From: Christoffer Dall <[email protected]> When translating an L2 IPA to an L1 IPA, we some times need to know at which level this translation occurred and what the resulting permissions was, so populate the translation result structure with these additional fields.
Signed-off-by: Christoffer Dall <[email protected]> Signed-off-by: Jintack Lim <[email protected]> --- arch/arm64/include/asm/kvm_mmu.h | 3 +++ arch/arm64/kvm/mmu-nested.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/arch/arm64/include/asm/kvm_mmu.h b/arch/arm64/include/asm/kvm_mmu.h index bf94f0c..2ac603d 100644 --- a/arch/arm64/include/asm/kvm_mmu.h +++ b/arch/arm64/include/asm/kvm_mmu.h @@ -327,6 +327,9 @@ static inline unsigned int kvm_get_vmid_bits(void) struct kvm_s2_trans { phys_addr_t output; phys_addr_t block_size; + bool writable; + bool readable; + int level; }; #ifdef CONFIG_KVM_ARM_NESTED_HYP diff --git a/arch/arm64/kvm/mmu-nested.c b/arch/arm64/kvm/mmu-nested.c index b161b55..b579d23 100644 --- a/arch/arm64/kvm/mmu-nested.c +++ b/arch/arm64/kvm/mmu-nested.c @@ -236,6 +236,9 @@ static int walk_nested_s2_pgd(struct kvm_vcpu *vcpu, phys_addr_t ipa, (ipa & GENMASK_ULL(addr_bottom - 1, 0)); out->output = paddr; out->block_size = 1UL << ((3 - level) * stride + wi->pgshift); + out->readable = desc & (0b01 << 6); + out->writable = desc & (0b10 << 6); + out->level = level; return 0; } -- 1.9.1 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
