linux-stable/Documentation
Kefeng Wang 80bc1e5d9e asm-generic: Add memory barrier dma_mb()
[ Upstream commit ed59dfd950 ]

The memory barrier dma_mb() is introduced by commit a76a37777f
("iommu/arm-smmu-v3: Ensure queue is read after updating prod pointer"),
which is used to ensure that prior (both reads and writes) accesses
to memory by a CPU are ordered w.r.t. a subsequent MMIO write.

Reviewed-by: Arnd Bergmann <arnd@arndb.de> # for asm-generic
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Marco Elver <elver@google.com>
Link: https://lore.kernel.org/r/20220523113126.171714-2-wangkefeng.wang@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Stable-dep-of: aa6956150f ("wifi: ath11k: fix dest ring-buffer corruption when ring is full")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-08-28 16:24:36 +02:00
..
ABI x86/bugs: Add a Transient Scheduler Attacks mitigation 2025-07-10 15:57:50 +02:00
accounting
admin-guide x86/bugs: Add a Transient Scheduler Attacks mitigation 2025-07-10 15:57:50 +02:00
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Changes
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conf.py
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docutils.conf
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index.rst
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Makefile
memory-barriers.txt asm-generic: Add memory barrier dma_mb() 2025-08-28 16:24:36 +02:00
SubmittingPatches
watch_queue.rst