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author | Will Deacon <will@kernel.org> | 2020-05-12 10:01:01 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2020-05-13 14:17:09 +0200 |
commit | ffed638b6a2180da8fd002a46632d746af72b299 (patch) | |
tree | bc042f1790f46eeaea90dcdcf5ddec297325df12 /Documentation/admin-guide/cifs/introduction.rst | |
parent | 6bcc8f459fe790f35dfd8e3bb0f43e530d44ee9a (diff) |
READ_ONCE: Fix comment describing 2x32-bit atomicitynoinstr-kcsan-2020-05015
READ_ONCE() permits 64-bit accesses on 32-bit architectures, since this
crops up in a few places and is generally harmless because either the
upper bits are always zero (e.g. for a virtual address or 32-bit time_t)
or the architecture provides 64-bit atomicity anyway.
Update the corresponding comment above compiletime_assert_rwonce_type(),
which incorrectly states that 32-bit x86 provides 64-bit atomicity, and
instead reference 32-bit Armv7 with LPAE.
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200512090101.2497-1-will@kernel.org
Diffstat (limited to 'Documentation/admin-guide/cifs/introduction.rst')
0 files changed, 0 insertions, 0 deletions