diff options
Diffstat (limited to 'drivers/kvm/vmx.c')
| -rw-r--r-- | drivers/kvm/vmx.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 5b397b6c9f93..47c827d3007c 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -164,6 +164,13 @@ static inline int is_no_device(u32 intr_info) (INTR_TYPE_EXCEPTION | NM_VECTOR | INTR_INFO_VALID_MASK); } +static inline int is_invalid_opcode(u32 intr_info) +{ + return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VECTOR_MASK | + INTR_INFO_VALID_MASK)) == + (INTR_TYPE_EXCEPTION | UD_VECTOR | INTR_INFO_VALID_MASK); +} + static inline int is_external_interrupt(u32 intr_info) { return (intr_info & (INTR_INFO_INTR_TYPE_MASK | INTR_INFO_VALID_MASK)) @@ -315,7 +322,7 @@ static void update_exception_bitmap(struct kvm_vcpu *vcpu) { u32 eb; - eb = 1u << PF_VECTOR; + eb = (1u << PF_VECTOR) | (1u << UD_VECTOR); if (!vcpu->fpu_active) eb |= 1u << NM_VECTOR; if (vcpu->guest_debug.enabled) @@ -560,6 +567,14 @@ static void vmx_inject_gp(struct kvm_vcpu *vcpu, unsigned error_code) INTR_INFO_VALID_MASK); } +static void vmx_inject_ud(struct kvm_vcpu *vcpu) +{ + vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, + UD_VECTOR | + INTR_TYPE_EXCEPTION | + INTR_INFO_VALID_MASK); +} + /* * Swap MSR entry in host/guest MSR entry array. */ @@ -1771,6 +1786,14 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) return 1; } + if (is_invalid_opcode(intr_info)) { + er = emulate_instruction(vcpu, kvm_run, 0, 0); + if (er != EMULATE_DONE) + vmx_inject_ud(vcpu); + + return 1; + } + error_code = 0; rip = vmcs_readl(GUEST_RIP); if (intr_info & INTR_INFO_DELIEVER_CODE_MASK) @@ -1873,7 +1896,6 @@ vmx_patch_hypercall(struct kvm_vcpu *vcpu, unsigned char *hypercall) hypercall[0] = 0x0f; hypercall[1] = 0x01; hypercall[2] = 0xc1; - hypercall[3] = 0xc3; } static int handle_cr(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) @@ -2059,7 +2081,8 @@ static int handle_halt(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) static int handle_vmcall(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) { skip_emulated_instruction(vcpu); - return kvm_hypercall(vcpu, kvm_run); + kvm_emulate_hypercall(vcpu); + return 1; } /* |