diff options
| -rw-r--r-- | drivers/kvm/kvm.h | 2 | ||||
| -rw-r--r-- | drivers/kvm/kvm_main.c | 20 | ||||
| -rw-r--r-- | drivers/kvm/svm.c | 19 | ||||
| -rw-r--r-- | drivers/kvm/vmx.c | 16 |
4 files changed, 54 insertions, 3 deletions
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index bb506b71797..f8fe87d3ddb 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -490,6 +490,8 @@ struct kvm_arch_ops { void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu); void (*patch_hypercall)(struct kvm_vcpu *vcpu, unsigned char *hypercall_addr); + int (*get_irq)(struct kvm_vcpu *vcpu); + void (*set_irq)(struct kvm_vcpu *vcpu, int vec); }; extern struct kvm_arch_ops *kvm_arch_ops; diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index a012d70d9ef..d56964a6eb8 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -2126,6 +2126,7 @@ static int kvm_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { struct descriptor_table dt; + int pending_vec; vcpu_load(vcpu); @@ -2155,10 +2156,13 @@ static int kvm_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, sregs->efer = vcpu->shadow_efer; sregs->apic_base = kvm_get_apic_base(vcpu); - if (irqchip_in_kernel(vcpu->kvm)) + if (irqchip_in_kernel(vcpu->kvm)) { memset(sregs->interrupt_bitmap, 0, sizeof sregs->interrupt_bitmap); - else + pending_vec = kvm_arch_ops->get_irq(vcpu); + if (pending_vec >= 0) + set_bit(pending_vec, (unsigned long *)sregs->interrupt_bitmap); + } else memcpy(sregs->interrupt_bitmap, vcpu->irq_pending, sizeof sregs->interrupt_bitmap); @@ -2177,7 +2181,7 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { int mmu_reset_needed = 0; - int i; + int i, pending_vec, max_bits; struct descriptor_table dt; vcpu_load(vcpu); @@ -2221,6 +2225,16 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, for (i = 0; i < ARRAY_SIZE(vcpu->irq_pending); ++i) if (vcpu->irq_pending[i]) __set_bit(i, &vcpu->irq_summary); + } else { + max_bits = (sizeof sregs->interrupt_bitmap) << 3; + pending_vec = find_first_bit( + (const unsigned long *)sregs->interrupt_bitmap, + max_bits); + /* Only pending external irq is handled here */ + if (pending_vec < max_bits) { + kvm_arch_ops->set_irq(vcpu, pending_vec); + printk("Set back pending irq %d\n", pending_vec); + } } set_segment(vcpu, &sregs->cs, VCPU_SREG_CS); diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index a347b61644c..c8cd242f36f 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -843,6 +843,16 @@ static int svm_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg) return -EOPNOTSUPP; } +static int svm_get_irq(struct kvm_vcpu *vcpu) +{ + struct vcpu_svm *svm = to_svm(vcpu); + u32 exit_int_info = svm->vmcb->control.exit_int_info; + + if (is_external_interrupt(exit_int_info)) + return exit_int_info & SVM_EVTINJ_VEC_MASK; + return -1; +} + static void load_host_msrs(struct kvm_vcpu *vcpu) { #ifdef CONFIG_X86_64 @@ -1310,6 +1320,13 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq) ((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT); } +static void svm_set_irq(struct kvm_vcpu *vcpu, int irq) +{ + struct vcpu_svm *svm = to_svm(vcpu); + + svm_inject_irq(svm, irq); +} + static void svm_intr_assist(struct vcpu_svm *svm) { struct vmcb *vmcb = svm->vmcb; @@ -1783,6 +1800,8 @@ static struct kvm_arch_ops svm_arch_ops = { .run = svm_vcpu_run, .skip_emulated_instruction = skip_emulated_instruction, .patch_hypercall = svm_patch_hypercall, + .get_irq = svm_get_irq, + .set_irq = svm_set_irq, }; static int __init svm_init(void) diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 7ec8cf84e6e..6c371ea2104 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -790,6 +790,20 @@ static int set_guest_debug(struct kvm_vcpu *vcpu, struct kvm_debug_guest *dbg) return 0; } +static int vmx_get_irq(struct kvm_vcpu *vcpu) +{ + u32 idtv_info_field; + + idtv_info_field = vmcs_read32(IDT_VECTORING_INFO_FIELD); + if (idtv_info_field & INTR_INFO_VALID_MASK) { + if (is_external_interrupt(idtv_info_field)) + return idtv_info_field & VECTORING_INFO_VECTOR_MASK; + else + printk("pending exception: not handled yet\n"); + } + return -1; +} + static __init int cpu_has_kvm_support(void) { unsigned long ecx = cpuid_ecx(1); @@ -2500,6 +2514,8 @@ static struct kvm_arch_ops vmx_arch_ops = { .run = vmx_vcpu_run, .skip_emulated_instruction = skip_emulated_instruction, .patch_hypercall = vmx_patch_hypercall, + .get_irq = vmx_get_irq, + .set_irq = vmx_inject_irq, }; static int __init vmx_init(void) |