diff options
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 60 |
1 files changed, 25 insertions, 35 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 01ab309f8f31..8cf0c1a83716 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -238,6 +238,19 @@ static struct kvm_mmu_role_regs vcpu_to_role_regs(struct kvm_vcpu *vcpu) return regs; } +static int role_regs_to_root_level(struct kvm_mmu_role_regs *regs) +{ + if (!____is_cr0_pg(regs)) + return 0; + else if (____is_efer_lma(regs)) + return ____is_cr4_la57(regs) ? PT64_ROOT_5LEVEL : + PT64_ROOT_4LEVEL; + else if (____is_cr4_pae(regs)) + return PT32E_ROOT_LEVEL; + else + return PT32_ROOT_LEVEL; +} + static inline bool kvm_available_flush_tlb_with_range(void) { return kvm_x86_ops.tlb_remote_flush_with_range; @@ -3949,7 +3962,6 @@ static void nonpaging_init_context(struct kvm_mmu *context) context->gva_to_gpa = nonpaging_gva_to_gpa; context->sync_page = nonpaging_sync_page; context->invlpg = NULL; - context->root_level = 0; context->direct_map = true; } @@ -4519,11 +4531,8 @@ static void reset_guest_paging_metadata(struct kvm_vcpu *vcpu, update_last_nonleaf_level(mmu); } -static void paging64_init_context_common(struct kvm_mmu *context, - int root_level) +static void paging64_init_context_common(struct kvm_mmu *context) { - context->root_level = root_level; - WARN_ON_ONCE(!is_cr4_pae(context)); context->page_fault = paging64_page_fault; context->gva_to_gpa = paging64_gva_to_gpa; @@ -4532,18 +4541,13 @@ static void paging64_init_context_common(struct kvm_mmu *context, context->direct_map = false; } -static void paging64_init_context(struct kvm_mmu *context, - struct kvm_mmu_role_regs *regs) +static void paging64_init_context(struct kvm_mmu *context) { - int root_level = ____is_cr4_la57(regs) ? PT64_ROOT_5LEVEL : - PT64_ROOT_4LEVEL; - - paging64_init_context_common(context, root_level); + paging64_init_context_common(context); } static void paging32_init_context(struct kvm_mmu *context) { - context->root_level = PT32_ROOT_LEVEL; context->page_fault = paging32_page_fault; context->gva_to_gpa = paging32_gva_to_gpa; context->sync_page = paging32_sync_page; @@ -4553,7 +4557,7 @@ static void paging32_init_context(struct kvm_mmu *context) static void paging32E_init_context(struct kvm_mmu *context) { - paging64_init_context_common(context, PT32E_ROOT_LEVEL); + paging64_init_context_common(context); } static union kvm_mmu_extended_role kvm_calc_mmu_role_ext(struct kvm_vcpu *vcpu, @@ -4642,21 +4646,16 @@ static void init_kvm_tdp_mmu(struct kvm_vcpu *vcpu) context->get_guest_pgd = get_cr3; context->get_pdptr = kvm_pdptr_read; context->inject_page_fault = kvm_inject_page_fault; + context->root_level = role_regs_to_root_level(®s); - if (!is_paging(vcpu)) { + if (!is_paging(vcpu)) context->gva_to_gpa = nonpaging_gva_to_gpa; - context->root_level = 0; - } else if (is_long_mode(vcpu)) { - context->root_level = ____is_cr4_la57(®s) ? - PT64_ROOT_5LEVEL : PT64_ROOT_4LEVEL; + else if (is_long_mode(vcpu)) context->gva_to_gpa = paging64_gva_to_gpa; - } else if (is_pae(vcpu)) { - context->root_level = PT32E_ROOT_LEVEL; + else if (is_pae(vcpu)) context->gva_to_gpa = paging64_gva_to_gpa; - } else { - context->root_level = PT32_ROOT_LEVEL; + else context->gva_to_gpa = paging32_gva_to_gpa; - } reset_guest_paging_metadata(vcpu, context); reset_tdp_shadow_zero_bits_mask(vcpu, context); @@ -4706,11 +4705,12 @@ static void shadow_mmu_init_context(struct kvm_vcpu *vcpu, struct kvm_mmu *conte if (!____is_cr0_pg(regs)) nonpaging_init_context(context); else if (____is_efer_lma(regs)) - paging64_init_context(context, regs); + paging64_init_context(context); else if (____is_cr4_pae(regs)) paging32E_init_context(context); else paging32_init_context(context); + context->root_level = role_regs_to_root_level(regs); reset_guest_paging_metadata(vcpu, context); context->shadow_root_level = new_role.base.level; @@ -4849,17 +4849,7 @@ kvm_calc_nested_mmu_role(struct kvm_vcpu *vcpu, struct kvm_mmu_role_regs *regs) * to "true" to try to detect bogus usage of the nested MMU. */ role.base.direct = true; - - if (!____is_cr0_pg(regs)) - role.base.level = 0; - else if (____is_efer_lma(regs)) - role.base.level = ____is_cr4_la57(regs) ? PT64_ROOT_5LEVEL : - PT64_ROOT_4LEVEL; - else if (____is_cr4_pae(regs)) - role.base.level = PT32E_ROOT_LEVEL; - else - role.base.level = PT32_ROOT_LEVEL; - + role.base.level = role_regs_to_root_level(regs); return role; } |