From: Mihai Donțu <mdontu@xxxxxxxxxxxxxxx>
This function is needed for the KVMI_EVENT_PF event, to avoid sending
such events to the introspection tool if caused by a guest page table walk.
The code path is: emulator -> {read,write,fetch} callbacks -> page tracking
-> page tracking callbacks -> KVMI_EVENT_PF.
Signed-off-by: Mihai Donțu <mdontu@xxxxxxxxxxxxxxx>
Signed-off-by: Adalbert Lazăr <alazar@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm/svm.c | 12 ++++++++++++
arch/x86/kvm/vmx/vmx.c | 8 ++++++++
3 files changed, 21 insertions(+)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index fb41199b33fc..a905e14e4c75 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1293,6 +1293,7 @@ struct kvm_x86_ops {
u64 (*fault_gla)(struct kvm_vcpu *vcpu);
bool (*spt_fault)(struct kvm_vcpu *vcpu);
+ bool (*gpt_translation_fault)(struct kvm_vcpu *vcpu);
};
struct kvm_x86_nested_ops {
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 7ecfa10dce5d..580997701b1c 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4097,6 +4097,17 @@ static bool svm_spt_fault(struct kvm_vcpu *vcpu)
return (vmcb->control.exit_code == SVM_EXIT_NPF);
}
+static bool svm_gpt_translation_fault(struct kvm_vcpu *vcpu)
+{
+ struct vcpu_svm *svm = to_svm(vcpu);
+ struct vmcb *vmcb = get_host_vmcb(svm);
+
+ if (vmcb->control.exit_info_1 & PFERR_GUEST_PAGE_MASK)
+ return true;
+
+ return false;
+}
+
static struct kvm_x86_ops svm_x86_ops __initdata = {
.hardware_unsetup = svm_hardware_teardown,
.hardware_enable = svm_hardware_enable,
@@ -4226,6 +4237,7 @@ static struct kvm_x86_ops svm_x86_ops __initdata = {
.fault_gla = svm_fault_gla,
.spt_fault = svm_spt_fault,
+ .gpt_translation_fault = svm_gpt_translation_fault,
};
static struct kvm_x86_init_ops svm_init_ops __initdata = {
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 17b88345dfb5..a043e3e7d09a 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7916,6 +7916,13 @@ static bool vmx_spt_fault(struct kvm_vcpu *vcpu)
return (vmx->exit_reason == EXIT_REASON_EPT_VIOLATION);
}
+static bool vmx_gpt_translation_fault(struct kvm_vcpu *vcpu)
+{
+ if (vcpu->arch.exit_qualification & EPT_VIOLATION_GVA_TRANSLATED)
+ return false;
+ return true;
+}
+
static struct kvm_x86_ops vmx_x86_ops __initdata = {
.hardware_unsetup = hardware_unsetup,
@@ -8055,6 +8062,7 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = {
.fault_gla = vmx_fault_gla,
.spt_fault = vmx_spt_fault,
+ .gpt_translation_fault = vmx_gpt_translation_fault,
};
static __init int hardware_setup(void)
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