diff options
| author | Sean Christopherson <seanjc@google.com> | 2021-06-22 20:57:24 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-25 01:00:44 +0300 |
| commit | 5472fcd4c6c8026565644f31490cfddfdafb9519 (patch) | |
| tree | cd3ac29871c3b42c75634eddbc0687bbd67f6e6f | |
| parent | a4c93252fed1517362d2ce43c6a5fd50a1152ed6 (diff) | |
| download | linux-5472fcd4c6c8026565644f31490cfddfdafb9519.tar.xz | |
KVM: x86/mmu: Get nested MMU's root level from the MMU's role
Initialize the MMU's (guest) root_level using its mmu_role instead of
redoing the calculations. The role_regs used to calculate the mmu_role
are initialized from the vCPU, i.e. this should be a complete nop.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210622175739.3610207-40-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 91b27538328f..3d87b7fcf6b3 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4874,6 +4874,7 @@ static void init_kvm_nested_mmu(struct kvm_vcpu *vcpu) g_context->get_guest_pgd = get_cr3; g_context->get_pdptr = kvm_pdptr_read; g_context->inject_page_fault = kvm_inject_page_fault; + g_context->root_level = new_role.base.level; /* * L2 page tables are never shadowed, so there is no need to sync @@ -4890,19 +4891,14 @@ static void init_kvm_nested_mmu(struct kvm_vcpu *vcpu) * the gva_to_gpa functions between mmu and nested_mmu are swapped. */ if (!is_paging(vcpu)) { - g_context->root_level = 0; g_context->gva_to_gpa = nonpaging_gva_to_gpa_nested; } else if (is_long_mode(vcpu)) { - g_context->root_level = is_la57_mode(vcpu) ? - PT64_ROOT_5LEVEL : PT64_ROOT_4LEVEL; reset_rsvds_bits_mask(vcpu, g_context); g_context->gva_to_gpa = paging64_gva_to_gpa_nested; } else if (is_pae(vcpu)) { - g_context->root_level = PT32E_ROOT_LEVEL; reset_rsvds_bits_mask(vcpu, g_context); g_context->gva_to_gpa = paging64_gva_to_gpa_nested; } else { - g_context->root_level = PT32_ROOT_LEVEL; reset_rsvds_bits_mask(vcpu, g_context); g_context->gva_to_gpa = paging32_gva_to_gpa_nested; } |