arm64: cpufeature: Trap CTR_EL0 access only where it is necessary

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When there is a mismatch in the CTR_EL0 field, we trap
access to CTR from EL0 on all CPUs to expose the safe
value. However, we could skip trapping on a CPU which
matches the safe value.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Suzuki K Poulose 2018-10-09 14:47:07 +01:00 • committed by Catalin Marinas

parent 1602df02f3

commit 4afe8e79da

1 changed files with 6 additions and 1 deletions

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arch/arm64/kernel/cpu_errata.c

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