diff options
| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-08-06 12:00:32 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-08-07 15:57:40 +0200 |
| commit | 25d92081ae2ff9858fa733621ef8e91d30fec9d0 (patch) | |
| tree | 3896c76a90796a54f0cac910bfd9abbc01cb428b /arch/x86/kvm/vmx.c | |
| parent | 53166229e96941f27e7f0ba405c7a44d648751c9 (diff) | |
nEPT: Add nEPT violation/misconfigration support
Inject nEPT fault to L1 guest. This patch is original from Xinhao.
Reviewed-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Xinhao Xu <xinhao.xu@intel.com>
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index e3c8e28aeb35..0d18ed31671c 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5317,9 +5317,13 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu) /* It is a write fault? */ error_code = exit_qualification & (1U << 1); + /* It is a fetch fault? */ + error_code |= (exit_qualification & (1U << 2)) << 2; /* ept page table is present? */ error_code |= (exit_qualification >> 3) & 0x1; + vcpu->arch.exit_qualification = exit_qualification; + return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0); } @@ -7348,6 +7352,21 @@ static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry) entry->ecx |= bit(X86_FEATURE_VMX); } +static void nested_ept_inject_page_fault(struct kvm_vcpu *vcpu, + struct x86_exception *fault) +{ + struct vmcs12 *vmcs12; + nested_vmx_vmexit(vcpu); + vmcs12 = get_vmcs12(vcpu); + + if (fault->error_code & PFERR_RSVD_MASK) + vmcs12->vm_exit_reason = EXIT_REASON_EPT_MISCONFIG; + else + vmcs12->vm_exit_reason = EXIT_REASON_EPT_VIOLATION; + vmcs12->exit_qualification = vcpu->arch.exit_qualification; + vmcs12->guest_physical_address = fault->address; +} + /* * prepare_vmcs02 is called when the L1 guest hypervisor runs its nested * L2 guest. L1 has a vmcs for L2 (vmcs12), and this function "merges" it |