arm64: alternative: Allow alternative status checking per cpufeature

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In preparation for the application of alternatives at different points
during the boot process, provide the possibility to check whether
alternatives for a feature of interest was already applied instead of
having a global boolean for all alternatives.

Make VHE enablement code check for the VHE feature instead of considering
all alternatives.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Marc Zyngier <Marc.Zyngier@arm.com>
Cc: Christoffer Dall <Christoffer.Dall@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Julien Thierry 2019-01-31 14:58:52 +00:00 • committed by Catalin Marinas

parent 8cb7eff32c

commit e9ab7a2e33

3 changed files with 19 additions and 7 deletions

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3

arch/arm64/include/asm/alternative.h

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21

arch/arm64/kernel/alternative.c

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2

arch/arm64/kernel/cpufeature.c

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