diff options
| -rw-r--r-- | drivers/kvm/svm.c | 21 | ||||
| -rw-r--r-- | drivers/kvm/vmx.c | 20 | ||||
| -rw-r--r-- | drivers/kvm/x86.c | 33 | ||||
| -rw-r--r-- | drivers/kvm/x86.h | 13 |
4 files changed, 86 insertions, 1 deletions
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index c75c6b65b651..87072c647f28 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -188,6 +188,25 @@ static void svm_set_efer(struct kvm_vcpu *vcpu, u64 efer) vcpu->shadow_efer = efer; } +static void svm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr, + bool has_error_code, u32 error_code) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + svm->vmcb->control.event_inj = nr + | SVM_EVTINJ_VALID + | (has_error_code ? SVM_EVTINJ_VALID_ERR : 0) + | SVM_EVTINJ_TYPE_EXEPT; + svm->vmcb->control.event_inj_err = error_code; +} + +static bool svm_exception_injected(struct kvm_vcpu *vcpu) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + return !(svm->vmcb->control.exit_int_info & SVM_EXITINTINFO_VALID); +} + static void svm_inject_gp(struct kvm_vcpu *vcpu, unsigned error_code) { struct vcpu_svm *svm = to_svm(vcpu); @@ -1712,6 +1731,8 @@ static struct kvm_x86_ops svm_x86_ops = { .patch_hypercall = svm_patch_hypercall, .get_irq = svm_get_irq, .set_irq = svm_set_irq, + .queue_exception = svm_queue_exception, + .exception_injected = svm_exception_injected, .inject_pending_irq = svm_intr_assist, .inject_pending_vectors = do_interrupt_requests, diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index fc5e7c8381ce..f382956f176a 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -595,6 +595,24 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu) vcpu->interrupt_window_open = 1; } +static void vmx_queue_exception(struct kvm_vcpu *vcpu, unsigned nr, + bool has_error_code, u32 error_code) +{ + vmcs_write32(VM_ENTRY_INTR_INFO_FIELD, + nr | INTR_TYPE_EXCEPTION + | (has_error_code ? INTR_INFO_DELIEVER_CODE_MASK : 0) + | INTR_INFO_VALID_MASK); + if (has_error_code) + vmcs_write32(VM_ENTRY_EXCEPTION_ERROR_CODE, error_code); +} + +static bool vmx_exception_injected(struct kvm_vcpu *vcpu) +{ + struct vcpu_vmx *vmx = to_vmx(vcpu); + + return !(vmx->idt_vectoring_info & VECTORING_INFO_VALID_MASK); +} + static void vmx_inject_gp(struct kvm_vcpu *vcpu, unsigned error_code) { printk(KERN_DEBUG "inject_general_protection: rip 0x%lx\n", @@ -2641,6 +2659,8 @@ static struct kvm_x86_ops vmx_x86_ops = { .patch_hypercall = vmx_patch_hypercall, .get_irq = vmx_get_irq, .set_irq = vmx_inject_irq, + .queue_exception = vmx_queue_exception, + .exception_injected = vmx_exception_injected, .inject_pending_irq = vmx_intr_assist, .inject_pending_vectors = do_interrupt_requests, diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c index c9e4b67bfb1b..11440d12a2d3 100644 --- a/drivers/kvm/x86.c +++ b/drivers/kvm/x86.c @@ -133,6 +133,32 @@ static void inject_gp(struct kvm_vcpu *vcpu) kvm_x86_ops->inject_gp(vcpu, 0); } +void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr) +{ + WARN_ON(vcpu->exception.pending); + vcpu->exception.pending = true; + vcpu->exception.has_error_code = false; + vcpu->exception.nr = nr; +} +EXPORT_SYMBOL_GPL(kvm_queue_exception); + +void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code) +{ + WARN_ON(vcpu->exception.pending); + vcpu->exception.pending = true; + vcpu->exception.has_error_code = true; + vcpu->exception.nr = nr; + vcpu->exception.error_code = error_code; +} +EXPORT_SYMBOL_GPL(kvm_queue_exception_e); + +static void __queue_exception(struct kvm_vcpu *vcpu) +{ + kvm_x86_ops->queue_exception(vcpu, vcpu->exception.nr, + vcpu->exception.has_error_code, + vcpu->exception.error_code); +} + /* * Load the pae pdptrs. Return true is they are all valid. */ @@ -2370,7 +2396,9 @@ again: goto out; } - if (irqchip_in_kernel(vcpu->kvm)) + if (vcpu->exception.pending) + __queue_exception(vcpu); + else if (irqchip_in_kernel(vcpu->kvm)) kvm_x86_ops->inject_pending_irq(vcpu); else kvm_x86_ops->inject_pending_vectors(vcpu, kvm_run); @@ -2409,6 +2437,9 @@ again: profile_hit(KVM_PROFILING, (void *)vcpu->rip); } + if (vcpu->exception.pending && kvm_x86_ops->exception_injected(vcpu)) + vcpu->exception.pending = false; + r = kvm_x86_ops->handle_exit(kvm_run, vcpu); if (r > 0) { diff --git a/drivers/kvm/x86.h b/drivers/kvm/x86.h index eed796402e3b..1e71668694ea 100644 --- a/drivers/kvm/x86.h +++ b/drivers/kvm/x86.h @@ -139,6 +139,13 @@ struct kvm_vcpu { struct kvm_pio_request pio; void *pio_data; + struct kvm_queued_exception { + bool pending; + bool has_error_code; + u8 nr; + u32 error_code; + } exception; + struct { int active; u8 save_iopl; @@ -224,6 +231,9 @@ struct kvm_x86_ops { unsigned char *hypercall_addr); int (*get_irq)(struct kvm_vcpu *vcpu); void (*set_irq)(struct kvm_vcpu *vcpu, int vec); + void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr, + bool has_error_code, u32 error_code); + bool (*exception_injected)(struct kvm_vcpu *vcpu); void (*inject_pending_irq)(struct kvm_vcpu *vcpu); void (*inject_pending_vectors)(struct kvm_vcpu *vcpu, struct kvm_run *run); @@ -294,6 +304,9 @@ void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); +void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr); +void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code); + void fx_init(struct kvm_vcpu *vcpu); int emulator_read_std(unsigned long addr, |