diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index d1d25dd9ca91..4a6c1848d39f 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4460,24 +4460,17 @@ static void update_permission_bitmask(struct kvm_mmu *mmu, bool ept) * away both AD and WD. For all reads or if the last condition holds, WD * only will be masked away. */ -static void update_pkru_bitmask(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, - bool ept) +static void update_pkru_bitmask(struct kvm_mmu *mmu) { unsigned bit; bool wp; - if (ept) { + if (!is_cr4_pke(mmu)) { mmu->pkru_mask = 0; return; } - /* PKEY is enabled only if CR4.PKE and EFER.LMA are both set. */ - if (!kvm_read_cr4_bits(vcpu, X86_CR4_PKE) || !is_long_mode(vcpu)) { - mmu->pkru_mask = 0; - return; - } - - wp = is_write_protection(vcpu); + wp = is_cr0_wp(mmu); for (bit = 0; bit < ARRAY_SIZE(mmu->permissions); ++bit) { unsigned pfec, pkey_bits; @@ -4672,7 +4665,7 @@ static void init_kvm_tdp_mmu(struct kvm_vcpu *vcpu) } update_permission_bitmask(context, false); - update_pkru_bitmask(vcpu, context, false); + update_pkru_bitmask(context); update_last_nonleaf_level(vcpu, context); reset_tdp_shadow_zero_bits_mask(vcpu, context); } @@ -4730,7 +4723,7 @@ static void shadow_mmu_init_context(struct kvm_vcpu *vcpu, struct kvm_mmu *conte if (____is_cr0_pg(regs)) { reset_rsvds_bits_mask(vcpu, context); update_permission_bitmask(context, false); - update_pkru_bitmask(vcpu, context, false); + update_pkru_bitmask(context); update_last_nonleaf_level(vcpu, context); } context->shadow_root_level = new_role.base.level; @@ -4838,8 +4831,8 @@ void kvm_init_shadow_ept_mmu(struct kvm_vcpu *vcpu, bool execonly, context->direct_map = false; update_permission_bitmask(context, true); - update_pkru_bitmask(vcpu, context, true); update_last_nonleaf_level(vcpu, context); + update_pkru_bitmask(context); reset_rsvds_bits_mask_ept(vcpu, context, execonly); reset_ept_shadow_zero_bits_mask(vcpu, context, execonly); } @@ -4935,7 +4928,7 @@ static void init_kvm_nested_mmu(struct kvm_vcpu *vcpu) } update_permission_bitmask(g_context, false); - update_pkru_bitmask(vcpu, g_context, false); + update_pkru_bitmask(g_context); update_last_nonleaf_level(vcpu, g_context); } |