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-rw-r--r--arch/x86/kvm/mmu.c1
-rw-r--r--arch/x86/kvm/vmx.c1
-rw-r--r--include/linux/kvm.h4
-rw-r--r--virt/kvm/kvm_main.c1
4 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index a9024797b21f..4c3e5b2314cb 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2800,6 +2800,7 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u32 error_code)
case EMULATE_FAIL:
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+ vcpu->run->internal.ndata = 0;
return 0;
default:
BUG();
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index c9cc9596e1a6..c0e66dd58a47 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3352,6 +3352,7 @@ static int handle_invalid_guest_state(struct kvm_vcpu *vcpu)
kvm_report_emulation_failure(vcpu, "emulation failure");
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+ vcpu->run->internal.ndata = 0;
ret = 0;
goto out;
}
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index ca62b8e056f9..172639e94392 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -251,6 +251,9 @@ struct kvm_run {
} dcr;
struct {
__u32 suberror;
+ /* Available with KVM_CAP_INTERNAL_ERROR_DATA: */
+ __u32 ndata;
+ __u64 data[16];
} internal;
/* Fix the size of the union. */
char padding[256];
@@ -484,6 +487,7 @@ struct kvm_ioeventfd {
#define KVM_CAP_XEN_HVM 38
#endif
#define KVM_CAP_ADJUST_CLOCK 39
+#define KVM_CAP_INTERNAL_ERROR_DATA 40
#ifdef KVM_CAP_IRQ_ROUTING
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index bd44fb48ac43..f92ba138007a 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1653,6 +1653,7 @@ static long kvm_dev_ioctl_check_extension_generic(long arg)
#ifdef CONFIG_KVM_APIC_ARCHITECTURE
case KVM_CAP_SET_BOOT_CPU_ID:
#endif
+ case KVM_CAP_INTERNAL_ERROR_DATA:
return 1;
#ifdef CONFIG_HAVE_KVM_IRQCHIP
case KVM_CAP_IRQ_ROUTING: