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authorBen Horgan <ben.horgan@arm.com>2026-01-12 16:58:29 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2026-01-16 12:04:20 +0000
commitb9f5c38e4af1a094384650d2fc79fb992d6d5e64 (patch)
tree1d7833277d766258e9f8f33546101b0957704a71 /Documentation/features/debug
parentb5a69c4869211a6ab61a95f5cc987b25f383dbc3 (diff)
arm_mpam: Use non-atomic bitops when modifying feature bitmap
In the test__props_mismatch() kunit test we rely on the struct mpam_props being packed to ensure memcmp doesn't consider packing. Making it packed reduces the alignment of the features bitmap and so breaks a requirement for the use of atomics. As we don't rely on the set/clear of these bits being atomic, just make them non-atomic. Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Signed-off-by: Ben Horgan <ben.horgan@arm.com> Fixes: 8c90dc68a5de ("arm_mpam: Probe the hardware features resctrl supports") Reviewed-by: Gavin Shan <gshan@redhat.com> Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com> Tested-by: Peter Newman <peternewman@google.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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