Mark Rutland 1cea22f585 locking/atomic: arm: fix sync ops ... [ Upstream commit dda5f312bb ] The sync_*() ops on arch/arm are defined in terms of the regular bitops with no special handling. This is not correct, as UP kernels elide barriers for the fully-ordered operations, and so the required ordering is lost when such UP kernels are run under a hypervsior on an SMP system. Fix this by defining sync ops with the required barriers. Note: On 32-bit arm, the sync_*() ops are currently only used by Xen, which requires ARMv7, but the semantics can be implemented for ARMv6+. Fixes: e54d2f6152 ("xen/arm: sync_bitops") Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230605070124.3741859-2-mark.rutland@arm.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-07-19 16:35:19 +02:00
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asm	locking/atomic: arm: fix sync ops	2023-07-19 16:35:19 +02:00
debug	ARM: s3c: remove s3c24xx specific hacks	2023-01-16 09:26:05 +01:00
uapi/asm	ARM: 9274/1: Add hwcap for Speculative Store Bypassing Safe	2022-11-28 11:57:35 +00:00