diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/hashtab.c | 2 | ||||
| -rw-r--r-- | kernel/bpf/preload/bpf_preload_kern.c | 1 | ||||
| -rw-r--r-- | kernel/bpf/syscall.c | 6 | ||||
| -rw-r--r-- | kernel/dma/coherent.c | 12 | ||||
| -rw-r--r-- | kernel/dma/contiguous.c | 3 | ||||
| -rw-r--r-- | kernel/dma/mapping.c | 25 | ||||
| -rw-r--r-- | kernel/vhost_task.c | 2 |
7 files changed, 33 insertions, 18 deletions
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c index 5a5adc66b8e2..92b606d60020 100644 --- a/kernel/bpf/hashtab.c +++ b/kernel/bpf/hashtab.c @@ -2189,7 +2189,7 @@ static long bpf_for_each_hash_elem(struct bpf_map *map, bpf_callback_t callback_ b = &htab->buckets[i]; rcu_read_lock(); head = &b->head; - hlist_nulls_for_each_entry_rcu(elem, n, head, hash_node) { + hlist_nulls_for_each_entry_safe(elem, n, head, hash_node) { key = elem->key; if (is_percpu) { /* current cpu value for percpu map */ diff --git a/kernel/bpf/preload/bpf_preload_kern.c b/kernel/bpf/preload/bpf_preload_kern.c index 2fdf3c978db1..774e5a538811 100644 --- a/kernel/bpf/preload/bpf_preload_kern.c +++ b/kernel/bpf/preload/bpf_preload_kern.c @@ -89,5 +89,6 @@ static void __exit fini(void) } late_initcall(load); module_exit(fini); +MODULE_IMPORT_NS("BPF_INTERNAL"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Embedded BPF programs for introspection in bpffs"); diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 9794446bc8c6..64c3393e8270 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -1583,7 +1583,7 @@ struct bpf_map *bpf_map_get(u32 ufd) return map; } -EXPORT_SYMBOL(bpf_map_get); +EXPORT_SYMBOL_NS(bpf_map_get, "BPF_INTERNAL"); struct bpf_map *bpf_map_get_with_uref(u32 ufd) { @@ -3364,7 +3364,7 @@ struct bpf_link *bpf_link_get_from_fd(u32 ufd) bpf_link_inc(link); return link; } -EXPORT_SYMBOL(bpf_link_get_from_fd); +EXPORT_SYMBOL_NS(bpf_link_get_from_fd, "BPF_INTERNAL"); static void bpf_tracing_link_release(struct bpf_link *link) { @@ -6020,7 +6020,7 @@ int kern_sys_bpf(int cmd, union bpf_attr *attr, unsigned int size) return ____bpf_sys_bpf(cmd, attr, size); } } -EXPORT_SYMBOL(kern_sys_bpf); +EXPORT_SYMBOL_NS(kern_sys_bpf, "BPF_INTERNAL"); static const struct bpf_func_proto bpf_sys_bpf_proto = { .func = bpf_sys_bpf, diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c index 3b2bdca9f1d4..77c8d9487a9a 100644 --- a/kernel/dma/coherent.c +++ b/kernel/dma/coherent.c @@ -336,16 +336,22 @@ static phys_addr_t dma_reserved_default_memory_size __initdata; static int rmem_dma_device_init(struct reserved_mem *rmem, struct device *dev) { - if (!rmem->priv) { - struct dma_coherent_mem *mem; + struct dma_coherent_mem *mem = rmem->priv; + if (!mem) { mem = dma_init_coherent_memory(rmem->base, rmem->base, rmem->size, true); if (IS_ERR(mem)) return PTR_ERR(mem); rmem->priv = mem; } - dma_assign_coherent_memory(dev, rmem->priv); + + /* Warn if the device potentially can't use the reserved memory */ + if (mem->device_base + rmem->size - 1 > + min_not_zero(dev->coherent_dma_mask, dev->bus_dma_limit)) + dev_warn(dev, "reserved memory is beyond device's set DMA address range\n"); + + dma_assign_coherent_memory(dev, mem); return 0; } diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c index 055da410ac71..8df0dfaaca18 100644 --- a/kernel/dma/contiguous.c +++ b/kernel/dma/contiguous.c @@ -64,8 +64,7 @@ struct cma *dma_contiguous_default_area; * Users, who want to set the size of global CMA area for their system * should use cma= kernel parameter. */ -static const phys_addr_t size_bytes __initconst = - (phys_addr_t)CMA_SIZE_MBYTES * SZ_1M; +#define size_bytes ((phys_addr_t)CMA_SIZE_MBYTES * SZ_1M) static phys_addr_t size_cmdline __initdata = -1; static phys_addr_t base_cmdline __initdata; static phys_addr_t limit_cmdline __initdata; diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c index cda127027e48..051a32988040 100644 --- a/kernel/dma/mapping.c +++ b/kernel/dma/mapping.c @@ -910,6 +910,19 @@ int dma_set_coherent_mask(struct device *dev, u64 mask) } EXPORT_SYMBOL(dma_set_coherent_mask); +static bool __dma_addressing_limited(struct device *dev) +{ + const struct dma_map_ops *ops = get_dma_ops(dev); + + if (min_not_zero(dma_get_mask(dev), dev->bus_dma_limit) < + dma_get_required_mask(dev)) + return true; + + if (unlikely(ops) || use_dma_iommu(dev)) + return false; + return !dma_direct_all_ram_mapped(dev); +} + /** * dma_addressing_limited - return if the device is addressing limited * @dev: device to check @@ -920,15 +933,11 @@ EXPORT_SYMBOL(dma_set_coherent_mask); */ bool dma_addressing_limited(struct device *dev) { - const struct dma_map_ops *ops = get_dma_ops(dev); - - if (min_not_zero(dma_get_mask(dev), dev->bus_dma_limit) < - dma_get_required_mask(dev)) - return true; - - if (unlikely(ops) || use_dma_iommu(dev)) + if (!__dma_addressing_limited(dev)) return false; - return !dma_direct_all_ram_mapped(dev); + + dev_dbg(dev, "device is DMA addressing limited\n"); + return true; } EXPORT_SYMBOL_GPL(dma_addressing_limited); diff --git a/kernel/vhost_task.c b/kernel/vhost_task.c index 2ef2e1b80091..2f844c279a3e 100644 --- a/kernel/vhost_task.c +++ b/kernel/vhost_task.c @@ -111,7 +111,7 @@ EXPORT_SYMBOL_GPL(vhost_task_stop); * @arg: data to be passed to fn and handled_kill * @name: the thread's name * - * This returns a specialized task for use by the vhost layer or NULL on + * This returns a specialized task for use by the vhost layer or ERR_PTR() on * failure. The returned task is inactive, and the caller must fire it up * through vhost_task_start(). */ |