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| author | KarimAllah Ahmed <karahmed@amazon.de> | 2019-01-31 21:24:35 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-04-30 21:32:59 +0200 |
| commit | b146b839282ca98927a109d6bb0351c7380b70e4 (patch) | |
| tree | 7effc7297ad40c26b02a5f39c84c6b552e093159 /arch/x86/kvm/vmx | |
| parent | e45adf665a53df0db37f784ed87c6b57ddd81885 (diff) | |
| download | linux-b146b839282ca98927a109d6bb0351c7380b70e4.tar.gz | |
X86/nVMX: handle_vmptrld: Use kvm_vcpu_map when copying VMCS12 from guest memory
Use kvm_vcpu_map to the map the VMCS12 from guest memory because kvm_vcpu_gpa_to_page() and kmap() will only work for guest memory that has a "struct page". Signed-off-by: KarimAllah Ahmed <karahmed@amazon.de> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 9b1973cc1e75..fb9953b8f3f1 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -4593,11 +4593,10 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu) return 1; if (vmx->nested.current_vmptr != vmptr) { + struct kvm_host_map map; struct vmcs12 *new_vmcs12; - struct page *page; - page = kvm_vcpu_gpa_to_page(vcpu, vmptr); - if (is_error_page(page)) { + if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmptr), &map)) { /* * Reads from an unbacked page return all 1s, * which means that the 32 bits located at the @@ -4607,12 +4606,13 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu) return nested_vmx_failValid(vcpu, VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID); } - new_vmcs12 = kmap(page); + + new_vmcs12 = map.hva; + if (new_vmcs12->hdr.revision_id != VMCS12_REVISION || (new_vmcs12->hdr.shadow_vmcs && !nested_cpu_has_vmx_shadow_vmcs(vcpu))) { - kunmap(page); - kvm_release_page_clean(page); + kvm_vcpu_unmap(vcpu, &map, false); return nested_vmx_failValid(vcpu, VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID); } @@ -4624,8 +4624,7 @@ static int handle_vmptrld(struct kvm_vcpu *vcpu) * cached. */ memcpy(vmx->nested.cached_vmcs12, new_vmcs12, VMCS12_SIZE); - kunmap(page); - kvm_release_page_clean(page); + kvm_vcpu_unmap(vcpu, &map, false); set_current_vmptr(vmx, vmptr); } |