
(Kunihiko Hayashi)
- Remove pci_endpoint_test irq_type and no_msi globals; instead use
test->irq_type (Kunihiko Hayashi)
- Remove unnecessary use of managed IRQ functions in pci_endpoint_test
(Kunihiko Hayashi)
- Add and use IRQ_TYPE_* defines in pci_endpoint_test (Niklas Cassel)
- Add struct pci_epc_features.intx_capable and note that RK3568 and RK3588
can't raise INTx interrupts (Niklas Cassel)
- Expose supported IRQ types in CAPS so pci_endpoint_test can set
appropriate type (Niklas Cassel)
- Add PCITEST_IRQ_TYPE_AUTO to pci_endpoint_test for cases where the IRQ
type doesn't matter (Niklas Cassel)
* pci/endpoint-test:
misc: pci_endpoint_test: Add support for PCITEST_IRQ_TYPE_AUTO
PCI: endpoint: pci-epf-test: Expose supported IRQ types in CAPS register
PCI: dw-rockchip: Endpoint mode cannot raise INTx interrupts
PCI: endpoint: Add intx_capable to epc_features struct
selftests: pci_endpoint: Use IRQ_TYPE_* defines from UAPI header
misc: pci_endpoint_test: Use IRQ_TYPE_* defines from UAPI header
PCI: endpoint: pcitest: Add IRQ_TYPE_* defines to UAPI header
misc: pci_endpoint_test: Do not use managed IRQ functions
misc: pci_endpoint_test: Remove global 'irq_type' and 'no_msi'
misc: pci_endpoint_test: Fix 'irq_type' to convey the correct type
misc: pci_endpoint_test: Fix displaying 'irq_type' after 'request_irq' error
misc: pci_endpoint_test: Avoid issue of interrupts remaining after request_irq error
misc: pci_endpoint_test: Handle BAR sizes larger than INT_MAX
misc: pci_endpoint_test: Give disabled BARs a distinct error code
misc: pci_endpoint_test: Fix potential truncation in pci_endpoint_test_probe()
misc: pci_endpoint_test: Fix pci_endpoint_test_bars_read_bar() error handling
selftests: pci_endpoint: Add GET_IRQTYPE checks to each interrupt test
selftests: pci_endpoint: Skip disabled BARs
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- Use pci_resource_n() to simplify BAR/window resource lookup (Ilpo
Järvinen)
- Fix typo that repeatedly distributed resources to a bridge instead of
iterating over subordinate bridges, which resulted in too little space to
assign some BARs (Kai-Heng Feng)
- Relax bridge window tail sizing for optional resources, e.g., IOV BARs,
to avoid failures when removing and re-adding devices (Ilpo Järvinen)
- Fix a double counting error for I/O resources, as we previously did for
memory resources (Ilpo Järvinen)
- Use resource_set_{range,size}() helpers in more places (Ilpo Järvinen)
- Add pci_resource_is_iov() to identify IOV resources (Ilpo Järvinen)
- Add pci_resource_num() to look up the BAR number from the resource
pointer (Ilpo Järvinen)
- Add restore_dev_resource() to simplify code that resources saved device
resources (Ilpo Järvinen)
- Allow drivers to enable devices even if we haven't assigned optional IOV
resources to them (Ilpo Järvinen)
- Improve debug output during resource reallocation (Ilpo Järvinen)
- Rework handling of optional resources (IOV BARs, ROMs) to reduce failures
if we can't allocate them (Ilpo Järvinen)
- Move declarations of pci_rescan_bus_bridge_resize(),
pci_reassign_bridge_resources(), and CardBus-related sizes from
include/linux/pci.h to drivers/pci/pci.h since they're not used outside
the PCI core (Ilpo Järvinen)
- Make pci_setup_bridge() static (Ilpo Järvinen)
- Fix a NULL dereference in the SR-IOV VF creation error path (Shay Drory)
- Fix s390 mmio_read/write syscalls, which didn't cause page faults in some
cases, which broke vfio-pci lazy mapping on first access (Niklas
Schnelle)
- Add pdev->non_mappable_bars to replace CONFIG_VFIO_PCI_MMAP, which was
disabled only for s390 (Niklas Schnelle)
- Support mmap of PCI resources on s390 except for ISM devices (Niklas
Schnelle)
* pci/resource:
s390/pci: Support mmap() of PCI resources except for ISM devices
s390/pci: Introduce pdev->non_mappable_bars and replace VFIO_PCI_MMAP
s390/pci: Fix s390_mmio_read/write syscall page fault handling
PCI: Fix NULL dereference in SR-IOV VF creation error path
PCI: Move cardbus IO size declarations into pci/pci.h
PCI: Make pci_setup_bridge() static
PCI: Move resource reassignment func declarations into pci/pci.h
PCI: Move pci_rescan_bus_bridge_resize() declaration to pci/pci.h
PCI: Fix BAR resizing when VF BARs are assigned
PCI: Do not claim to release resource falsely
PCI: Increase Resizable BAR support from 512 GB to 128 TB
PCI: Rework optional resource handling
PCI: Perform reset_resource() and build fail list in sync
PCI: Use res->parent to check if resource is assigned
PCI: Add debug print when releasing resources before retry
PCI: Indicate optional resource assignment failures
PCI: Always have realloc_head in __assign_resources_sorted()
PCI: Extend enable to check for any optional resource
PCI: Add restore_dev_resource()
PCI: Remove incorrect comment from pci_reassign_resource()
PCI: Consolidate assignment loop next round preparation
PCI: Rename retval to ret
PCI: Use while loop and break instead of gotos
PCI: Refactor pdev_sort_resources() & __dev_sort_resources()
PCI: Converge return paths in __assign_resources_sorted()
PCI: Add dev & res local variables to resource assignment funcs
PCI: Add pci_resource_num() helper
PCI: Check resource_size() separately
PCI: Add pci_resource_is_iov() to identify IOV resources
PCI: Use resource_set_{range,size}() helpers
PCI: Use SZ_* instead of literals in setup-bus.c
PCI: Fix old_size lower bound in calculate_iosize() too
PCI: Allow relaxed bridge window tail sizing for optional resources
PCI: Simplify size1 assignment logic
PCI: Use min_align, not unrelated add_align, for size0
PCI: Remove add_align overwrite unrelated to size0
PCI: Use downstream bridges for distributing resources
PCI: Cleanup dev->resource + resno to use pci_resource_n()
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- Rename DOE 'protocol' to 'feature' to follow spec terminology (Alistair
Francis)
- Expose supported DOE features via sysfs (Alistair Francis)
- Allow DOE support to be enabled even if CXL isn't enabled (Alistair
Francis)
* pci/doe:
PCI/DOE: Allow enabling DOE without CXL
PCI/DOE: Expose DOE features via sysfs
PCI/DOE: Rename Discovery Response Data Object Contents to type
PCI/DOE: Rename DOE protocol to feature
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Continue Netlink conversions to per-namespace RTNL lock
(IPv4 routing, routing rules, routing next hops, ARP ioctls)
- Continue extending the use of netdev instance locks. As a driver
opt-in protect queue operations and (in due course) ethtool
operations with the instance lock and not RTNL lock.
- Support collecting TCP timestamps (data submitted, sent, acked) in
BPF, allowing for transparent (to the application) and lower
overhead tracking of TCP RPC performance.
- Tweak existing networking Rx zero-copy infra to support zero-copy
Rx via io_uring.
- Optimize MPTCP performance in single subflow mode by 29%.
- Enable GRO on packets which went thru XDP CPU redirect (were queued
for processing on a different CPU). Improving TCP stream
performance up to 2x.
- Improve performance of contended connect() by 200% by searching for
an available 4-tuple under RCU rather than a spin lock. Bring an
additional 229% improvement by tweaking hash distribution.
- Avoid unconditionally touching sk_tsflags on RX, improving
performance under UDP flood by as much as 10%.
- Avoid skb_clone() dance in ping_rcv() to improve performance under
ping flood.
- Avoid FIB lookup in netfilter if socket is available, 20% perf win.
- Rework network device creation (in-kernel) API to more clearly
identify network namespaces and their roles. There are up to 4
namespace roles but we used to have just 2 netns pointer arguments,
interpreted differently based on context.
- Use sysfs_break_active_protection() instead of trylock to avoid
deadlocks between unregistering objects and sysfs access.
- Add a new sysctl and sockopt for capping max retransmit timeout in
TCP.
- Support masking port and DSCP in routing rule matches.
- Support dumping IPv4 multicast addresses with RTM_GETMULTICAST.
- Support specifying at what time packet should be sent on AF_XDP
sockets.
- Expose TCP ULP diagnostic info (for TLS and MPTCP) to non-admin
users.
- Add Netlink YAML spec for WiFi (nl80211) and conntrack.
- Introduce EXPORT_IPV6_MOD() and EXPORT_IPV6_MOD_GPL() for symbols
which only need to be exported when IPv6 support is built as a
module.
- Age FDB entries based on Rx not Tx traffic in VxLAN, similar to
normal bridging.
- Allow users to specify source port range for GENEVE tunnels.
- netconsole: allow attaching kernel release, CPU ID and task name to
messages as metadata
Driver API:
- Continue rework / fixing of Energy Efficient Ethernet (EEE) across
the SW layers. Delegate the responsibilities to phylink where
possible. Improve its handling in phylib.
- Support symmetric OR-XOR RSS hashing algorithm.
- Support tracking and preserving IRQ affinity by NAPI itself.
- Support loopback mode speed selection for interface selftests.
Device drivers:
- Remove the IBM LCS driver for s390
- Remove the sb1000 cable modem driver
- Add support for SFP module access over SMBus
- Add MCTP transport driver for MCTP-over-USB
- Enable XDP metadata support in multiple drivers
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- add PCIe TLP Processing Hints (TPH) support for new AMD
platforms
- support dumping RoCE queue state for debug
- opt into instance locking
- Intel (100G, ice, idpf):
- ice: rework MSI-X IRQ management and distribution
- ice: support for E830 devices
- iavf: add support for Rx timestamping
- iavf: opt into instance locking
- nVidia/Mellanox:
- mlx4: use page pool memory allocator for Rx
- mlx5: support for one PTP device per hardware clock
- mlx5: support for 200Gbps per-lane link modes
- mlx5: move IPSec policy check after decryption
- AMD/Solarflare:
- support FW flashing via devlink
- Cisco (enic):
- use page pool memory allocator for Rx
- enable 32, 64 byte CQEs
- get max rx/tx ring size from the device
- Meta (fbnic):
- support flow steering and RSS configuration
- report queue stats
- support TCP segmentation
- support IRQ coalescing
- support ring size configuration
- Marvell/Cavium:
- support AF_XDP
- Wangxun:
- support for PTP clock and timestamping
- Huawei (hibmcge):
- checksum offload
- add more statistics
- Ethernet virtual:
- VirtIO net:
- aggressively suppress Tx completions, improve perf by 96%
with 1 CPU and 55% with 2 CPUs
- expose NAPI to IRQ mapping and persist NAPI settings
- Google (gve):
- support XDP in DQO RDA Queue Format
- opt into instance locking
- Microsoft vNIC:
- support BIG TCP
- Ethernet NICs consumer, and embedded:
- Synopsys (stmmac):
- cleanup Tx and Tx clock setting and other link-focused
cleanups
- enable SGMII and 2500BASEX mode switching for Intel platforms
- support Sophgo SG2044
- Broadcom switches (b53):
- support for BCM53101
- TI:
- iep: add perout configuration support
- icssg: support XDP
- Cadence (macb):
- implement BQL
- Xilinx (axinet):
- support dynamic IRQ moderation and changing coalescing at
runtime
- implement BQL
- report standard stats
- MediaTek:
- support phylink managed EEE
- Intel:
- igc: don't restart the interface on every XDP program change
- RealTek (r8169):
- support reading registers of internal PHYs directly
- increase max jumbo packet size on RTL8125/RTL8126
- Airoha:
- support for RISC-V NPU packet processing unit
- enable scatter-gather and support MTU up to 9kB
- Tehuti (tn40xx):
- support cards with TN4010 MAC and an Aquantia AQR105 PHY
- Ethernet PHYs:
- support for TJA1102S, TJA1121
- dp83tg720: add randomized polling intervals for link detection
- dp83822: support changing the transmit amplitude voltage
- support for LEDs on 88q2xxx
- CAN:
- canxl: support Remote Request Substitution bit access
- flexcan: add S32G2/S32G3 SoC
- WiFi:
- remove cooked monitor support
- strict mode for better AP testing
- basic EPCS support
- OMI RX bandwidth reduction support
- batman-adv: add support for jumbo frames
- WiFi drivers:
- RealTek (rtw88):
- support RTL8814AE and RTL8814AU
- RealTek (rtw89):
- switch using wiphy_lock and wiphy_work
- add BB context to manipulate two PHY as preparation of MLO
- improve BT-coexistence mechanism to play A2DP smoothly
- Intel (iwlwifi):
- add new iwlmld sub-driver for latest HW/FW combinations
- MediaTek (mt76):
- preparation for mt7996 Multi-Link Operation (MLO) support
- Qualcomm/Atheros (ath12k):
- continued work on MLO
- Silabs (wfx):
- Wake-on-WLAN support
- Bluetooth:
- add support for skb TX SND/COMPLETION timestamping
- hci_core: enable buffer flow control for SCO/eSCO
- coredump: log devcd dumps into the monitor
- Bluetooth drivers:
- intel: add support to configure TX power
- nxp: handle bootloader error during cmd5 and cmd7"
* tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1681 commits)
unix: fix up for "apparmor: add fine grained af_unix mediation"
mctp: Fix incorrect tx flow invalidation condition in mctp-i2c
net: usb: asix: ax88772: Increase phy_name size
net: phy: Introduce PHY_ID_SIZE — minimum size for PHY ID string
net: libwx: fix Tx L4 checksum
net: libwx: fix Tx descriptor content for some tunnel packets
atm: Fix NULL pointer dereference
net: tn40xx: add pci-id of the aqr105-based Tehuti TN4010 cards
net: tn40xx: prepare tn40xx driver to find phy of the TN9510 card
net: tn40xx: create swnode for mdio and aqr105 phy and add to mdiobus
net: phy: aquantia: add essential functions to aqr105 driver
net: phy: aquantia: search for firmware-name in fwnode
net: phy: aquantia: add probe function to aqr105 for firmware loading
net: phy: Add swnode support to mdiobus_scan
gve: add XDP DROP and PASS support for DQ
gve: update XDP allocation path support RX buffer posting
gve: merge packet buffer size fields
gve: update GQ RX to use buf_size
gve: introduce config-based allocation for XDP
gve: remove xdp_xsk_done and xdp_xsk_wakeup statistics
...
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Pull SCSI updates from James Bottomley:
"Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr,
mpt3sas) and the removal of cxlflash.
The only non-trivial core change is an addition to unit attention
handling to recognize UAs for power on/reset and new media so the tape
driver can use it"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (107 commits)
scsi: st: Tighten the page format heuristics with MODE SELECT
scsi: st: ERASE does not change tape location
scsi: st: Fix array overflow in st_setup()
scsi: target: tcm_loop: Fix wrong abort tag
scsi: lpfc: Restore clearing of NLP_UNREG_INP in ndlp->nlp_flag
scsi: hisi_sas: Fixed failure to issue vendor specific commands
scsi: fnic: Remove unnecessary NUL-terminations
scsi: fnic: Remove redundant flush_workqueue() calls
scsi: core: Use a switch statement when attaching VPD pages
scsi: ufs: renesas: Add initialization code for R-Car S4-8 ES1.2
scsi: ufs: renesas: Add reusable functions
scsi: ufs: renesas: Refactor 0x10ad/0x10af PHY settings
scsi: ufs: renesas: Remove register control helper function
scsi: ufs: renesas: Add register read to remove save/set/restore
scsi: ufs: renesas: Replace init data by init code
scsi: ufs: dt-bindings: renesas,ufs: Add calibration data
scsi: mpi3mr: Task Abort EH Support
scsi: storvsc: Don't report the host packet status as the hv status
scsi: isci: Make most module parameters static
scsi: megaraid_sas: Make most module parameters static
...
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Pull block updates from Jens Axboe:
- Fixes for integrity handling
- NVMe pull request via Keith:
- Secure concatenation for TCP transport (Hannes)
- Multipath sysfs visibility (Nilay)
- Various cleanups (Qasim, Baruch, Wang, Chen, Mike, Damien, Li)
- Correct use of 64-bit BARs for pci-epf target (Niklas)
- Socket fix for selinux when used in containers (Peijie)
- MD pull request via Yu:
- fix recovery can preempt resync (Li Nan)
- fix md-bitmap IO limit (Su Yue)
- fix raid10 discard with REQ_NOWAIT (Xiao Ni)
- fix raid1 memory leak (Zheng Qixing)
- fix mddev uaf (Yu Kuai)
- fix raid1,raid10 IO flags (Yu Kuai)
- some refactor and cleanup (Yu Kuai)
- Series cleaning up and fixing bugs in the bad block handling code
- Improve support for write failure simulation in null_blk
- Various lock ordering fixes
- Fixes for locking for debugfs attributes
- Various ublk related fixes and improvements
- Cleanups for blk-rq-qos wait handling
- blk-throttle fixes
- Fixes for loop dio and sync handling
- Fixes and cleanups for the auto-PI code
- Block side support for hardware encryption keys in blk-crypto
- Various cleanups and fixes
* tag 'for-6.15/block-20250322' of git://git.kernel.dk/linux: (105 commits)
nvmet: replace max(a, min(b, c)) by clamp(val, lo, hi)
nvme-tcp: fix selinux denied when calling sock_sendmsg
nvmet: pci-epf: Always configure BAR0 as 64-bit
nvmet: Remove duplicate uuid_copy
nvme: zns: Simplify nvme_zone_parse_entry()
nvmet: pci-epf: Remove redundant 'flush_workqueue()' calls
nvmet-fc: Remove unused functions
nvme-pci: remove stale comment
nvme-fc: Utilise min3() to simplify queue count calculation
nvme-multipath: Add visibility for queue-depth io-policy
nvme-multipath: Add visibility for numa io-policy
nvme-multipath: Add visibility for round-robin io-policy
nvmet: add tls_concat and tls_key debugfs entries
nvmet-tcp: support secure channel concatenation
nvmet: Add 'sq' argument to alloc_ctrl_args
nvme-fabrics: reset admin connection for secure concatenation
nvme-tcp: request secure channel concatenation
nvme-keyring: add nvme_tls_psk_refresh()
nvme: add nvme_auth_derive_tls_psk()
nvme: add nvme_auth_generate_digest()
...
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Pull io_uring updates from Jens Axboe:
"This is the first of the io_uring pull requests for the 6.15 merge
window, there will be others once the net tree has gone in. This
contains:
- Cleanup and unification of cancelation handling across various
request types.
- Improvement for bundles, supporting them both for incrementally
consumed buffers, and for non-multishot requests.
- Enable toggling of using iowait while waiting on io_uring events or
not. Unfortunately this is still tied with CPU frequency boosting
on short waits, as the scheduler side has not been very receptive
to splitting the (useless) iowait stat from the cpufreq implied
boost.
- Add support for kbuf nodes, enabling zero-copy support for the ublk
block driver.
- Various cleanups for resource node handling.
- Series greatly cleaning up the legacy provided (non-ring based)
buffers. For years, we've been pushing the ring provided buffers as
the way to go, and that is what people have been using. Reduce the
complexity and code associated with legacy provided buffers.
- Series cleaning up the compat handling.
- Series improving and cleaning up the recvmsg/sendmsg iovec and msg
handling.
- Series of cleanups for io-wq.
- Start adding a bunch of selftests. The liburing repository
generally carries feature and regression tests for everything, but
at least for ublk initially, we'll try and go the route of having
it in selftests as well. We'll see how this goes, might decide to
migrate more tests this way in the future.
- Various little cleanups and fixes"
* tag 'for-6.15/io_uring-20250322' of git://git.kernel.dk/linux: (108 commits)
selftests: ublk: add stripe target
selftests: ublk: simplify loop io completion
selftests: ublk: enable zero copy for null target
selftests: ublk: prepare for supporting stripe target
selftests: ublk: move common code into common.c
selftests: ublk: increase max buffer size to 1MB
selftests: ublk: add single sqe allocator helper
selftests: ublk: add generic_01 for verifying sequential IO order
selftests: ublk: fix starting ublk device
io_uring: enable toggle of iowait usage when waiting on CQEs
selftests: ublk: fix write cache implementation
selftests: ublk: add variable for user to not show test result
selftests: ublk: don't show `modprobe` failure
selftests: ublk: add one dependency header
io_uring/kbuf: enable bundles for incrementally consumed buffers
Revert "io_uring/rsrc: simplify the bvec iter count calculation"
selftests: ublk: improve test usability
selftests: ublk: add stress test for covering IO vs. killing ublk server
selftests: ublk: add one stress test for covering IO vs. removing device
selftests: ublk: load/unload ublk_drv when preparing & cleaning up tests
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We've received lots of commits at this time, as a result of various
cleanup and refactoring works as well as a few new drivers and the
generic SoundWire support. Most of changes are device-specific, little
about the core changes. Some highlights below:
Core:
- A couple of (rather minor) race fixes in ALSA sequencer code
- A regression fix in ALSA timer code that may lead to a deadlock
ASoC:
- A large series of code conversion to use modern terminology for the
clocking configuration
- Conversions of PM ops with the modern macros in all ASoC drivers
- Clarification of the control operations
- Prepartory work for more generic SoundWire SCDA controls
- Support for AMD ACP 7.x, AWINC WM88166, Everest ES8388, Intel AVS
PEAKVOL and GAIN DSP modules Mediatek MT8188 DMIC, NXP i.MX95,
nVidia Tegra interconnects, Rockchip RK3588 S/PDIF, Texas
Instruments SN012776 and TAS5770L, and Wolfson WM8904 DMICs
Others:
- Conversions of PM ops with the modern macros in the rest drivers
- USB-audio quirks and fixes for Presonus Studio, DJM-A9, CME
- HD-audio quirks and fixes ASUS, HP, Lenovo, and others"
* tag 'sound-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (651 commits)
ALSA: hda: tas2781-i2c: Remove unnecessary NULL check before release_firmware()
ALSA: hda: cs35l56: Remove unnecessary NULL check before release_firmware()
ALSA: hda/realtek: Bass speaker fixup for ASUS UM5606KA
ALSA: hda/realtek: Fix built-in mic assignment on ASUS VivoBook X515UA
ALSA: hda/realtek: Add support for various HP Laptops using CS35L41 HDA
ALSA: timer: Don't take register_mutex with copy_from/to_user()
ASoC: SDCA: Correct handling of selected mode DisCo property
ASoC: amd: yc: update quirk data for new Lenovo model
ALSA: hda/realtek: fix micmute LEDs on HP Laptops with ALC3247
ALSA: hda/realtek: fix micmute LEDs on HP Laptops with ALC3315
ASoC: SOF: mediatek: Commonize duplicated functions
ASoC: dmic: Fix NULL pointer dereference
ASoC: wm8904: add DMIC support
ASoC: wm8904: get platform data from DT
ASoC: dt-bindings: wm8904: Add DMIC, GPIO, MIC and EQ support
ASoC: wm8904: Don't touch GPIO configs set to 0xFFFF
of: Add of_property_read_u16_index
ALSA: oxygen: Fix dependency on CONFIG_PM_SLEEP
ASoC: ops: Apply platform_max after deciding control type
ASoC: ops: Remove some unnecessary local variables
...
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Add LANDLOCK_RESTRICT_SELF_LOG_SUBDOMAINS_OFF for the case of sandboxer
tools, init systems, or runtime containers launching programs sandboxing
themselves in an inconsistent way. Setting this flag should only
depends on runtime configuration (i.e. not hardcoded).
We don't create a new ruleset's option because this should not be part
of the security policy: only the task that enforces the policy (not the
one that create it) knows if itself or its children may request denied
actions.
This is the first and only flag that can be set without actually
restricting the caller (i.e. without providing a ruleset).
Extend struct landlock_cred_security with a u8 log_subdomains_off.
struct landlock_file_security is still 16 bytes.
Cc: Günther Noack <gnoack@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Closes: https://github.com/landlock-lsm/linux/issues/3
Link: https://lore.kernel.org/r/20250320190717.2287696-19-mic@digikod.net
[mic: Fix comment]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Most of the time we want to log denied access because they should not
happen and such information helps diagnose issues. However, when
sandboxing processes that we know will try to access denied resources
(e.g. unknown, bogus, or malicious binary), we might want to not log
related access requests that might fill up logs.
By default, denied requests are logged until the task call execve(2).
If the LANDLOCK_RESTRICT_SELF_LOG_SAME_EXEC_OFF flag is set, denied
requests will not be logged for the same executed file.
If the LANDLOCK_RESTRICT_SELF_LOG_NEW_EXEC_ON flag is set, denied
requests from after an execve(2) call will be logged.
The rationale is that a program should know its own behavior, but not
necessarily the behavior of other programs.
Because LANDLOCK_RESTRICT_SELF_LOG_SAME_EXEC_OFF is set for a specific
Landlock domain, it makes it possible to selectively mask some access
requests that would be logged by a parent domain, which might be handy
for unprivileged processes to limit logs. However, system
administrators should still use the audit filtering mechanism. There is
intentionally no audit nor sysctl configuration to re-enable these logs.
This is delegated to the user space program.
Increment the Landlock ABI version to reflect this interface change.
Cc: Günther Noack <gnoack@google.com>
Cc: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20250320190717.2287696-18-mic@digikod.net
[mic: Rename variables and fix __maybe_unused]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Asynchronously log domain information when it first denies an access.
This minimize the amount of generated logs, which makes it possible to
always log denials for the current execution since they should not
happen. These records are identified with the new AUDIT_LANDLOCK_DOMAIN
type.
The AUDIT_LANDLOCK_DOMAIN message contains:
- the "domain" ID which is described;
- the "status" which can either be "allocated" or "deallocated";
- the "mode" which is for now only "enforcing";
- for the "allocated" status, a minimal set of properties to easily
identify the task that loaded the domain's policy with
landlock_restrict_self(2): "pid", "uid", executable path ("exe"), and
command line ("comm");
- for the "deallocated" state, the number of "denials" accounted to this
domain, which is at least 1.
This requires each domain to save these task properties at creation
time in the new struct landlock_details. A reference to the PID is kept
for the lifetime of the domain to avoid race conditions when
investigating the related task. The executable path is resolved and
stored to not keep a reference to the filesystem and block related
actions. All these metadata are stored for the lifetime of the related
domain and should then be minimal. The required memory is not accounted
to the task calling landlock_restrict_self(2) contrary to most other
Landlock allocations (see related comment).
The AUDIT_LANDLOCK_DOMAIN record follows the first AUDIT_LANDLOCK_ACCESS
record for the same domain, which is always followed by AUDIT_SYSCALL
and AUDIT_PROCTITLE. This is in line with the audit logic to first
record the cause of an event, and then add context with other types of
record.
Audit event sample for a first denial:
type=LANDLOCK_ACCESS msg=audit(1732186800.349:44): domain=195ba459b blockers=ptrace opid=1 ocomm="systemd"
type=LANDLOCK_DOMAIN msg=audit(1732186800.349:44): domain=195ba459b status=allocated mode=enforcing pid=300 uid=0 exe="/root/sandboxer" comm="sandboxer"
type=SYSCALL msg=audit(1732186800.349:44): arch=c000003e syscall=101 success=no [...] pid=300 auid=0
Audit event sample for a following denial:
type=LANDLOCK_ACCESS msg=audit(1732186800.372:45): domain=195ba459b blockers=ptrace opid=1 ocomm="systemd"
type=SYSCALL msg=audit(1732186800.372:45): arch=c000003e syscall=101 success=no [...] pid=300 auid=0
Log domain deletion with the "deallocated" state when a domain was
previously logged. This makes it possible for log parsers to free
potential resources when a domain ID will never show again.
The number of denied access requests is useful to easily check how many
access requests a domain blocked and potentially if some of them are
missing in logs because of audit rate limiting, audit rules, or Landlock
log configuration flags (see following commit).
Audit event sample for a deletion of a domain that denied something:
type=LANDLOCK_DOMAIN msg=audit(1732186800.393:46): domain=195ba459b status=deallocated denials=2
Cc: Günther Noack <gnoack@google.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20250320190717.2287696-11-mic@digikod.net
[mic: Update comment and GFP flag for landlock_log_drop_domain()]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Add a new AUDIT_LANDLOCK_ACCESS record type dedicated to an access
request denied by a Landlock domain. AUDIT_LANDLOCK_ACCESS indicates
that something unexpected happened.
For now, only denied access are logged, which means that any
AUDIT_LANDLOCK_ACCESS record is always followed by a SYSCALL record with
"success=no". However, log parsers should check this syscall property
because this is the only sign that a request was denied. Indeed, we
could have "success=yes" if Landlock would support a "permissive" mode.
We could also add a new field to AUDIT_LANDLOCK_DOMAIN for this mode
(see following commit).
By default, the only logged access requests are those coming from the
same executed program that enforced the Landlock restriction on itself.
In other words, no audit record are created for a task after it called
execve(2). This is required to avoid log spam because programs may only
be aware of their own restrictions, but not the inherited ones.
Following commits will allow to conditionally generate
AUDIT_LANDLOCK_ACCESS records according to dedicated
landlock_restrict_self(2)'s flags.
The AUDIT_LANDLOCK_ACCESS message contains:
- the "domain" ID restricting the action on an object,
- the "blockers" that are missing to allow the requested access,
- a set of fields identifying the related object (e.g. task identified
with "opid" and "ocomm").
The blockers are implicit restrictions (e.g. ptrace), or explicit access
rights (e.g. filesystem), or explicit scopes (e.g. signal). This field
contains a list of at least one element, each separated with a comma.
The initial blocker is "ptrace", which describe all implicit Landlock
restrictions related to ptrace (e.g. deny tracing of tasks outside a
sandbox).
Add audit support to ptrace_access_check and ptrace_traceme hooks. For
the ptrace_access_check case, we log the current/parent domain and the
child task. For the ptrace_traceme case, we log the parent domain and
the current/child task. Indeed, the requester and the target are the
current task, but the action would be performed by the parent task.
Audit event sample:
type=LANDLOCK_ACCESS msg=audit(1729738800.349:44): domain=195ba459b blockers=ptrace opid=1 ocomm="systemd"
type=SYSCALL msg=audit(1729738800.349:44): arch=c000003e syscall=101 success=no [...] pid=300 auid=0
A following commit adds user documentation.
Add KUnit tests to check reading of domain ID relative to layer level.
The quick return for non-landlocked tasks is moved from task_ptrace() to
each LSM hooks.
It is not useful to inline the audit_enabled check because other
computation are performed by landlock_log_denial().
Use scoped guards for RCU read-side critical sections.
Cc: Günther Noack <gnoack@google.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Link: https://lore.kernel.org/r/20250320190717.2287696-10-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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For PCITEST_MSI we really want to set PCITEST_SET_IRQTYPE explicitly
to PCITEST_IRQ_TYPE_MSI, since we want to test if MSI works.
For PCITEST_MSIX we really want to set PCITEST_SET_IRQTYPE explicitly
to PCITEST_IRQ_TYPE_MSIX, since we want to test if MSI works.
For PCITEST_LEGACY_IRQ we really want to set PCITEST_SET_IRQTYPE
explicitly to PCITEST_IRQ_TYPE_INTX, since we want to test if INTx
works.
However, for PCITEST_WRITE, PCITEST_READ, PCITEST_COPY, we really don't
care which IRQ type that is used, we just want to use a IRQ type that is
supported by the EPC.
The old behavior was to always use MSI for PCITEST_WRITE, PCITEST_READ,
PCITEST_COPY, was to always set IRQ type to MSI before doing the actual
test, however, there are EPC drivers that do not support MSI.
Add a new PCITEST_IRQ_TYPE_AUTO, that will use the CAPS register to see
which IRQ types the endpoint supports, and use one of the supported IRQ
types.
For backwards compatibility, if the endpoint does not expose any supported
IRQ type in the CAPS register, simply fallback to using MSI, as it was
unconditionally done before.
Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Link: https://lore.kernel.org/r/20250310111016.859445-16-cassel@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- platform: synopsys: hdmirx: Fix 64-bit division for 32-bit targets
- vim2m: print device name after registering device
- Synopsys DesignWare HDMI RX Driver and various fixes
- cec/printk fixes and the removal of the vidioc_g/s_ctrl and
vidioc_queryctrl callbacks
- AVerMedia H789-C PCIe support and rc-core structs padding
- Several camera sensor patches
- uvcvideo improvements
- visl: Fix ERANGE error when setting enum controls
- codec fixes
- V4L2 camera sensor patches mostly
- chips-media: wave5: Fixes
- Add SDM670 camera subsystem
- Qualcomm iris video decoder driver
- dt-bindings: update clocks for sc7280-camss
- various fixes and enhancements
* tag 'media/v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (264 commits)
media: pci: mgb4: include linux/errno.h
media: synopsys: hdmirx: Fix signedness bug in hdmirx_parse_dt()
media: platform: synopsys: hdmirx: Fix 64-bit division for 32-bit targets
media: vim2m: print device name after registering device
media: vivid: Introduce VIDEO_VIVID_OSD
media: vivid: Move all fb_info references into vivid-osd
media: platform: synopsys: hdmirx: Optimize struct snps_hdmirx_dev
media: platform: synopsys: hdmirx: Remove unused HDMI audio CODEC relics
media: platform: synopsys: hdmirx: Remove duplicated header inclusion
media: qcom: Clean up Kconfig dependencies
media: dvb-frontends: tda10048: Make the range of z explicit.
media: platform: stm32: Add check for clk_enable()
media: xilinx-tpg: fix double put in xtpg_parse_of()
media: siano: Fix error handling in smsdvb_module_init()
media: c8sectpfe: Call of_node_put(i2c_bus) only once in c8sectpfe_probe()
media: i2c: tda1997x: Call of_node_put(ep) only once in tda1997x_parse_dt()
dt-bindings: media: mediatek,vcodec: Revise description
dt-bindings: media: mediatek,jpeg: Relax IOMMU max item count
media: v4l2-dv-timings: prevent possible overflow in v4l2_detect_gtf()
media: rockchip: rga: fix rga offset lookup
...
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Add support for running as the root partition in Hyper-V (Microsoft
Hypervisor) by exposing /dev/mshv (Nuno and various people)
- Add support for CPU offlining in Hyper-V (Hamza Mahfooz)
- Misc fixes and cleanups (Roman Kisel, Tianyu Lan, Wei Liu, Michael
Kelley, Thorsten Blum)
* tag 'hyperv-next-signed-20250324' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (24 commits)
x86/hyperv: fix an indentation issue in mshyperv.h
x86/hyperv: Add comments about hv_vpset and var size hypercall input args
Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs
hyperv: Add definitions for root partition driver to hv headers
x86: hyperv: Add mshv_handler() irq handler and setup function
Drivers: hv: Introduce per-cpu event ring tail
Drivers: hv: Export some functions for use by root partition module
acpi: numa: Export node_to_pxm()
hyperv: Introduce hv_recommend_using_aeoi()
arm64/hyperv: Add some missing functions to arm64
x86/mshyperv: Add support for extended Hyper-V features
hyperv: Log hypercall status codes as strings
x86/hyperv: Fix check of return value from snp_set_vmsa()
x86/hyperv: Add VTL mode callback for restarting the system
x86/hyperv: Add VTL mode emergency restart callback
hyperv: Remove unused union and structs
hyperv: Add CONFIG_MSHV_ROOT to gate root partition support
hyperv: Change hv_root_partition into a function
hyperv: Convert hypercall statuses to linux error codes
drivers/hv: add CPU offlining support
...
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Pull kvm updates from Paolo Bonzini:
"ARM:
- Nested virtualization support for VGICv3, giving the nested
hypervisor control of the VGIC hardware when running an L2 VM
- Removal of 'late' nested virtualization feature register masking,
making the supported feature set directly visible to userspace
- Support for emulating FEAT_PMUv3 on Apple silicon, taking advantage
of an IMPLEMENTATION DEFINED trap that covers all PMUv3 registers
- Paravirtual interface for discovering the set of CPU
implementations where a VM may run, addressing a longstanding issue
of guest CPU errata awareness in big-little systems and
cross-implementation VM migration
- Userspace control of the registers responsible for identifying a
particular CPU implementation (MIDR_EL1, REVIDR_EL1, AIDR_EL1),
allowing VMs to be migrated cross-implementation
- pKVM updates, including support for tracking stage-2 page table
allocations in the protected hypervisor in the 'SecPageTable' stat
- Fixes to vPMU, ensuring that userspace updates to the vPMU after
KVM_RUN are reflected into the backing perf events
LoongArch:
- Remove unnecessary header include path
- Assume constant PGD during VM context switch
- Add perf events support for guest VM
RISC-V:
- Disable the kernel perf counter during configure
- KVM selftests improvements for PMU
- Fix warning at the time of KVM module removal
x86:
- Add support for aging of SPTEs without holding mmu_lock.
Not taking mmu_lock allows multiple aging actions to run in
parallel, and more importantly avoids stalling vCPUs. This includes
an implementation of per-rmap-entry locking; aging the gfn is done
with only a per-rmap single-bin spinlock taken, whereas locking an
rmap for write requires taking both the per-rmap spinlock and the
mmu_lock.
Note that this decreases slightly the accuracy of accessed-page
information, because changes to the SPTE outside aging might not
use atomic operations even if they could race against a clear of
the Accessed bit.
This is deliberate because KVM and mm/ tolerate false
positives/negatives for accessed information, and testing has shown
that reducing the latency of aging is far more beneficial to
overall system performance than providing "perfect" young/old
information.
- Defer runtime CPUID updates until KVM emulates a CPUID instruction,
to coalesce updates when multiple pieces of vCPU state are
changing, e.g. as part of a nested transition
- Fix a variety of nested emulation bugs, and add VMX support for
synthesizing nested VM-Exit on interception (instead of injecting
#UD into L2)
- Drop "support" for async page faults for protected guests that do
not set SEND_ALWAYS (i.e. that only want async page faults at CPL3)
- Bring a bit of sanity to x86's VM teardown code, which has
accumulated a lot of cruft over the years. Particularly, destroy
vCPUs before the MMU, despite the latter being a VM-wide operation
- Add common secure TSC infrastructure for use within SNP and in the
future TDX
- Block KVM_CAP_SYNC_REGS if guest state is protected. It does not
make sense to use the capability if the relevant registers are not
available for reading or writing
- Don't take kvm->lock when iterating over vCPUs in the suspend
notifier to fix a largely theoretical deadlock
- Use the vCPU's actual Xen PV clock information when starting the
Xen timer, as the cached state in arch.hv_clock can be stale/bogus
- Fix a bug where KVM could bleed PVCLOCK_GUEST_STOPPED across
different PV clocks; restrict PVCLOCK_GUEST_STOPPED to kvmclock, as
KVM's suspend notifier only accounts for kvmclock, and there's no
evidence that the flag is actually supported by Xen guests
- Clean up the per-vCPU "cache" of its reference pvclock, and instead
only track the vCPU's TSC scaling (multipler+shift) metadata (which
is moderately expensive to compute, and rarely changes for modern
setups)
- Don't write to the Xen hypercall page on MSR writes that are
initiated by the host (userspace or KVM) to fix a class of bugs
where KVM can write to guest memory at unexpected times, e.g.
during vCPU creation if userspace has set the Xen hypercall MSR
index to collide with an MSR that KVM emulates
- Restrict the Xen hypercall MSR index to the unofficial synthetic
range to reduce the set of possible collisions with MSRs that are
emulated by KVM (collisions can still happen as KVM emulates
Hyper-V MSRs, which also reside in the synthetic range)
- Clean up and optimize KVM's handling of Xen MSR writes and
xen_hvm_config
- Update Xen TSC leaves during CPUID emulation instead of modifying
the CPUID entries when updating PV clocks; there is no guarantee PV
clocks will be updated between TSC frequency changes and CPUID
emulation, and guest reads of the TSC leaves should be rare, i.e.
are not a hot path
x86 (Intel):
- Fix a bug where KVM unnecessarily reads XFD_ERR from hardware and
thus modifies the vCPU's XFD_ERR on a #NM due to CR0.TS=1
- Pass XFD_ERR as the payload when injecting #NM, as a preparatory
step for upcoming FRED virtualization support
- Decouple the EPT entry RWX protection bit macros from the EPT
Violation bits, both as a general cleanup and in anticipation of
adding support for emulating Mode-Based Execution Control (MBEC)
- Reject KVM_RUN if userspace manages to gain control and stuff
invalid guest state while KVM is in the middle of emulating nested
VM-Enter
- Add a macro to handle KVM's sanity checks on entry/exit VMCS
control pairs in anticipation of adding sanity checks for secondary
exit controls (the primary field is out of bits)
x86 (AMD):
- Ensure the PSP driver is initialized when both the PSP and KVM
modules are built-in (the initcall framework doesn't handle
dependencies)
- Use long-term pins when registering encrypted memory regions, so
that the pages are migrated out of MIGRATE_CMA/ZONE_MOVABLE and
don't lead to excessive fragmentation
- Add macros and helpers for setting GHCB return/error codes
- Add support for Idle HLT interception, which elides interception if
the vCPU has a pending, unmasked virtual IRQ when HLT is executed
- Fix a bug in INVPCID emulation where KVM fails to check for a
non-canonical address
- Don't attempt VMRUN for SEV-ES+ guests if the vCPU's VMSA is
invalid, e.g. because the vCPU was "destroyed" via SNP's AP
Creation hypercall
- Reject SNP AP Creation if the requested SEV features for the vCPU
don't match the VM's configured set of features
Selftests:
- Fix again the Intel PMU counters test; add a data load and do
CLFLUSH{OPT} on the data instead of executing code. The theory is
that modern Intel CPUs have learned new code prefetching tricks
that bypass the PMU counters
- Fix a flaw in the Intel PMU counters test where it asserts that an
event is counting correctly without actually knowing what the event
counts on the underlying hardware
- Fix a variety of flaws, bugs, and false failures/passes
dirty_log_test, and improve its coverage by collecting all dirty
entries on each iteration
- Fix a few minor bugs related to handling of stats FDs
- Add infrastructure to make vCPU and VM stats FDs available to tests
by default (open the FDs during VM/vCPU creation)
- Relax an assertion on the number of HLT exits in the xAPIC IPI test
when running on a CPU that supports AMD's Idle HLT (which elides
interception of HLT if a virtual IRQ is pending and unmasked)"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (216 commits)
RISC-V: KVM: Optimize comments in kvm_riscv_vcpu_isa_disable_allowed
RISC-V: KVM: Teardown riscv specific bits after kvm_exit
LoongArch: KVM: Register perf callbacks for guest
LoongArch: KVM: Implement arch-specific functions for guest perf
LoongArch: KVM: Add stub for kvm_arch_vcpu_preempted_in_kernel()
LoongArch: KVM: Remove PGD saving during VM context switch
LoongArch: KVM: Remove unnecessary header include path
KVM: arm64: Tear down vGIC on failed vCPU creation
KVM: arm64: PMU: Reload when resetting
KVM: arm64: PMU: Reload when user modifies registers
KVM: arm64: PMU: Fix SET_ONE_REG for vPMC regs
KVM: arm64: PMU: Assume PMU presence in pmu-emul.c
KVM: arm64: PMU: Set raw values from user to PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}
KVM: arm64: Create each pKVM hyp vcpu after its corresponding host vcpu
KVM: arm64: Factor out pKVM hyp vcpu creation to separate function
KVM: arm64: Initialize HCRX_EL2 traps in pKVM
KVM: arm64: Factor out setting HCRX_EL2 traps into separate function
KVM: x86: block KVM_CAP_SYNC_REGS if guest state is protected
KVM: x86: Add infrastructure for secure TSC
KVM: x86: Push down setting vcpu.arch.user_set_tsc
...
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next
Luiz Augusto von Dentz says:
====================
bluetooth-next pull request for net-next:
core:
- Add support for skb TX SND/COMPLETION timestamping
- hci_core: Enable buffer flow control for SCO/eSCO
- coredump: Log devcd dumps into the monitor
drivers:
- btusb: Add 2 HWIDs for MT7922
- btusb: Fix regression in the initialization of fake Bluetooth controllers
- btusb: Add 14 USB device IDs for Qualcomm WCN785x
- btintel: Add support for Intel Scorpius Peak
- btintel: Add support to configure TX power
- btintel: Add DSBR support for ScP
- btintel_pcie: Add device id of Whale Peak
- btintel_pcie: Setup buffers for firmware traces
- btintel_pcie: Read hardware exception data
- btintel_pcie: Add support for device coredump
- btintel_pcie: Trigger device coredump on hardware exception
- btnxpuart: Support for controller wakeup gpio config
- btnxpuart: Add support to set BD address
- btnxpuart: Add correct bootloader error codes
- btnxpuart: Handle bootloader error during cmd5 and cmd7
- btnxpuart: Fix kernel panic during FW release
- qca: add WCN3950 support
- hci_qca: use the power sequencer for wcn6750
- btmtksdio: Prevent enabling interrupts after IRQ handler removal
* tag 'for-net-next-2025-03-25' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next: (53 commits)
Bluetooth: MGMT: Add LL Privacy Setting
Bluetooth: hci_event: Fix handling of HCI_EV_LE_DIRECT_ADV_REPORT
Bluetooth: btnxpuart: Fix kernel panic during FW release
Bluetooth: btnxpuart: Handle bootloader error during cmd5 and cmd7
Bluetooth: btnxpuart: Add correct bootloader error codes
t blameBluetooth: btintel: Fix leading white space
Bluetooth: btintel: Add support to configure TX power
Bluetooth: btmtksdio: Prevent enabling interrupts after IRQ handler removal
Bluetooth: btmtk: Remove the resetting step before downloading the fw
Bluetooth: SCO: add TX timestamping
Bluetooth: L2CAP: add TX timestamping
Bluetooth: ISO: add TX timestamping
Bluetooth: add support for skb TX SND/COMPLETION timestamping
net-timestamp: COMPLETION timestamp on packet tx completion
HCI: coredump: Log devcd dumps into the monitor
Bluetooth: HCI: Add definition of hci_rp_remote_name_req_cancel
Bluetooth: hci_vhci: Mark Sync Flow Control as supported
Bluetooth: hci_core: Enable buffer flow control for SCO/eSCO
Bluetooth: btintel_pci: Fix build warning
Bluetooth: btintel_pcie: Trigger device coredump on hardware exception
...
====================
Link: https://patch.msgid.link/20250325192925.2497890-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Nothing major this time around.
Apart from the usual perf/PMU updates, some page table cleanups, the
notable features are average CPU frequency based on the AMUv1
counters, CONFIG_HOTPLUG_SMT and MOPS instructions (memcpy/memset) in
the uaccess routines.
Perf and PMUs:
- Support for the 'Rainier' CPU PMU from Arm
- Preparatory driver changes and cleanups that pave the way for BRBE
support
- Support for partial virtualisation of the Apple-M1 PMU
- Support for the second event filter in Arm CSPMU designs
- Minor fixes and cleanups (CMN and DWC PMUs)
- Enable EL2 requirements for FEAT_PMUv3p9
Power, CPU topology:
- Support for AMUv1-based average CPU frequency
- Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It
adds a generic topology_is_primary_thread() function overridden by
x86 and powerpc
New(ish) features:
- MOPS (memcpy/memset) support for the uaccess routines
Security/confidential compute:
- Fix the DMA address for devices used in Realms with Arm CCA. The
CCA architecture uses the address bit to differentiate between
shared and private addresses
- Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
default
Memory management clean-ups:
- Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs
- Some minor page table accessor clean-ups
- PIE/POE (permission indirection/overlay) helpers clean-up
Kselftests:
- MTE: skip hugetlb tests if MTE is not supported on such mappings
and user correct naming for sync/async tag checking modes
Miscellaneous:
- Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
request)
- Sysreg updates for new register fields
- CPU type info for some Qualcomm Kryo cores"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (72 commits)
arm64: mm: Don't use %pK through printk
perf/arm_cspmu: Fix missing io.h include
arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
arm64: cputype: Add MIDR_CORTEX_A76AE
arm64: errata: Add KRYO 2XX/3XX/4XX silver cores to Spectre BHB safe list
arm64: errata: Assume that unknown CPUs _are_ vulnerable to Spectre BHB
arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list
arm64/sysreg: Enforce whole word match for open/close tokens
arm64/sysreg: Fix unbalanced closing block
arm64: Kconfig: Enable HOTPLUG_SMT
arm64: topology: Support SMT control on ACPI based system
arch_topology: Support SMT control for OF based system
cpu/SMT: Provide a default topology_is_primary_thread()
arm64/mm: Define PTDESC_ORDER
perf/arm_cspmu: Add PMEVFILT2R support
perf/arm_cspmu: Generalise event filtering
perf/arm_cspmu: Move register definitons to header
arm64/kernel: Always use level 2 or higher for early mappings
arm64/mm: Drop PXD_TABLE_BIT
arm64/mm: Check pmd_table() in pmd_trans_huge()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO infrastructure updates from Thomas Gleixner:
- Consolidate the VDSO storage
The VDSO data storage and data layout has been largely architecture
specific for historical reasons. That increases the maintenance
effort and causes inconsistencies over and over.
There is no real technical reason for architecture specific layouts
and implementations. The architecture specific details can easily be
integrated into a generic layout, which also reduces the amount of
duplicated code for managing the mappings.
Convert all architectures over to a unified layout and common mapping
infrastructure. This splits the VDSO data layout into subsystem
specific blocks, timekeeping, random and architecture parts, which
provides a better structure and allows to improve and update the
functionalities without conflict and interaction.
- Rework the timekeeping data storage
The current implementation is designed for exposing system
timekeeping accessors, which was good enough at the time when it was
designed.
PTP and Time Sensitive Networking (TSN) change that as there are
requirements to expose independent PTP clocks, which are not related
to system timekeeping.
Replace the monolithic data storage by a structured layout, which
allows to add support for independent PTP clocks on top while reusing
both the data structures and the time accessor implementations.
* tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits)
sparc/vdso: Always reject undefined references during linking
x86/vdso: Always reject undefined references during linking
vdso: Rework struct vdso_time_data and introduce struct vdso_clock
vdso: Move architecture related data before basetime data
powerpc/vdso: Prepare introduction of struct vdso_clock
arm64/vdso: Prepare introduction of struct vdso_clock
x86/vdso: Prepare introduction of struct vdso_clock
time/namespace: Prepare introduction of struct vdso_clock
vdso/namespace: Rename timens_setup_vdso_data() to reflect new vdso_clock struct
vdso/vsyscall: Prepare introduction of struct vdso_clock
vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_coarse_timens() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_coarse() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_hres_timens() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_hres() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare introduction of struct vdso_clock
vdso/helpers: Prepare introduction of struct vdso_clock
vdso/datapage: Define vdso_clock to prepare for multiple PTP clocks
vdso: Make vdso_time_data cacheline aligned
arm64: Make asm/cache.h compatible with vDSO
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner:
- Fix a memory ordering issue in posix-timers
Posix-timer lookup is lockless and reevaluates the timer validity
under the timer lock, but the update which validates the timer is not
protected by the timer lock. That allows the store to be reordered
against the initialization stores, so that the lookup side can
observe a partially initialized timer. That's mostly a theoretical
problem, but incorrect nevertheless.
- Fix a long standing inconsistency of the coarse time getters
The coarse time getters read the base time of the current update
cycle without reading the actual hardware clock. NTP frequency
adjustment can set the base time backwards. The fine grained
interfaces compensate this by reading the clock and applying the new
conversion factor, but the coarse grained time getters use the base
time directly. That allows the user to observe time going backwards.
Cure it by always forwarding base time, when NTP changes the
frequency with an immediate step.
- Rework of posix-timer hashing
The posix-timer hash is not scalable and due to the CRIU timer
restore mechanism prone to massive contention on the global hash
bucket lock.
Replace the global hash lock with a fine grained per bucket locking
scheme to address that.
- Rework the proc/$PID/timers interface.
/proc/$PID/timers is provided for CRIU to be able to restore a timer.
The printout happens with sighand lock held and interrupts disabled.
That's not required as this can be done with RCU protection as well.
- Provide a sane mechanism for CRIU to restore a timer ID
CRIU restores timers by creating and deleting them until the kernel
internal per process ID counter reached the requested ID. That's
horribly slow for sparse timer IDs.
Provide a prctl() which allows CRIU to restore a timer with a given
ID. When enabled the ID pointer is used as input pointer to read the
requested ID from user space. When disabled, the normal allocation
scheme (next ID) is active as before. This is backwards compatible
for both kernel and user space.
- Make hrtimer_update_function() less expensive.
The sanity checks are valuable, but expensive for high frequency
usage in io/uring. Make the debug checks conditional and enable them
only when lockdep is enabled.
- Small updates, cleanups and improvements
* tag 'timers-core-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
selftests/timers: Improve skew_consistency by testing with other clockids
timekeeping: Fix possible inconsistencies in _COARSE clockids
posix-timers: Drop redundant memset() invocation
selftests/timers/posix-timers: Add a test for exact allocation mode
posix-timers: Provide a mechanism to allocate a given timer ID
posix-timers: Dont iterate /proc/$PID/timers with sighand:: Siglock held
posix-timers: Make per process list RCU safe
posix-timers: Avoid false cacheline sharing
posix-timers: Switch to jhash32()
posix-timers: Improve hash table performance
posix-timers: Make signal_struct:: Next_posix_timer_id an atomic_t
posix-timers: Make lock_timer() use guard()
posix-timers: Rework timer removal
posix-timers: Simplify lock/unlock_timer()
posix-timers: Use guards in a few places
posix-timers: Remove SLAB_PANIC from kmem cache
posix-timers: Remove a few paranoid warnings
posix-timers: Cleanup includes
posix-timers: Add cond_resched() to posix_timer_add() search loop
posix-timers: Initialise timer before adding it to the hash table
...
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Add SOF_TIMESTAMPING_TX_COMPLETION, for requesting a software timestamp
when hardware reports a packet completed.
Completion tstamp is useful for Bluetooth, as hardware timestamps do not
exist in the HCI specification except for ISO packets, and the hardware
has a queue where packets may wait. In this case the software SND
timestamp only reflects the kernel-side part of the total latency
(usually small) and queue length (usually 0 unless HW buffers
congested), whereas the completion report time is more informative of
the true latency.
It may also be useful in other cases where HW TX timestamps cannot be
obtained and user wants to estimate an upper bound to when the TX
probably happened.
Signed-off-by: Pauli Virtanen <pav@iki.fi>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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struct virtio_net_rss_config was less useful in actual code because of a
flexible array placed in the middle. Add new structures that split it
into two to avoid having a flexible array in the middle.
Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Link: https://patch.msgid.link/20250321-virtio-v2-1-33afb8f4640b@daynix.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next
Johannes Berg says:
====================
More features for 6.15, major changes:
* cfg80211/mac80211: fix and enable link reconfiguration
* rtw88: support RTL8814AE/RTL8814AU
* mt7996: preparations for MLO
* ath12k: continued work on MLO
* iwlwifi: add new iwlmld sub-driver/op-mode for
some current and future devices
* wfx: wowlan support
* tag 'wireless-next-2025-03-20' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next: (311 commits)
wifi: mt76: mt7996: fix locking in mt7996_mac_sta_rc_work()
wifi: mt76: mt76x2u: add TP-Link TL-WDN6200 ID to device table
wifi: mt76: mt792x: re-register CHANCTX_STA_CSA only for the mt7921 series
wifi: mt76: mt7996: Update mt7996_tx to MLO support
wifi: mt76: mt7996: rework mt7996_ampdu_action to support MLO
wifi: mt76: mt7996: rework set/get_tsf callabcks to support MLO
wifi: mt76: mt7996: set vif default link_id adding/removing vif links
wifi: mt76: mt7996: rework mt7996_mcu_beacon_inband_discov to support MLO
wifi: mt76: mt7996: rework mt7996_mcu_add_obss_spr to support MLO
wifi: mt76: mt7996: rework mt7996_net_fill_forward_path to support MLO
wifi: mt76: mt7996: rework mt7996_update_mu_group to support MLO
wifi: mt76: mt7996: rework mt7996_mac_sta_poll to support MLO
wifi: mt76: mt7996: rework mt7996_mac_sta_rc_work to support MLO
wifi: mt76: mt7996: remove mt7996_mac_enable_rtscts()
wifi: mt76: mt7996: rework mt7996_sta_hw_queue_read to support MLO
wifi: mt76: mt7996: rework mt7996_set_hw_key to support MLO
wifi: mt76: mt7996: Add mt7996_sta_link to mt7996_mcu_add_bss_info signature
wifi: mt76: mt7996: rework mt7996_sta_set_4addr and mt7996_sta_set_decap_offload to support MLO
wifi: mt76: mt7996: rework mt7996_rx_get_wcid to support MLO
wifi: mt76: mt7996: Rely on wcid_to_sta in mt7996_mac_add_txs_skb()
...
====================
Link: https://patch.msgid.link/20250320131106.33266-3-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit 14a196807482 ("net: reorganize IP MIB values") changed
MIB values to group hot fields together.
Since then 5 new fields have been added without caring about
data locality.
This patch moves IPSTATS_MIB_OUTPKTS, IPSTATS_MIB_NOECTPKTS,
IPSTATS_MIB_ECT1PKTS, IPSTATS_MIB_ECT0PKTS, IPSTATS_MIB_CEPKTS
to the hot portion of per-cpu data.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20250320101434.3174412-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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