KVM: arm64: Validate FGT register descriptions against RES0 masks

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In order to point out to the unsuspecting KVM hacker that they
are missing something somewhere, validate that the known FGT bits
do not intersect with the corresponding RES0 mask, as computed at
boot time.

THis check is also performed at boot time, ensuring that there is
no runtime overhead.

Signed-off-by: Marc Zyngier <maz@kernel.org>

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This commit is contained in:

Marc Zyngier 2025-02-09 14:19:05 +00:00

parent 63d423a763

commit 938a79d0aa

3 changed files with 32 additions and 0 deletions

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1

arch/arm64/include/asm/kvm_host.h

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29

arch/arm64/kvm/config.c

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2

arch/arm64/kvm/sys_regs.c

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