arm64: Allow ID_AA64MMFR1_EL1.VH to be overridden from the command line

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As we want to be able to disable VHE at runtime, let's match
"id_aa64mmfr1.vh=" from the command line as an override.
This doesn't have much effect yet as our boot code doesn't look
at the cpufeature, but only at the HW registers.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Acked-by: David Brazdil <dbrazdil@google.com>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20210208095732.3267263-15-maz@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>

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Marc Zyngier 2021-02-08 09:57:23 +00:00 • committed by Will Deacon

parent 3320030355

commit 361db0fca7

3 changed files with 17 additions and 1 deletions

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2

arch/arm64/include/asm/cpufeature.h

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5

arch/arm64/kernel/cpufeature.c

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11

arch/arm64/kernel/idreg-override.c

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