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Document that the callback registered with iio_channel_get_all_cb()
must be safe to call from any context since it is called from by
iio_push_to_buffer() which can be called in any context.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Document that the struct iio_buffer_access_funcs.store_to() callback
must be safe to call from any context since it is called from
iio_push_to_buffer() which may be called from any context.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Replace the documentation of iio_push_to_buffers_with_timestamp() with
a deprecation notice pointing to the preferred alternative.
Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Document the iio_push_to_buffers_with_ts() function.
This is copied and slightly cleaned up from
iio_push_to_buffers_with_timestamp().
Signed-off-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Commit 6d4405b16d37 ("ata: libata-core: Cache the general purpose log
directory") introduced caching of a device general purpose log directory
to avoid repeated access to this log page during device scan. This
change also added a check on this log page to verify that the log page
version is 0x0001 as mandated by the ACS specifications.
And it turns out that some devices do not bother reporting this version,
instead reporting a version 0, resulting in error messages such as:
ata6.00: Invalid log directory version 0x0000
and to the device being marked as not supporting the general purpose log
directory log page.
Since before commit 6d4405b16d37 the log page version check did not
exist and things were still working correctly for these devices, relax
ata_read_log_directory() version check and only warn about the invalid
log page version number without disabling access to the log directory
page.
Fixes: 6d4405b16d37 ("ata: libata-core: Cache the general purpose log directory")
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220635
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
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Alt Mode drivers are responsible for sending Enter Mode through the TCPM,
but only a DFP is allowed to send Enter Mode. typec_get_data_role gets
the port's data role, which can then be used in altmode drivers via
typec_altmode_get_data_role to know if Enter Mode should be sent.
Signed-off-by: RD Babiera <rdbabiera@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20250923181606.1583584-5-rdbabiera@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Cross-merge BPF and other fixes after downstream PR.
No conflicts.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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This reverts commit 1a2b423be6a89dd07d5fc27ea042be68697a6a49 because we
got a regression report and need time to find out the details.
Reported-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Closes: https://lore.kernel.org/r/29ec0082-4dd4-4120-acd2-44b35b4b9487@oss.qualcomm.com
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more x86 updates from Borislav Petkov:
- Remove a bunch of asm implementing condition flags testing in KVM's
emulator in favor of int3_emulate_jcc() which is written in C
- Replace KVM fastops with C-based stubs which avoids problems with the
fastop infra related to latter not adhering to the C ABI due to their
special calling convention and, more importantly, bypassing compiler
control-flow integrity checking because they're written in asm
- Remove wrongly used static branches and other ugliness accumulated
over time in hyperv's hypercall implementation with a proper static
function call to the correct hypervisor call variant
- Add some fixes and modifications to allow running FRED-enabled
kernels in KVM even on non-FRED hardware
- Add kCFI improvements like validating indirect calls and prepare for
enabling kCFI with GCC. Add cmdline params documentation and other
code cleanups
- Use the single-byte 0xd6 insn as the official #UD single-byte
undefined opcode instruction as agreed upon by both x86 vendors
- Other smaller cleanups and touchups all over the place
* tag 'x86_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
x86,retpoline: Optimize patch_retpoline()
x86,ibt: Use UDB instead of 0xEA
x86/cfi: Remove __noinitretpoline and __noretpoline
x86/cfi: Add "debug" option to "cfi=" bootparam
x86/cfi: Standardize on common "CFI:" prefix for CFI reports
x86/cfi: Document the "cfi=" bootparam options
x86/traps: Clarify KCFI instruction layout
compiler_types.h: Move __nocfi out of compiler-specific header
objtool: Validate kCFI calls
x86/fred: KVM: VMX: Always use FRED for IRQs when CONFIG_X86_FRED=y
x86/fred: Play nice with invoking asm_fred_entry_from_kvm() on non-FRED hardware
x86/fred: Install system vector handlers even if FRED isn't fully enabled
x86/hyperv: Use direct call to hypercall-page
x86/hyperv: Clean up hv_do_hypercall()
KVM: x86: Remove fastops
KVM: x86: Convert em_salc() to C
KVM: x86: Introduce EM_ASM_3WCL
KVM: x86: Introduce EM_ASM_1SRC2
KVM: x86: Introduce EM_ASM_2CL
KVM: x86: Introduce EM_ASM_2W
...
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more updates from Andrew Morton:
"Just one series here - Mike Rappoport has taught KEXEC handover to
preserve vmalloc allocations across handover"
* tag 'mm-nonmm-stable-2025-10-10-15-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
lib/test_kho: use kho_preserve_vmalloc instead of storing addresses in fdt
kho: add support for preserving vmalloc allocations
kho: replace kho_preserve_phys() with kho_preserve_pages()
kho: check if kho is finalized in __kho_preserve_order()
MAINTAINERS, .mailmap: update Umang's email address
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"7 hotfixes. All 7 are cc:stable and all 7 are for MM.
All singletons, please see the changelogs for details"
* tag 'mm-hotfixes-stable-2025-10-10-15-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: hugetlb: avoid soft lockup when mprotect to large memory area
fsnotify: pass correct offset to fsnotify_mmap_perm()
mm/ksm: fix flag-dropping behavior in ksm_madvise
mm/damon/vaddr: do not repeat pte_offset_map_lock() until success
mm/rmap: fix soft-dirty and uffd-wp bit loss when remapping zero-filled mTHP subpage to shared zeropage
mm/thp: fix MTE tag mismatch when replacing zero-filled subpages
memcg: skip cgroup_file_notify if spinning is not allowed
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Allow mmap() on guest_memfd instances for x86 VMs with private memory as
the need to track private vs. shared state in the guest_memfd instance is
only pertinent to INIT_SHARED. Doing mmap() on private memory isn't
terrible useful (yet!), but it's now possible, and will be desirable when
guest_memfd gains support for other VMA-based syscalls, e.g. mbind() to
set NUMA policy.
Lift the restriction now, before MMAP support is officially released, so
that KVM doesn't need to add another capability to enumerate support for
mmap() on private memory.
Fixes: 3d3a04fad25a ("KVM: Allow and advertise support for host mmap() on guest_memfd files")
Reviewed-by: Ackerley Tng <ackerleytng@google.com>
Tested-by: Ackerley Tng <ackerleytng@google.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20251003232606.4070510-6-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Allow child nodes on renesas-bsc bus binding
- Drop node name pattern on allwinner,sun50i-a64-de2 bus binding
- Switch DT patchwork to kernel.org from ozlabs.org
- Fix some typos in docs and bindings
- Fix reference count in PCI node unittest
* tag 'devicetree-fixes-for-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: bus: renesas-bsc: allow additional properties
dt-bindings: bus: allwinner,sun50i-a64-de2: don't check node names
MAINTAINERS: Move DT patchwork to kernel.org
of: unittest: Fix device reference count leak in of_unittest_pci_node_verify
of: doc: Fix typo in doc comments.
dt-bindings: mmc: Correct typo "upto" to "up to"
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Pull ceph updates from Ilya Dryomov:
- some messenger improvements (Eric and Max)
- address an issue (also affected userspace) of incorrect permissions
being granted to users who have access to multiple different CephFS
instances within the same cluster (Kotresh)
- a bunch of assorted CephFS fixes (Slava)
* tag 'ceph-for-6.18-rc1' of https://github.com/ceph/ceph-client:
ceph: add bug tracking system info to MAINTAINERS
ceph: fix multifs mds auth caps issue
ceph: cleanup in ceph_alloc_readdir_reply_buffer()
ceph: fix potential NULL dereference issue in ceph_fill_trace()
libceph: add empty check to ceph_con_get_out_msg()
libceph: pass the message pointer instead of loading con->out_msg
libceph: make ceph_con_get_out_msg() return the message pointer
ceph: fix potential race condition on operations with CEPH_I_ODIRECT flag
ceph: refactor wake_up_bit() pattern of calling
ceph: fix potential race condition in ceph_ioctl_lazyio()
ceph: fix overflowed constant issue in ceph_do_objects_copy()
ceph: fix wrong sizeof argument issue in register_session()
ceph: add checking of wait_for_completion_killable() return value
ceph: make ceph_start_io_*() killable
libceph: Use HMAC-SHA256 library instead of crypto_shash
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The arraymap and hashtab duplicate the logic that checks for and frees
internal structs (timer, workqueue, task_work) based on
BTF record flags. Centralize this by introducing two helpers:
* bpf_map_has_internal_structs(map)
Returns true if the map value contains any of internal structs:
BPF_TIMER | BPF_WORKQUEUE | BPF_TASK_WORK.
* bpf_map_free_internal_structs(map, obj)
Frees the internal structs for a single value object.
Convert arraymap and both the prealloc/malloc hashtab paths to use the
new generic functions. This keeps the functionality for when/how to free
these special fields in one place and makes it easier to add support for
new internal structs in the future without touching every map
implementation.
Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20251010164606.147298-3-mykyta.yatsenko5@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Don't include __GFP_NOWARN for loop worker allocation, as it already
uses GFP_NOWAIT which has __GFP_NOWARN set already
- Small series cleaning up the recent bio_iov_iter_get_pages() changes
- loop fix for leaking the backing reference file, if validation fails
- Update of a comment pertaining to disk/partition stat locking
* tag 'block-6.18-20251009' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
loop: remove redundant __GFP_NOWARN flag
block: move bio_iov_iter_get_bdev_pages to block/fops.c
iomap: open code bio_iov_iter_get_bdev_pages
block: rename bio_iov_iter_get_pages_aligned to bio_iov_iter_get_pages
block: remove bio_iov_iter_get_pages
block: Update a comment of disk statistics
loop: fix backing file reference leak on validation error
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Rename the storage_get_func_atomic flag to a more generic non_sleepable
flag that tracks whether a helper or kfunc may be called from a
non-sleepable context. This makes the flag more broadly applicable
beyond just storage_get helpers. See [0] for more context.
The flag is now set unconditionally for all helpers and kfuncs when:
- RCU critical section is active.
- Preemption is disabled.
- IRQs are disabled.
- In a non-sleepable context within a sleepable program (e.g., timer
callbacks), which is indicated by !in_sleepable().
Previously, the flag was only set for storage_get helpers in these
contexts. With this change, it can be used by any code that needs to
differentiate between sleepable and non-sleepable contexts at the
per-instruction level.
The existing usage in do_misc_fixups() for storage_get helpers is
preserved by checking is_storage_get_function() before using the flag.
[0]: https://lore.kernel.org/bpf/CAP01T76cbaNi4p-y8E0sjE2NXSra2S=Uja8G4hSQDu_SbXxREQ@mail.gmail.com
Cc: Mykyta Yatsenko <yatsenko@meta.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Mykyta Yatsenko <mykyta.yatsenko5@gmail.com>
Link: https://lore.kernel.org/r/20251007220349.3852807-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull more i2c updates from Wolfram Sang:
- Second part of rtl9300 updates since dependencies are in now:
- general cleanups
- implement block read/write support
- add RTL9310 support
- DT schema conversion of hix5hd2 binding
- namespace cleanup for i2c-algo-pca
- minor simplification for mt65xx
* tag 'i2c-for-6.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
dt-bindings: i2c: hisilicon,hix5hd2: convert to DT schema
i2c: mt65xx: convert set_speed function to void
i2c: rename wait_for_completion callback to wait_for_completion_cb
i2c: rtl9300: add support for RTL9310 I2C controller
dt-bindings: i2c: realtek,rtl9301-i2c: extend for RTL9310 support
i2c: rtl9300: use scoped guard instead of explicit lock/unlock
i2c: rtl9300: separate xfer configuration and execution
i2c: rtl9300: do not set read mode on every transfer
i2c: rtl9300: move setting SCL frequency to config_io
i2c: rtl9300: rename internal sda_pin to sda_num
dt-bindings: i2c: realtek,rtl9301-i2c: fix wording and typos
i2c: rtl9300: use regmap fields and API for registers
i2c: rtl9300: Implement I2C block read and write
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The current shenanigans for duration calculation introduce too much
complexity for a trivial problem, and further the code is hard to patch and
maintain.
Address these issues with a flat look-up table, which is easy to understand
and patch. If leaf driver specific patching is required in future, it is
easy enough to make a copy of this table during driver initialization and
add the chip parameter back.
'chip->duration' is retained for TPM 1.x.
As the first entry for this new behavior address TCG spec update mentioned
in this issue:
https://github.com/raspberrypi/linux/issues/7054
Therefore, for TPM_SelfTest the duration is set to 3000 ms.
This does not categorize a as bug, given that this is introduced to the
spec after the feature was originally made.
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter.
Current release - regressions:
- mlx5: fix pre-2.40 binutils assembler error
Current release - new code bugs:
- net: psp: don't assume reply skbs will have a socket
- eth: fbnic: fix missing programming of the default descriptor
Previous releases - regressions:
- page_pool: fix PP_MAGIC_MASK to avoid crashing on some 32-bit arches
- tcp:
- take care of zero tp->window_clamp in tcp_set_rcvlowat()
- don't call reqsk_fastopen_remove() in tcp_conn_request()
- eth:
- ice: release xa entry on adapter allocation failure
- usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock
Previous releases - always broken:
- netfilter: validate objref and objrefmap expressions
- sctp: fix a null dereference in sctp_disposition sctp_sf_do_5_1D_ce()
- eth:
- mlx4: prevent potential use after free in mlx4_en_do_uc_filter()
- mlx5: prevent tunnel mode conflicts between FDB and NIC IPsec tables
- ocelot: fix use-after-free caused by cyclic delayed work
Misc:
- add support for MediaTek PCIe 5G HP DRMR-H01"
* tag 'net-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (38 commits)
net: airoha: Fix loopback mode configuration for GDM2 port
selftests: drv-net: pp_alloc_fail: add necessary optoins to config
selftests: drv-net: pp_alloc_fail: lower traffic expectations
selftests: drv-net: fix linter warnings in pp_alloc_fail
eth: fbnic: fix reporting of alloc_failed qstats
selftests: drv-net: xdp: add test for interface level qstats
selftests: drv-net: xdp: rename netnl to ethnl
eth: fbnic: fix saving stats from XDP_TX rings on close
eth: fbnic: fix accounting of XDP packets
eth: fbnic: fix missing programming of the default descriptor
selftests: netfilter: query conntrack state to check for port clash resolution
selftests: netfilter: nft_fib.sh: fix spurious test failures
bridge: br_vlan_fill_forward_path_pvid: use br_vlan_group_rcu()
netfilter: nft_objref: validate objref and objrefmap expressions
net: pse-pd: tps23881: Fix current measurement scaling
net/mlx5: fix pre-2.40 binutils assembler error
net/mlx5e: Do not fail PSP init on missing caps
net/mlx5e: Prevent tunnel reformat when tunnel mode not allowed
net/mlx5: Prevent tunnel mode conflicts between FDB and NIC IPsec tables
net: usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock
...
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This pointer is in a register anyway, so let's use that instead of
reloading from memory everywhere.
[ idryomov: formatting ]
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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The caller in messenger_v1.c loads it anyway, so let's keep the
pointer in the register instead of reloading it from memory. This
eliminates a tiny bit of unnecessary overhead.
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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Use the HMAC-SHA256 library functions instead of crypto_shash. This is
simpler and faster.
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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Pull more VFIO updates from Alex Williamson:
- Optimizations for DMA map and unmap opertions through the type1 vfio
IOMMU backend.
This uses various means of batching and hints from the mm structures
to improve efficiency and therefore performance, resulting in a
significant speedup for huge page use cases (Li Zhe)
- Expose supported device migration features through debugfs (Cédric Le
Goater)
* tag 'vfio-v6.18-rc1-pt2' of https://github.com/awilliam/linux-vfio:
vfio: Dump migration features under debugfs
vfio/type1: optimize vfio_unpin_pages_remote()
vfio/type1: introduce a new member has_rsvd for struct vfio_dma
vfio/type1: batch vfio_find_vpfn() in function vfio_unpin_pages_remote()
vfio/type1: optimize vfio_pin_pages_remote()
mm: introduce num_pages_contiguous()
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
- Conversions to yaml/json schema and fixes for input-related device
tree bindings
- New drivers:
- Awinic AW86927 haptic chip
- Hynitron CST816x series controller
- Himax HX852x(ES) touchscreen controller
- Fix uinput to not leak kernel memory via a gap in
uinput_ff_upload_compat structure
- Prevent overflow in pressure calculation in tsc2007 driver causing
phantom touches
- Make the Atmel maxTouch driver support generic touchscreen
configuration (flip, rotate, etc)
- Drop support for platform data in tca8418_keypad, pxa27x-keypad,
spear-keyboard and twl4030_keypad drivers, they all now rely on
generic device properties for configuration
- Other assorted changes and fixes
* tag 'input-for-v6.18-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (50 commits)
Input: atmel_mxt_ts - allow reset GPIO to sleep
Input: aw86927 - fix error code in probe()
Input: psxpad-spi - add a check for the return value of spi_setup()
Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
Input: aw86927 - add driver for Awinic AW86927
dt-bindings: input: Add Awinic AW86927
dt-bindings: touchscreen: remove touchscreen.txt
dt-bindings: arm: bcm: raspberrypi,bcm2835-firmware: Add touchscreen child node
dt-bindings: touchscreen: convert eeti bindings to json schema
Input: pm8941-pwrkey - disable wakeup for resin by default
dt-bindings: input: pm8941-pwrkey: Document wakeup-source property
Input: add driver for Hynitron CST816x series
dt-bindings: input: touchscreen: add hynitron cst816x series
Input: imx6ul_tsc - set glitch threshold by DTS property
dt-bindings: touchscreen: fsl,imx6ul-tsc: support glitch thresold
dt-bindings: touchscreen: add debounce-delay-us property
Input: ps2-gpio - fix typo
Input: atmel_mxt_ts - add support for generic touchscreen configurations
dt-bindings: input: maxtouch: add common touchscreen properties
dt-bindings: touchscreen: convert zet6223 bindings to json schema
...
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syzkaller discovered the following crash: (kernel BUG)
[ 44.607039] ------------[ cut here ]------------
[ 44.607422] kernel BUG at mm/userfaultfd.c:2067!
[ 44.608148] Oops: invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN NOPTI
[ 44.608814] CPU: 1 UID: 0 PID: 2475 Comm: reproducer Not tainted 6.16.0-rc6 #1 PREEMPT(none)
[ 44.609635] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 44.610695] RIP: 0010:userfaultfd_release_all+0x3a8/0x460
<snip other registers, drop unreliable trace>
[ 44.617726] Call Trace:
[ 44.617926] <TASK>
[ 44.619284] userfaultfd_release+0xef/0x1b0
[ 44.620976] __fput+0x3f9/0xb60
[ 44.621240] fput_close_sync+0x110/0x210
[ 44.622222] __x64_sys_close+0x8f/0x120
[ 44.622530] do_syscall_64+0x5b/0x2f0
[ 44.622840] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 44.623244] RIP: 0033:0x7f365bb3f227
Kernel panics because it detects UFFD inconsistency during
userfaultfd_release_all(). Specifically, a VMA which has a valid pointer
to vma->vm_userfaultfd_ctx, but no UFFD flags in vma->vm_flags.
The inconsistency is caused in ksm_madvise(): when user calls madvise()
with MADV_UNMEARGEABLE on a VMA that is registered for UFFD in MINOR mode,
it accidentally clears all flags stored in the upper 32 bits of
vma->vm_flags.
Assuming x86_64 kernel build, unsigned long is 64-bit and unsigned int and
int are 32-bit wide. This setup causes the following mishap during the &=
~VM_MERGEABLE assignment.
VM_MERGEABLE is a 32-bit constant of type unsigned int, 0x8000'0000.
After ~ is applied, it becomes 0x7fff'ffff unsigned int, which is then
promoted to unsigned long before the & operation. This promotion fills
upper 32 bits with leading 0s, as we're doing unsigned conversion (and
even for a signed conversion, this wouldn't help as the leading bit is 0).
& operation thus ends up AND-ing vm_flags with 0x0000'0000'7fff'ffff
instead of intended 0xffff'ffff'7fff'ffff and hence accidentally clears
the upper 32-bits of its value.
Fix it by changing `VM_MERGEABLE` constant to unsigned long, using the
BIT() macro.
Note: other VM_* flags are not affected: This only happens to the
VM_MERGEABLE flag, as the other VM_* flags are all constants of type int
and after ~ operation, they end up with leading 1 and are thus converted
to unsigned long with leading 1s.
Note 2:
After commit 31defc3b01d9 ("userfaultfd: remove (VM_)BUG_ON()s"), this is
no longer a kernel BUG, but a WARNING at the same place:
[ 45.595973] WARNING: CPU: 1 PID: 2474 at mm/userfaultfd.c:2067
but the root-cause (flag-drop) remains the same.
[akpm@linux-foundation.org: rust bindgen wasn't able to handle BIT(), from Miguel]
Link: https://lore.kernel.org/oe-kbuild-all/202510030449.VfSaAjvd-lkp@intel.com/
Link: https://lkml.kernel.org/r/20251001090353.57523-2-acsjakub@amazon.de
Fixes: 7677f7fd8be7 ("userfaultfd: add minor fault registration mode")
Signed-off-by: Jakub Acs <acsjakub@amazon.de>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: SeongJae Park <sj@kernel.org>
Tested-by: Alice Ryhl <aliceryhl@google.com>
Tested-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Xu Xin <xu.xin16@zte.com.cn>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Peter Xu <peterx@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
Generally memcg charging is allowed from all the contexts including NMI
where even spinning on spinlock can cause locking issues. However one
call chain was missed during the addition of memcg charging from any
context support. That is try_charge_memcg() -> memcg_memory_event() ->
cgroup_file_notify().
The possible function call tree under cgroup_file_notify() can acquire
many different spin locks in spinning mode. Some of them are
cgroup_file_kn_lock, kernfs_notify_lock, pool_workqeue's lock. So, let's
just skip cgroup_file_notify() from memcg charging if the context does not
allow spinning.
Alternative approach was also explored where instead of skipping
cgroup_file_notify(), we defer the memcg event processing to irq_work [1].
However it adds complexity and it was decided to keep things simple until
we need more memcg events with !allow_spinning requirement.
Link: https://lore.kernel.org/all/5qi2llyzf7gklncflo6gxoozljbm4h3tpnuv4u4ej4ztysvi6f@x44v7nz2wdzd/ [1]
Link: https://lkml.kernel.org/r/20250922220203.261714-1-shakeel.butt@linux.dev
Fixes: 3ac4638a734a ("memcg: make memcg_rstat_updated nmi safe")
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Closes: https://lore.kernel.org/all/20250905061919.439648-1-yepeilin@google.com/
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Peilin Ye <yepeilin@google.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
A vmalloc allocation is preserved using binary structure similar to global
KHO memory tracker. It's a linked list of pages where each page is an
array of physical address of pages in vmalloc area.
kho_preserve_vmalloc() hands out the physical address of the head page to
the caller. This address is used as the argument to kho_vmalloc_restore()
to restore the mapping in the vmalloc address space and populate it with
the preserved pages.
[pasha.tatashin@soleen.com: free chunks using free_page() not kfree()]
Link: https://lkml.kernel.org/r/mafs0a52idbeg.fsf@kernel.org
[akpm@linux-foundation.org: coding-style cleanups]
Link: https://lkml.kernel.org/r/20250921054458.4043761-4-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Changyuan Lyu <changyuanl@google.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
to make it clear that KHO operates on pages rather than on a random
physical address.
The kho_preserve_pages() will be also used in upcoming support for vmalloc
preservation.
Link: https://lkml.kernel.org/r/20250921054458.4043761-3-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Cc: Alexander Graf <graf@amazon.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Changyuan Lyu <changyuanl@google.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These are cpufreq fixes and cleanups on top of the material merged
previously, a power management core code fix and updates of the
runtime PM framework including unit tests, documentation updates and
introduction of auto-cleanup macros for runtime PM "resume and get"
and "get without resuming" operations.
Specifics:
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6
cycle that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency()
to indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
- Make pm_runtime_put*() family of functions return 1 when the given
device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update
return values in kerneldoc comments for the runtime PM API (Brian
Norris, Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)"
* tag 'pm-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
docs/zh_CN: Fix malformed table
docs/zh_TW: Fix malformed table
PM: runtime: Fix error checking for kunit_device_register()
PM: runtime: Introduce one more usage counter guard
cpufreq: Drop unused symbol CPUFREQ_ETERNAL
ACPI: CPPC: Do not use CPUFREQ_ETERNAL as an error value
cpufreq: CPPC: Avoid using CPUFREQ_ETERNAL as transition delay
cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency
PM: runtime: Drop DEFINE_FREE() for pm_runtime_put()
PCI/sysfs: Use runtime PM guard macro for auto-cleanup
PM: runtime: Add auto-cleanup macros for "resume and get" operations
cpufreq: tegra186: Initialize all cores to max frequencies
cpufreq: tegra186: Set target frequency for all cpus in policy
rust: cpufreq: streamline find_supply_names
cpufreq: mediatek: fix device leak on probe failure
PM: sleep: Do not wait on SYNC_STATE_ONLY device links
PM: runtime: Update kerneldoc return codes
PM: runtime: Make put{,_sync}() return 1 when already suspended
PM: runtime: Add basic kunit tests for API contracts
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"There's a bunch of patches here across drivers/clk/ to migrate drivers
to use struct clk_ops::determine_rate() instead of the round_rate()
one so that we can remove the round_rate clk_op entirely. Brian has
taken up that task which nobody else has wanted to do for close to a
decade. Thanks Brian!
This is all prerequisite work to get to the real task of improving the
clk rate setting process. Once we have determine_rate() used
everywhere, we'll be able to do things like chain the rate request
structs in linked lists to order the rate setting operations or add
more parameters without having to change every clk driver in
existence. It's also nice to not have multiple ways to do something
which just causes confusion for clk driver authors. Overall I'm glad
this is getting done.
Beyond this change we also have a tweak to the clk_lookup() function
in the core framework to use hashing on the clk name instead of a clk
tree walk with string comparisons. We _still_ rely on the clk name to
be unique, because historically we've used globally unique strings to
describe the clk tree topology. This tree walk becomes increasingly
slow as more clks are added to the system. Searching from the roots
for a duplicate is simple but pretty dumb and it wastes boot time so
we're using a hash table as an improvement. Ideally we wouldn't rely
on the strings to be unique at all, relegating them to simply debug
information, but that is future work that will likely require some
sort of Kconfig knob indicating strings aren't used for topology
description.
Outside of the core framework changes we have the usual new SoC
support and fixes to clk drivers for things that were discovered once
the clks were used by consumer drivers. Nothing in particular is
jumping out at me in the "misc" pile, except maybe the Amlogic driver
that has gone through a refactoring. That series got a fix from
testing in -next though so it seems likely that things have been
getting good test coverage for a couple weeks already"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (299 commits)
clk: microchip: core: remove duplicate roclk_determine_rate()
reset: aspeed: register AST2700 reset auxiliary bus device
dt-bindings: clock: ast2700: modify soc0/1 clock define
clk: tegra: do not overallocate memory for bpmp clocks
clk: ep93xx: Use int type to store negative error codes
clk: nxp: Fix pll0 rate check condition in LPC18xx CGU driver
clk: loongson2: Add clock definitions for Loongson-2K0300 SoC
clk: loongson2: Avoid hardcoding firmware name of the reference clock
clk: loongson2: Allow zero divisors for dividers
clk: loongson2: Support scale clocks with an alternative mode
clk: loongson2: Allow specifying clock flags for gate clock
dt-bindings: clock: loongson2: Add Loongson-2K0300 compatible
clk: clocking-wizard: Fix output clock register offset for Versal platforms
clk: xilinx: Optimize divisor search in clk_wzrd_get_divisors_ver()
clk: mmp: pxa1908: Instantiate power driver through auxiliary bus
clk: s2mps11: add support for S2MPG10 PMIC clock
dt-bindings: clock: samsung,s2mps11: add s2mpg10
dt-bindings: stm32: cosmetic fixes for STM32MP25 clock and reset bindings
clk: stm32: introduce clocks for STM32MP21 platform
dt-bindings: stm32: add STM32MP21 clocks and reset bindings
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Unify guest entry code for KVM and MSHV (Sean Christopherson)
- Switch Hyper-V MSI domain to use msi_create_parent_irq_domain()
(Nam Cao)
- Add CONFIG_HYPERV_VMBUS and limit the semantics of CONFIG_HYPERV
(Mukesh Rathor)
- Add kexec/kdump support on Azure CVMs (Vitaly Kuznetsov)
- Deprecate hyperv_fb in favor of Hyper-V DRM driver (Prasanna
Kumar T S M)
- Miscellaneous enhancements, fixes and cleanups (Abhishek Tiwari,
Alok Tiwari, Nuno Das Neves, Wei Liu, Roman Kisel, Michael Kelley)
* tag 'hyperv-next-signed-20251006' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
hyperv: Remove the spurious null directive line
MAINTAINERS: Mark hyperv_fb driver Obsolete
fbdev/hyperv_fb: deprecate this in favor of Hyper-V DRM driver
Drivers: hv: Make CONFIG_HYPERV bool
Drivers: hv: Add CONFIG_HYPERV_VMBUS option
Drivers: hv: vmbus: Fix typos in vmbus_drv.c
Drivers: hv: vmbus: Fix sysfs output format for ring buffer index
Drivers: hv: vmbus: Clean up sscanf format specifier in target_cpu_store()
x86/hyperv: Switch to msi_create_parent_irq_domain()
mshv: Use common "entry virt" APIs to do work in root before running guest
entry: Rename "kvm" entry code assets to "virt" to genericize APIs
entry/kvm: KVM: Move KVM details related to signal/-EINTR into KVM proper
mshv: Handle NEED_RESCHED_LAZY before transferring to guest
x86/hyperv: Add kexec/kdump support on Azure CVMs
Drivers: hv: Simplify data structures for VMBus channel close message
Drivers: hv: util: Cosmetic changes for hv_utils_transport.c
mshv: Add support for a new parent partition configuration
clocksource: hyper-v: Skip unnecessary checks for the root partition
hyperv: Add missing field to hv_output_map_device_interrupt
|
|
Keep bio_iov_iter_get_bdev_pages local with the callers, as blindly
looking at the bdev logical block size is often not the best idea
unless on a block device.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Now that the bio_iov_iter_get_pages is free again, use it instead of
the more complicated now. Also drop the unused export.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Switch the only caller to bio_iov_iter_get_pages, and explain why it does
not have any alignment requirements.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
|
Merge cpufreq fixes and cleanups, mostly on top of those fixes, for
6.18-rc1:
- Make cpufreq drivers setting the default CPU transition latency to
CPUFREQ_ETERNAL specify a proper default transition latency value
instead which addresses a regression introduced during the 6.6 cycle
that broke CPUFREQ_ETERNAL handling (Rafael Wysocki)
- Make the cpufreq CPPC driver use a proper transition delay value
when CPUFREQ_ETERNAL is returned by cppc_get_transition_latency() to
indicate an error condition (Rafael Wysocki)
- Make cppc_get_transition_latency() return a negative error code to
indicate error conditions instead of using CPUFREQ_ETERNAL for this
purpose and drop CPUFREQ_ETERNAL that has no other users (Rafael
Wysocki, Gopi Krishna Menon)
- Fix device leak in the mediatek cpufreq driver (Johan Hovold)
- Set target frequency on all CPUs sharing a policy during frequency
updates in the tegra186 cpufreq driver and make it initialize all
cores to max frequencies (Aaron Kling)
- Rust cpufreq helper cleanup (Thorsten Blum)
* pm-cpufreq:
docs/zh_CN: Fix malformed table
docs/zh_TW: Fix malformed table
cpufreq: Drop unused symbol CPUFREQ_ETERNAL
ACPI: CPPC: Do not use CPUFREQ_ETERNAL as an error value
cpufreq: CPPC: Avoid using CPUFREQ_ETERNAL as transition delay
cpufreq: Make drivers using CPUFREQ_ETERNAL specify transition latency
cpufreq: tegra186: Initialize all cores to max frequencies
cpufreq: tegra186: Set target frequency for all cpus in policy
rust: cpufreq: streamline find_supply_names
cpufreq: mediatek: fix device leak on probe failure
|
|
Merge runtime PM framework updates and a core power management code fix
for 6.18-rc1:
- Make pm_runtime_put*() family of functions return 1 when the
given device is already suspended which is consistent with the
documentation (Brian Norris)
- Add basic kunit tests for runtime PM API contracts and update return
values in kerneldoc coments for the runtime PM API (Brian Norris,
Dan Carpenter)
- Add auto-cleanup macros for runtime PM "resume and get" and "get
without resume" operations, use one of them in the PCI core and
drop the existing "free" macro introduced for similar purpose, but
somewhat cumbersome to use (Rafael Wysocki)
- Make the core power management code avoid waiting on device links
marked as SYNC_STATE_ONLY which is consistent with the handling of
those device links elsewhere (Pin-yen Lin)
* pm-core:
PM: sleep: Do not wait on SYNC_STATE_ONLY device links
* pm-runtime:
PM: runtime: Fix error checking for kunit_device_register()
PM: runtime: Introduce one more usage counter guard
PM: runtime: Drop DEFINE_FREE() for pm_runtime_put()
PCI/sysfs: Use runtime PM guard macro for auto-cleanup
PM: runtime: Add auto-cleanup macros for "resume and get" operations
PM: runtime: Update kerneldoc return codes
PM: runtime: Make put{,_sync}() return 1 when already suspended
PM: runtime: Add basic kunit tests for API contracts
|
|
Pull nfsd updates from Chuck Lever:
"Mike Snitzer has prototyped a mechanism for disabling I/O caching in
NFSD. This is introduced in v6.18 as an experimental feature. This
enables scaling NFSD in /both/ directions:
- NFS service can be supported on systems with small memory
footprints, such as low-cost cloud instances
- Large NFS workloads will be less likely to force the eviction of
server-local activity, helping it avoid thrashing
Jeff Layton contributed a number of fixes to the new attribute
delegation implementation (based on a pending Internet RFC) that we
hope will make attribute delegation reliable enough to enable by
default, as it is on the Linux NFS client.
The remaining patches in this pull request are clean-ups and minor
optimizations. Many thanks to the contributors, reviewers, testers,
and bug reporters who participated during the v6.18 NFSD development
cycle"
* tag 'nfsd-6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (42 commits)
nfsd: discard nfserr_dropit
SUNRPC: Make RPCSEC_GSS_KRB5 select CRYPTO instead of depending on it
NFSD: Add io_cache_{read,write} controls to debugfs
NFSD: Do the grace period check in ->proc_layoutget
nfsd: delete unnecessary NULL check in __fh_verify()
NFSD: Allow layoutcommit during grace period
NFSD: Disallow layoutget during grace period
sunrpc: fix "occurence"->"occurrence"
nfsd: Don't force CRYPTO_LIB_SHA256 to be built-in
nfsd: nfserr_jukebox in nlm_fopen should lead to a retry
NFSD: Reduce DRC bucket size
NFSD: Delay adding new entries to LRU
SUNRPC: Move the svc_rpcb_cleanup() call sites
NFS: Remove rpcbind cleanup for NFSv4.0 callback
nfsd: unregister with rpcbind when deleting a transport
NFSD: Drop redundant conversion to bool
sunrpc: eliminate return pointer in svc_tcp_sendmsg()
sunrpc: fix pr_notice in svc_tcp_sendto() to show correct length
nfsd: decouple the xprtsec policy check from check_nfsd_access()
NFSD: Fix destination buffer size in nfsd4_ssc_setup_dul()
...
|
|
Pull x86 kvm updates from Paolo Bonzini:
"Generic:
- Rework almost all of KVM's exports to expose symbols only to KVM's
x86 vendor modules (kvm-{amd,intel}.ko and PPC's kvm-{pr,hv}.ko
x86:
- Rework almost all of KVM x86's exports to expose symbols only to
KVM's vendor modules, i.e. to kvm-{amd,intel}.ko
- Add support for virtualizing Control-flow Enforcement Technology
(CET) on Intel (Shadow Stacks and Indirect Branch Tracking) and AMD
(Shadow Stacks).
It is worth noting that while SHSTK and IBT can be enabled
separately in CPUID, it is not really possible to virtualize them
separately. Therefore, Intel processors will really allow both
SHSTK and IBT under the hood if either is made visible in the
guest's CPUID. The alternative would be to intercept
XSAVES/XRSTORS, which is not feasible for performance reasons
- Fix a variety of fuzzing WARNs all caused by checking L1 intercepts
when completing userspace I/O. KVM has already committed to
allowing L2 to to perform I/O at that point
- Emulate PERF_CNTR_GLOBAL_STATUS_SET for PerfMonV2 guests, as the
MSR is supposed to exist for v2 PMUs
- Allow Centaur CPU leaves (base 0xC000_0000) for Zhaoxin CPUs
- Add support for the immediate forms of RDMSR and WRMSRNS, sans full
emulator support (KVM should never need to emulate the MSRs outside
of forced emulation and other contrived testing scenarios)
- Clean up the MSR APIs in preparation for CET and FRED
virtualization, as well as mediated vPMU support
- Clean up a pile of PMU code in anticipation of adding support for
mediated vPMUs
- Reject in-kernel IOAPIC/PIT for TDX VMs, as KVM can't obtain EOI
vmexits needed to faithfully emulate an I/O APIC for such guests
- Many cleanups and minor fixes
- Recover possible NX huge pages within the TDP MMU under read lock
to reduce guest jitter when restoring NX huge pages
- Return -EAGAIN during prefault if userspace concurrently
deletes/moves the relevant memslot, to fix an issue where
prefaulting could deadlock with the memslot update
x86 (AMD):
- Enable AVIC by default for Zen4+ if x2AVIC (and other prereqs) is
supported
- Require a minimum GHCB version of 2 when starting SEV-SNP guests
via KVM_SEV_INIT2 so that invalid GHCB versions result in immediate
errors instead of latent guest failures
- Add support for SEV-SNP's CipherText Hiding, an opt-in feature that
prevents unauthorized CPU accesses from reading the ciphertext of
SNP guest private memory, e.g. to attempt an offline attack. This
feature splits the shared SEV-ES/SEV-SNP ASID space into separate
ranges for SEV-ES and SEV-SNP guests, therefore a new module
parameter is needed to control the number of ASIDs that can be used
for VMs with CipherText Hiding vs. how many can be used to run
SEV-ES guests
- Add support for Secure TSC for SEV-SNP guests, which prevents the
untrusted host from tampering with the guest's TSC frequency, while
still allowing the the VMM to configure the guest's TSC frequency
prior to launch
- Validate the XCR0 provided by the guest (via the GHCB) to avoid
bugs resulting from bogus XCR0 values
- Save an SEV guest's policy if and only if LAUNCH_START fully
succeeds to avoid leaving behind stale state (thankfully not
consumed in KVM)
- Explicitly reject non-positive effective lengths during SNP's
LAUNCH_UPDATE instead of subtly relying on guest_memfd to deal with
them
- Reload the pre-VMRUN TSC_AUX on #VMEXIT for SEV-ES guests, not the
host's desired TSC_AUX, to fix a bug where KVM was keeping a
different vCPU's TSC_AUX in the host MSR until return to userspace
KVM (Intel):
- Preparation for FRED support
- Don't retry in TDX's anti-zero-step mitigation if the target
memslot is invalid, i.e. is being deleted or moved, to fix a
deadlock scenario similar to the aforementioned prefaulting case
- Misc bugfixes and minor cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (142 commits)
KVM: x86: Export KVM-internal symbols for sub-modules only
KVM: x86: Drop pointless exports of kvm_arch_xxx() hooks
KVM: x86: Move kvm_intr_is_single_vcpu() to lapic.c
KVM: Export KVM-internal symbols for sub-modules only
KVM: s390/vfio-ap: Use kvm_is_gpa_in_memslot() instead of open coded equivalent
KVM: VMX: Make CR4.CET a guest owned bit
KVM: selftests: Verify MSRs are (not) in save/restore list when (un)supported
KVM: selftests: Add coverage for KVM-defined registers in MSRs test
KVM: selftests: Add KVM_{G,S}ET_ONE_REG coverage to MSRs test
KVM: selftests: Extend MSRs test to validate vCPUs without supported features
KVM: selftests: Add support for MSR_IA32_{S,U}_CET to MSRs test
KVM: selftests: Add an MSR test to exercise guest/host and read/write
KVM: x86: Define AMD's #HV, #VC, and #SX exception vectors
KVM: x86: Define Control Protection Exception (#CP) vector
KVM: x86: Add human friendly formatting for #XM, and #VE
KVM: SVM: Enable shadow stack virtualization for SVM
KVM: SEV: Synchronize MSR_IA32_XSS from the GHCB when it's valid
KVM: SVM: Pass through shadow stack MSRs as appropriate
KVM: SVM: Update dump_vmcb with shadow stack save area additions
KVM: nSVM: Save/load CET Shadow Stack state to/from vmcb12/vmcb02
...
|
|
Helge reported that the introduction of PP_MAGIC_MASK let to crashes on
boot on his 32-bit parisc machine. The cause of this is the mask is set
too wide, so the page_pool_page_is_pp() incurs false positives which
crashes the machine.
Just disabling the check in page_pool_is_pp() will lead to the page_pool
code itself malfunctioning; so instead of doing this, this patch changes
the define for PP_DMA_INDEX_BITS to avoid mistaking arbitrary kernel
pointers for page_pool-tagged pages.
The fix relies on the kernel pointers that alias with the pp_magic field
always being above PAGE_OFFSET. With this assumption, we can use the
lowest bit of the value of PAGE_OFFSET as the upper bound of the
PP_DMA_INDEX_MASK, which should avoid the false positives.
Because we cannot rely on PAGE_OFFSET always being a compile-time
constant, nor on it always being >0, we fall back to disabling the
dma_index storage when there are not enough bits available. This leaves
us in the situation we were in before the patch in the Fixes tag, but
only on a subset of architecture configurations. This seems to be the
best we can do until the transition to page types in complete for
page_pool pages.
v2:
- Make sure there's at least 8 bits available and that the PAGE_OFFSET
bit calculation doesn't wrap
Link: https://lore.kernel.org/all/aMNJMFa5fDalFmtn@p100/
Fixes: ee62ce7a1d90 ("page_pool: Track DMA-mapped pages and unmap them when destroying the pool")
Cc: stable@vger.kernel.org # 6.15+
Tested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Tested-by: Helge Deller <deller@gmx.de>
Link: https://patch.msgid.link/20250930114331.675412-1-toke@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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* clk-determine-rate: (120 commits)
clk: microchip: core: remove duplicate roclk_determine_rate()
clk: nxp: Fix pll0 rate check condition in LPC18xx CGU driver
clk: scmi: migrate round_rate() to determine_rate()
clk: ti: fapll: convert from round_rate() to determine_rate()
clk: ti: dra7-atl: convert from round_rate() to determine_rate()
clk: ti: divider: convert from round_rate() to determine_rate()
clk: ti: composite: convert from round_rate() to determine_rate()
clk: ti: dpll: convert from round_rate() to determine_rate()
clk: ti: dpll: change error return from ~0 to -EINVAL
clk: ti: dpll: remove round_rate() in favor of determine_rate()
clk: tegra: tegra210-emc: convert from round_rate() to determine_rate()
clk: tegra: super: convert from round_rate() to determine_rate()
clk: tegra: pll: convert from round_rate() to determine_rate()
clk: tegra: periph: divider: convert from round_rate() to determine_rate()
clk: tegra: divider: convert from round_rate() to determine_rate()
clk: tegra: audio-sync: convert from round_rate() to determine_rate()
clk: fixed-factor: drop round_rate() clk ops
clk: divider: remove round_rate() in favor of determine_rate()
clk: visconti: pll: convert from round_rate() to determine_rate()
clk: versatile: vexpress-osc: convert from round_rate() to determine_rate()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Add PCI_FIND_NEXT_CAP() and PCI_FIND_NEXT_EXT_CAP() macros that
take config space accessor functions.
Implement pci_find_capability(), pci_find_ext_capability(), and
dwc, dwc endpoint, and cadence capability search interfaces with
them (Hans Zhang)
- Leave parent unit address 0 in 'interrupt-map' so that when we
build devicetree nodes to describe PCI functions that contain
multiple peripherals, we can build this property even when
interrupt controllers lack 'reg' properties (Lorenzo Pieralisi)
- Add a Xeon 6 quirk to disable Extended Tags and limit Max Read
Request Size to 128B to avoid a performance issue (Ilpo Järvinen)
- Add sysfs 'serial_number' file to expose the Device Serial Number
(Matthew Wood)
- Fix pci_acpi_preserve_config() memory leak (Nirmoy Das)
Resource management:
- Align m68k pcibios_enable_device() with other arches (Ilpo
Järvinen)
- Remove sparc pcibios_enable_device() implementations that don't do
anything beyond what pci_enable_resources() does (Ilpo Järvinen)
- Remove mips pcibios_enable_resources() and use
pci_enable_resources() instead (Ilpo Järvinen)
- Clean up bridge window sizing and assignment (Ilpo Järvinen),
including:
- Leave non-claimed bridge windows disabled
- Enable bridges even if a window wasn't assigned because not all
windows are required by downstream devices
- Preserve bridge window type when releasing the resource, since
the type is needed for reassignment
- Consolidate selection of bridge windows into two new
interfaces, pbus_select_window() and
pbus_select_window_for_type(), so this is done consistently
- Compute bridge window start and end earlier to avoid logging
stale information
MSI:
- Add quirk to disable MSI on RDC PCI to PCIe bridges (Marcos Del Sol
Vives)
Error handling:
- Align AER with EEH by allowing drivers to request a Bus Reset on
Non-Fatal Errors (in addition to the reset on Fatal Errors that we
already do) (Lukas Wunner)
- If error recovery fails, emit FAILED_RECOVERY uevents for the
devices, not for the bridge leading to them.
This makes them correspond to BEGIN_RECOVERY uevents (Lukas Wunner)
- Align AER with EEH by calling err_handler.error_detected()
callbacks to notify drivers if error recovery fails (Lukas Wunner)
- Align AER with EEH by restoring device error_state to
pci_channel_io_normal before the err_handler.slot_reset() callback.
This is earlier than before the err_handler.resume() callback
(Lukas Wunner)
- Emit a BEGIN_RECOVERY uevent when driver's
err_handler.error_detected() requests a reset, as well as when it
says recovery is complete or can be done without a reset (Niklas
Schnelle)
- Align s390 with AER and EEH by emitting uevents during error
recovery (Niklas Schnelle)
- Align EEH with AER and s390 by emitting BEGIN_RECOVERY,
SUCCESSFUL_RECOVERY, or FAILED_RECOVERY uevents depending on the
result of err_handler.error_detected() (Niklas Schnelle)
- Fix a NULL pointer dereference in aer_ratelimit() when ACPI GHES
error information identifies a device without an AER Capability
(Breno Leitao)
- Update error decoding and TLP Log printing for new errors in
current PCIe base spec (Lukas Wunner)
- Update error recovery documentation to match the current code
and use consistent nomenclature (Lukas Wunner)
ASPM:
- Enable all ClockPM and ASPM states for devicetree platforms, since
there's typically no firmware that enables ASPM
This is a risky change that may uncover hardware or configuration
defects at boot-time rather than when users enable ASPM via sysfs
later. Booting with "pcie_aspm=off" prevents this enabling
(Manivannan Sadhasivam)
- Remove the qcom code that enabled ASPM (Manivannan Sadhasivam)
Power management:
- If a device has already been disconnected, e.g., by a hotplug
removal, don't bother trying to resume it to D0 when detaching the
driver.
This avoids annoying "Unable to change power state from D3cold to
D0" messages (Mario Limonciello)
- Ensure devices are powered up before config reads for
'max_link_width', 'current_link_speed', 'current_link_width',
'secondary_bus_number', and 'subordinate_bus_number' sysfs files.
This prevents using invalid data (~0) in drivers or lspci and,
depending on how the PCIe controller reports errors, may avoid
error interrupts or crashes (Brian Norris)
Virtualization:
- Add rescan/remove locking when enabling/disabling SR-IOV, which
avoids list corruption on s390, where disabling SR-IOV also
generates hotplug events (Niklas Schnelle)
Peer-to-peer DMA:
- Free struct p2p_pgmap, not a member within it, in the
pci_p2pdma_add_resource() error path (Sungho Kim)
Endpoint framework:
- Document sysfs interface for BAR assignment of vNTB endpoint
functions (Jerome Brunet)
- Fix array underflow in endpoint BAR test case (Dan Carpenter)
- Skip endpoint IRQ test if the IRQ is out of range to avoid false
errors (Christian Bruel)
- Fix endpoint test case for controllers with fixed-size BARs smaller
than requested by the test (Marek Vasut)
- Restore inbound translation when disabling doorbell so the endpoint
doorbell test case can be run more than once (Niklas Cassel)
- Avoid a NULL pointer dereference when releasing DMA channels in
endpoint DMA test case (Shin'ichiro Kawasaki)
- Convert tegra194 interrupt number to MSI vector to fix endpoint
Kselftest MSI_TEST test case (Niklas Cassel)
- Reset tegra194 BARs when running in endpoint mode so the BAR tests
don't overwrite the ATU settings in BAR4 (Niklas Cassel)
- Handle errors in tegra194 BPMP transactions so we don't mistakenly
skip future PERST# assertion (Vidya Sagar)
AMD MDB PCIe controller driver:
- Update DT binding example to separate PERST# to a Root Port stanza
to make multiple Root Ports possible in the future (Sai Krishna
Musham)
- Add driver support for PERST# being described in a Root Port
stanza, falling back to the host bridge if not found there (Sai
Krishna Musham)
Freescale i.MX6 PCIe controller driver:
- Enable the 3.3V Vaux supply if available so devices can request
wakeup with either Beacon or WAKE# (Richard Zhu)
MediaTek PCIe Gen3 controller driver:
- Add optional sys clock ready time setting to avoid sys_clk_rdy
signal glitching in MT6991 and MT8196 (AngeloGioacchino Del Regno)
- Add DT binding and driver support for MT6991 and MT8196
(AngeloGioacchino Del Regno)
NVIDIA Tegra PCIe controller driver:
- When asserting PERST#, disable the controller instead of mistakenly
disabling the PLL twice (Nagarjuna Kristam)
- Convert struct tegra_msi mask_lock to raw spinlock to avoid a lock
nesting error (Marek Vasut)
Qualcomm PCIe controller driver:
- Select PCI Power Control Slot driver so slot voltage rails can be
turned on/off if described in Root Port devicetree node (Qiang Yu)
- Parse only PCI bridge child nodes in devicetree, skipping unrelated
nodes such as OPP (Operating Performance Points), which caused
probe failures (Krishna Chaitanya Chundru)
- Add 8.0 GT/s and 32.0 GT/s equalization settings (Ziyue Zhang)
- Consolidate Root Port 'phy' and 'reset' properties in struct
qcom_pcie_port, regardless of whether we got them from the Root
Port node or the host bridge node (Manivannan Sadhasivam)
- Fetch and map the ELBI register space in the DWC core rather than
in each driver individually (Krishna Chaitanya Chundru)
- Enable ECAM mechanism in DWC core by setting up iATU with 'CFG
Shift Feature' and use this in the qcom driver (Krishna Chaitanya
Chundru)
- Add SM8750 compatible to qcom,pcie-sm8550.yaml (Krishna Chaitanya
Chundru)
- Update qcom,pcie-x1e80100.yaml to allow fifth PCIe host on Qualcomm
Glymur, which is compatible with X1E80100 but doesn't have the
cnoc_sf_axi clock (Qiang Yu)
Renesas R-Car PCIe controller driver:
- Fix a typo that prevented correct PHY initialization (Marek Vasut)
- Add a missing 1ms delay after PWR reset assertion as required by
the V4H manual (Marek Vasut)
- Assure reset has completed before DBI access to avoid SError (Marek
Vasut)
- Fix inverted PHY initialization check, which sometimes led to
timeouts and failure to start the controller (Marek Vasut)
- Pass the correct IRQ domain to generic_handle_domain_irq() to fix a
regression when converting to msi_create_parent_irq_domain()
(Claudiu Beznea)
- Drop the spinlock protecting the PMSR register - it's no longer
required since pci_lock already serializes accesses (Marek Vasut)
- Convert struct rcar_msi mask_lock to raw spinlock to avoid a lock
nesting error (Marek Vasut)
SOPHGO PCIe controller driver:
- Check for existence of struct cdns_pcie.ops before using it to
allow Cadence drivers that don't need to supply ops (Chen Wang)
- Add DT binding and driver for the SOPHGO SG2042 PCIe controller
(Chen Wang)
STMicroelectronics STM32MP25 PCIe controller driver:
- Update pinctrl documentation of initial states and use in runtime
suspend/resume (Christian Bruel)
- Add pinctrl_pm_select_init_state() for use by stm32 driver, which
needs it during resume (Christian Bruel)
- Add devicetree bindings and drivers for the STMicroelectronics
STM32MP25 in host and endpoint modes (Christian Bruel)
Synopsys DesignWare PCIe controller driver:
- Add support for x16 in devicetree 'num-lanes' property (Konrad
Dybcio)
- Verify that if DT specifies a single IRQ for all eDMA channels, it
is named 'dma' (Niklas Cassel)
TI J721E PCIe driver:
- Add MODULE_DEVICE_TABLE() so driver can be autoloaded (Siddharth
Vadapalli)
- Power controller off before configuring the glue layer so the
controller latches the correct values on power-on (Siddharth
Vadapalli)
TI Keystone PCIe controller driver:
- Use devm_request_irq() so 'ks-pcie-error-irq' is freed when driver
exits with error (Siddharth Vadapalli)
- Add Peripheral Virtualization Unit (PVU), which restricts DMA from
PCIe devices to specific regions of host memory, to the ti,am65
binding (Jan Kiszka)
Xilinx NWL PCIe controller driver:
- Clear bootloader E_ECAM_CONTROL before merging in the new driver
value to avoid writing invalid values (Jani Nurminen)"
* tag 'pci-v6.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (141 commits)
PCI/AER: Avoid NULL pointer dereference in aer_ratelimit()
MAINTAINERS: Add entry for ST STM32MP25 PCIe drivers
PCI: stm32-ep: Add PCIe Endpoint support for STM32MP25
dt-bindings: PCI: Add STM32MP25 PCIe Endpoint bindings
PCI: stm32: Add PCIe host support for STM32MP25
PCI: xilinx-nwl: Fix ECAM programming
PCI: j721e: Fix incorrect error message in probe()
PCI: keystone: Use devm_request_irq() to free "ks-pcie-error-irq" on exit
dt-bindings: PCI: qcom,pcie-x1e80100: Set clocks minItems for the fifth Glymur PCIe Controller
PCI: dwc: Support 16-lane operation
PCI: Add lockdep assertion in pci_stop_and_remove_bus_device()
PCI/IOV: Add PCI rescan-remove locking when enabling/disabling SR-IOV
PCI: rcar-host: Convert struct rcar_msi mask_lock into raw spinlock
PCI: tegra194: Rename 'root_bus' to 'root_port_bus' in tegra_pcie_downstream_dev_to_D0()
PCI: tegra: Convert struct tegra_msi mask_lock into raw spinlock
PCI: rcar-gen4: Fix inverted break condition in PHY initialization
PCI: rcar-gen4: Assure reset occurs before DBI access
PCI: rcar-gen4: Add missing 1ms delay after PWR reset assertion
PCI: Set up bridge resources earlier
PCI: rcar-host: Drop PMSR spinlock
...
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"A couple of new device support and small driver updates for this
round.
New support:
- Intel idxd Wildcat Lake family support
- SpacemiT K1 PDMA controller support
- Renesas RZ/G3E family support
Updates:
- Xilinx shutdown support and dma client properties update
- Designware edma callback_result support"
* tag 'dmaengine-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dt-bindings: dma: rz-dmac: Document RZ/G3E family of SoCs
dmaengine: dw-edma: Set status for callback_result
dmaengine: mv_xor: match alloc_wc and free_wc
dmaengine: mmp_pdma: Add SpacemiT K1 PDMA support with 64-bit addressing
dmaengine: mmp_pdma: Add operations structure for controller abstraction
dmaengine: mmp_pdma: Add reset controller support
dmaengine: mmp_pdma: Add clock support
dt-bindings: dma: Add SpacemiT K1 PDMA controller
dt-bindings: dmaengine: xilinx_dma: Remove DMA client properties
dmaengine: Fix dma_async_tx_descriptor->tx_submit documentation
dmaengine: xilinx_dma: Support descriptor setup from dma_vecs
dmaengine: sh: setup_xref error handling
dmaengine: Replace zero-length array with flexible-array
dmaengine: ppc4xx: Remove space before newline
dmaengine: idxd: Add a new IAA device ID for Wildcat Lake family platforms
dmaengine: idxd: Replace memset(0) + strscpy() with strscpy_pad()
dt-bindings: dma: nvidia,tegra20-apbdma: Add undocumented compatibles and "clock-names"
dmaengine: zynqmp_dma: Add shutdown operation support
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Let's add a simple helper for determining the number of contiguous pages
that represent contiguous PFNs.
In an ideal world, this helper would be simpler or not even required.
Unfortunately, on some configs we still have to maintain (SPARSEMEM
without VMEMMAP), the memmap is allocated per memory section, and we might
run into weird corner cases of false positives when blindly testing for
contiguous pages only.
One example of such false positives would be a memory section-sized hole
that does not have a memmap. The surrounding memory sections might get
"struct pages" that are contiguous, but the PFNs are actually not.
This helper will, for example, be useful for determining contiguous PFNs
in a GUP result, to batch further operations across returned "struct
page"s. VFIO will utilize this interface to accelerate the VFIO DMA map
process.
Implementation based on Linus' suggestions to avoid new usage of
nth_page() where avoidable.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Li Zhe <lizhe.67@bytedance.com>
Co-developed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20250814064714.56485-2-lizhe.67@bytedance.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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After commit 5402c4d4d200 ("exportfs: require ->fh_to_parent() to encode
connectable file handles") we will fail to create non-decodable file
handles for filesystems without export operations. Fix it.
Fixes: 5402c4d4d200 ("exportfs: require ->fh_to_parent() to encode connectable file handles")
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
"Only two patch series in this pull request:
- "mm/memory_hotplug: fixup crash during uevent handling" from Hannes
Reinecke fixes a race that was causing udev to trigger a crash in
the memory hotplug code
- "mm_slot: following fixup for usage of mm_slot_entry()" from Wei
Yang adds some touchups to the just-merged mm_slot changes"
* tag 'mm-stable-2025-10-03-16-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/khugepaged: use KMEM_CACHE()
mm/ksm: cleanup mm_slot_entry() invocation
Documentation/mm: drop pxx_mkdevmap() descriptions from page table helpers
mm: clean up is_guard_pte_marker()
drivers/base: move memory_block_add_nid() into the caller
mm/memory_hotplug: activate node before adding new memory blocks
drivers/base/memory: add node id parameter to add_memory_block()
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Use READ_ONCE() and WRITE_ONCE() instead of RCU for syscall
tracepoints
Individual system call trace events are pseudo events attached to the
raw_syscall trace events that just trace the entry and exit of all
system calls. When any of these individual system call trace events
get enabled, an element in an array indexed by the system call number
is assigned to the trace file that defines how to trace it. When the
trace event triggers, it reads this array and if the array has an
element, it uses that trace file to know what to write it (the trace
file defines the output format of the corresponding system call).
The issue is that it uses rcu_dereference_ptr() and marks the
elements of the array as using RCU. This is incorrect. There is no
RCU synchronization here. The event file that is pointed to has a
completely different way to make sure its freed properly. The reading
of the array during the system call trace event is only to know if
there is a value or not. If not, it does nothing (it means this
system call isn't being traced). If it does, it uses the information
to store the system call data.
The RCU usage here can simply be replaced by READ_ONCE() and
WRITE_ONCE() macros.
- Have the system call trace events use "0x" for hex values
Some system call trace events display hex values but do not have "0x"
in front of it. Seeing "count: 44" can be assumed that it is 44
decimal when in actuality it is 44 hex (68 decimal). Display "0x44"
instead.
- Use vmalloc_array() in tracing_map_sort_entries()
The function tracing_map_sort_entries() used array_size() and
vmalloc() when it could have simply used vmalloc_array().
- Use for_each_online_cpu() in trace_osnoise.c()
Instead of open coding for_each_cpu(cpu, cpu_online_mask), use
for_each_online_cpu().
- Move the buffer field in struct trace_seq to the end
The buffer field in struct trace_seq is architecture dependent in
size, and caused padding for the fields after it. By moving the
buffer to the end of the structure, it compacts the trace_seq
structure better.
- Remove redundant zeroing of cmdline_idx field in
saved_cmdlines_buffer()
The structure that contains cmdline_idx is zeroed by memset(), no
need to explicitly zero any of its fields after that.
- Use system_percpu_wq instead of system_wq in user_event_mm_remove()
As system_wq is being deprecated, use the new wq.
- Add cond_resched() is ftrace_module_enable()
Some modules have a lot of functions (thousands of them), and the
enabling of those functions can take some time. On non preemtable
kernels, it was triggering a watchdog timeout. Add a cond_resched()
to prevent that.
- Add a BUILD_BUG_ON() to make sure PID_MAX_DEFAULT is always a power
of 2
There's code that depends on PID_MAX_DEFAULT being a power of 2 or it
will break. If in the future that changes, make sure the build fails
to ensure that the code is fixed that depends on this.
- Grab mutex_lock() before ever exiting s_start()
The s_start() function is a seq_file start routine. As s_stop() is
always called even if s_start() fails, and s_stop() expects the
event_mutex to be held as it will always release it. That mutex must
always be taken in s_start() even if that function fails.
* tag 'trace-v6.18' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix lock imbalance in s_start() memory allocation failure path
tracing: Ensure optimized hashing works
ftrace: Fix softlockup in ftrace_module_enable
tracing: replace use of system_wq with system_percpu_wq
tracing: Remove redundant 0 value initialization
tracing: Move buffer in trace_seq to end of struct
tracing/osnoise: Use for_each_online_cpu() instead of for_each_cpu()
tracing: Use vmalloc_array() to improve code
tracing: Have syscall trace events show "0x" for values greater than 10
tracing: Replace syscall RCU pointer assignment with READ/WRITE_ONCE()
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Char/Misc/IIO/Binder updates from Greg KH:
"Here is the big set of char/misc/iio and other driver subsystem
changes for 6.18-rc1.
Loads of different stuff in here, it was a busy development cycle in
lots of different subsystems, with over 27k new lines added to the
tree.
Included in here are:
- IIO updates including new drivers, reworking of existing apis, and
other goodness in the sensor subsystems
- MEI driver updates and additions
- NVMEM driver updates
- slimbus removal for an unused driver and some other minor updates
- coresight driver updates and additions
- MHI driver updates
- comedi driver updates and fixes
- extcon driver updates
- interconnect driver additions
- eeprom driver updates and fixes
- minor UIO driver updates
- tiny W1 driver updates
But the majority of new code is in the rust bindings and additions,
which includes:
- misc driver rust binding updates for read/write support, we can now
write "normal" misc drivers in rust fully, and the sample driver
shows how this can be done.
- Initial framework for USB driver rust bindings, which are disabled
for now in the build, due to limited support, but coming in through
this tree due to dependencies on other rust binding changes that
were in here. I'll be enabling these back on in the build in the
usb.git tree after -rc1 is out so that developers can continue to
work on these in linux-next over the next development cycle.
- Android Binder driver implemented in Rust.
This is the big one, and was driving a huge majority of the rust
binding work over the past years. Right now there are two binder
drivers in the kernel, selected only at build time as to which one
to use as binder wants to be included in the system at boot time.
The binder C maintainers all agreed on this, as eventually, they
want the C code to be removed from the tree, but it will take a few
releases to get there while both are maintained to ensure that the
rust implementation is fully stable and compliant with the existing
userspace apis.
All of these have been in linux-next for a while"
* tag 'char-misc-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (320 commits)
rust: usb: keep usb::Device private for now
rust: usb: don't retain device context for the interface parent
USB: disable rust bindings from the build for now
samples: rust: add a USB driver sample
rust: usb: add basic USB abstractions
coresight: Add label sysfs node support
dt-bindings: arm: Add label in the coresight components
coresight: tnoc: add new AMBA ID to support Trace Noc V2
coresight: Fix incorrect handling for return value of devm_kzalloc
coresight: tpda: fix the logic to setup the element size
coresight: trbe: Return NULL pointer for allocation failures
coresight: Refactor runtime PM
coresight: Make clock sequence consistent
coresight: Refactor driver data allocation
coresight: Consolidate clock enabling
coresight: Avoid enable programming clock duplicately
coresight: Appropriately disable trace bus clocks
coresight: Appropriately disable programming clocks
coresight: etm4x: Support atclk
coresight: catu: Support atclk
...
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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 drivers for 6.18-rc1. It
was another normal development cycle, with lots of the usual drivers
getting updates:
- Thunderbolt driver cleanups and additions
- dwc3 driver updates
- dwc2 driver updates
- typec driver updates
- xhci driver updates and additions
- offload USB engine updates for better power management
- unused tracepoint removals
- usb gadget fixes and updates as more users start to rely on these
drivers instead of the "old" function gadget drivers
- new USB device ids
- other minor driver USB driver updates
- new USB I/O driver framework and driver additions"
The last item, the usb i/o driver, has an i2c and gpio driver added
through this tree. Those drivers were acked by the respective
subsystem maintainers.
All of these have been in linux-next for a while"
* tag 'usb-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (132 commits)
usb: vhci-hcd: Prevent suspending virtually attached devices
USB: serial: option: add SIMCom 8230C compositions
thunderbolt: Fix use-after-free in tb_dp_dprx_work
usb: xhci: align PORTSC trace with one-based port numbering
usb: xhci: correct indentation for PORTSC tracing function
usb: xhci: improve TR Dequeue Pointer mask
usb: xhci-pci: add support for hosts with zero USB3 ports
usb: xhci: Update a comment about Stop Endpoint retries
Revert "usb: xhci: Avoid Stop Endpoint retry loop if the endpoint seems Running"
usb: gadget: f_rndis: Refactor bind path to use __free()
usb: gadget: f_ecm: Refactor bind path to use __free()
usb: gadget: f_acm: Refactor bind path to use __free()
usb: gadget: f_ncm: Refactor bind path to use __free()
usb: gadget: Introduce free_usb_request helper
usb: gadget: Store endpoint pointer in usb_request
usb: host: xhci-rcar: Add Renesas RZ/G3E USB3 Host driver support
usb: host: xhci-plat: Add .post_resume_quirk for struct xhci_plat_priv
usb: host: xhci-rcar: Move R-Car reg definitions
dt-bindings: usb: Document Renesas RZ/G3E USB3HOST
usb: gadget: f_fs: Fix epfile null pointer access after ep enable.
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial updates from Greg KH:
"Here are some small updates for tty/serial drivers for 6.18-rc1.
Not many changes overall, just the usual:
- abi cleanups and reworking of the tty functions by Jiri by adding
console lock guard logic
- 8250_platform driver updates
- qcom-geni driver updates
- other minor serial driver updates
- some more vt escape codes added
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (43 commits)
tty: serial: fix help message for SERIAL_CPM
serial: 8250: omap: Support wakeup pinctrl state on suspend
dt-bindings: serial: 8250_omap: Add wakeup pinctrl state
serial: max310x: improve interrupt handling
vt: move vc_saved_screen to within tty allocated judgment
Revert "m68k: make HPDCA and HPAPCI bools"
tty: remove redundant condition checks
tty/vt: Add missing return value for VT_RESIZE in vt_ioctl()
vt: remove redundant check on vc_mode in con_font_set()
serial: qcom-geni: Add DFS clock mode support to GENI UART driver
m68k: make HPDCA and HPAPCI bools
tty: n_gsm: Don't block input queue by waiting MSC
serial: qcom-geni: Fix off-by-one error in ida_alloc_range()
serdev: Drop dev_pm_domain_detach() call
serial: sc16is7xx: drop redundant conversion to bool
vt: add support for smput/rmput escape codes
serial: stm32: allow selecting console when the driver is module
serial: 8250_core: fix coding style issue
tty: serial: Modify the use of dev_err_probe()
s390/char/con3270: use tty_port_tty guard()
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