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authorJames Morse <james.morse@arm.com>2018-01-15 19:38:54 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2018-01-16 14:47:14 +0000
commitedf298cfce47ab7279d03b5203ae2ef3a58e49db (patch)
tree11eba504617a3ca25386242810ecdafffaa012f3 /arch/arm64/mm
parent0abdeff598a66e2bf9bfcb016eb159b11fc2887a (diff)
arm64: cpufeature: __this_cpu_has_cap() shouldn't stop early
this_cpu_has_cap() tests caps->desc not caps->matches, so it stops walking the list when it finds a 'silent' feature, instead of walking to the end of the list. Prior to v4.6's 644c2ae198412 ("arm64: cpufeature: Test 'matches' pointer to find the end of the list") we always tested desc to find the end of a capability list. This was changed for dubious things like PAN_NOT_UAO. v4.7's e3661b128e53e ("arm64: Allow a capability to be checked on single CPU") added this_cpu_has_cap() using the old desc style test. CC: Suzuki K Poulose <suzuki.poulose@arm.com> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/mm')
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