KVM: arm64: Patch kimage_voffset instead of loading the EL1 value

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Directly using the kimage_voffset variable is fine for now, but
will become more problematic as we start distrusting EL1.

Instead, patch the kimage_voffset into the HYP text, ensuring
we don't have to load an untrusted value later on.

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

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This commit is contained in:

Marc Zyngier 2020-10-24 16:33:38 +01:00

parent 7cd0aaafaa

commit 68b824e428

4 changed files with 30 additions and 7 deletions

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22

arch/arm64/include/asm/kvm_mmu.h

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4

arch/arm64/kernel/image-vars.h

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5

arch/arm64/kvm/hyp/nvhe/host.S

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6

arch/arm64/kvm/va_layout.c

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