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| author | Marc Zyngier <maz@kernel.org> | 2021-03-22 13:09:51 +0100 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-03-25 12:00:33 +0100 |
| commit | 755db23420a1ce4b740186543432983e9bbe713e (patch) | |
| tree | ae61e46ebac9d8b0857e4a91aca47128b99076f5 /arch/arm64/kernel/image-vars.h | |
| parent | KVM: arm64: Protect the .hyp sections from the host (diff) | |
| download | linux-755db23420a1ce4b740186543432983e9bbe713e.tar.xz linux-755db23420a1ce4b740186543432983e9bbe713e.zip | |
KVM: arm64: Generate final CTR_EL0 value when running in Protected mode
In protected mode, late CPUs are not allowed to boot (enforced by
the PSCI relay). We can thus specialise the read_ctr macro to
always return a pre-computed, sanitised value. Special care is
taken to prevent the use of this custome version outside of
the protected mode.
Reviewed-by: Quentin Perret <qperret@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/image-vars.h')
| -rw-r--r-- | arch/arm64/kernel/image-vars.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/image-vars.h b/arch/arm64/kernel/image-vars.h index d5dc2b792651..fdd60cd1d7e8 100644 --- a/arch/arm64/kernel/image-vars.h +++ b/arch/arm64/kernel/image-vars.h @@ -65,6 +65,7 @@ __efistub__ctype = _ctype; KVM_NVHE_ALIAS(kvm_patch_vector_branch); KVM_NVHE_ALIAS(kvm_update_va_mask); KVM_NVHE_ALIAS(kvm_get_kimage_voffset); +KVM_NVHE_ALIAS(kvm_compute_final_ctr_el0); /* Global kernel state accessed by nVHE hyp code. */ KVM_NVHE_ALIAS(kvm_vgic_global_state); |