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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2024-06-14 16:45:38 +0200 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2024-06-19 10:13:49 +0200 |
| commit | 61e30b9eef7ffc7f88ffd95e969cfb662e41bb05 (patch) | |
| tree | e42447db945f94a2ad77e1b6cdf04513feced2ba /arch/arm64/include/asm/kvm_nested.h | |
| parent | KVM: arm64: nv: Support multiple nested Stage-2 mmu structures (diff) | |
| download | linux-61e30b9eef7ffc7f88ffd95e969cfb662e41bb05.tar.xz linux-61e30b9eef7ffc7f88ffd95e969cfb662e41bb05.zip | |
KVM: arm64: nv: Implement nested Stage-2 page table walk logic
Based on the pseudo-code in the ARM ARM, implement a stage 2 software
page table walker.
Co-developed-by: Jintack Lim <jintack.lim@linaro.org>
Signed-off-by: Jintack Lim <jintack.lim@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240614144552.2773592-3-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Diffstat (limited to 'arch/arm64/include/asm/kvm_nested.h')
| -rw-r--r-- | arch/arm64/include/asm/kvm_nested.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/kvm_nested.h b/arch/arm64/include/asm/kvm_nested.h index a69faee31342..5404b7b843cf 100644 --- a/arch/arm64/include/asm/kvm_nested.h +++ b/arch/arm64/include/asm/kvm_nested.h @@ -68,6 +68,19 @@ extern struct kvm_s2_mmu *lookup_s2_mmu(struct kvm_vcpu *vcpu); extern void kvm_vcpu_load_hw_mmu(struct kvm_vcpu *vcpu); extern void kvm_vcpu_put_hw_mmu(struct kvm_vcpu *vcpu); +struct kvm_s2_trans { + phys_addr_t output; + unsigned long block_size; + bool writable; + bool readable; + int level; + u32 esr; + u64 upper_attr; +}; + +extern int kvm_walk_nested_s2(struct kvm_vcpu *vcpu, phys_addr_t gipa, + struct kvm_s2_trans *result); + int kvm_init_nv_sysregs(struct kvm *kvm); #ifdef CONFIG_ARM64_PTR_AUTH |