On 15/01/18 19:38, James Morse wrote:
> 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@xxxxxxx>
> CC: Marc Zyngier <marc.zyngier@xxxxxxx>
> Signed-off-by: James Morse <james.morse@xxxxxxx>
> Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Acked-by: Marc Zyngier <marc.zyngier@xxxxxxx>
M.
--
Jazz is not dead. It just smells funny...
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