diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
index 729f1cd..d09a9f5 100644
--- a/drivers/kvm/svm.c
+++ b/drivers/kvm/svm.c
@@ -476,7 +476,8 @@ static void init_vmcb(struct vmcb *vmcb)
INTERCEPT_DR5_MASK |
INTERCEPT_DR7_MASK;
- control->intercept_exceptions = 1 << PF_VECTOR;
+ control->intercept_exceptions = (1 << PF_VECTOR) |
+ (1 << UD_VECTOR);
control->intercept = (1ULL << INTERCEPT_INTR) |
@@ -970,6 +971,17 @@ static int pf_interception(struct vcpu_svm *svm,
struct kvm_run *kvm_run) return 0;
}
+static int ud_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
+{
+ int er;
+
+ er = emulate_instruction(&svm->vcpu, kvm_run, 0, 0);
+ if (er != EMULATE_DONE)
+ inject_ud(&svm->vcpu);
+
+ return 1;
+}
+
static int nm_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
{
svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR);
@@ -1036,7 +1048,8 @@ static int vmmcall_interception(struct vcpu_svm *svm,
struct kvm_run *kvm_run) {
svm->next_rip = svm->vmcb->save.rip + 3;
skip_emulated_instruction(&svm->vcpu);
- return kvm_hypercall(&svm->vcpu, kvm_run);
+ kvm_emulate_hypercall(&svm->vcpu);
+ return 1;
}
static int invalid_op_interception(struct vcpu_svm *svm,
@@ -1232,6 +1245,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm
*svm, [SVM_EXIT_WRITE_DR3] = emulate_on_interception,
[SVM_EXIT_WRITE_DR5] = emulate_on_interception,
[SVM_EXIT_WRITE_DR7] = emulate_on_interception,
+ [SVM_EXIT_EXCP_BASE + UD_VECTOR] = ud_interception,
[SVM_EXIT_EXCP_BASE + PF_VECTOR] = pf_interception,
[SVM_EXIT_EXCP_BASE + NM_VECTOR] = nm_interception,
[SVM_EXIT_INTR] = nop_on_interception,
@@ -1664,7 +1678,6 @@ svm_patch_hypercall(struct kvm_vcpu *vcpu, unsigned
char *hypercall) hypercall[0] = 0x0f;
hypercall[1] = 0x01;
hypercall[2] = 0xd9;
- hypercall[3] = 0xc3;
}
+/* This instruction is vmcall. On non-VT architectures, it will generate
a + * trap that we will then rewrite to the appropriate instruction. */
-#define __NR_hypercalls 0
+#define KVM_HYPERCALL ".byte 0x0f,0x01,0xc1"
