KVM: SVM: Add NMI injection support
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 116eac0..bad2413 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1314,6 +1314,9 @@
if (!cpu_has_vmx_flexpriority())
flexpriority_enabled = 0;
+ if (!cpu_has_vmx_tpr_shadow())
+ kvm_x86_ops->update_cr8_intercept = NULL;
+
return alloc_kvm_area();
}
@@ -2404,6 +2407,12 @@
return ret;
}
+void vmx_drop_interrupt_shadow(struct kvm_vcpu *vcpu)
+{
+ vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
+ GUEST_INTR_STATE_STI | GUEST_INTR_STATE_MOV_SS);
+}
+
static void enable_irq_window(struct kvm_vcpu *vcpu)
{
u32 cpu_based_vm_exec_control;
@@ -3214,21 +3223,14 @@
return 0;
}
-static void update_tpr_threshold(struct kvm_vcpu *vcpu)
+static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr)
{
- int max_irr, tpr;
-
- if (!vm_need_tpr_shadow(vcpu->kvm))
- return;
-
- if (!kvm_lapic_enabled(vcpu) ||
- ((max_irr = kvm_lapic_find_highest_irr(vcpu)) == -1)) {
+ if (irr == -1 || tpr < irr) {
vmcs_write32(TPR_THRESHOLD, 0);
return;
}
- tpr = (kvm_lapic_get_cr8(vcpu) & 0x0f) << 4;
- vmcs_write32(TPR_THRESHOLD, (max_irr > tpr) ? tpr >> 4 : max_irr >> 4);
+ vmcs_write32(TPR_THRESHOLD, irr);
}
static void vmx_complete_interrupts(struct vcpu_vmx *vmx)
@@ -3300,55 +3302,6 @@
}
}
-static void vmx_intr_inject(struct kvm_vcpu *vcpu)
-{
- /* try to reinject previous events if any */
- if (vcpu->arch.nmi_injected) {
- vmx_inject_nmi(vcpu);
- return;
- }
-
- if (vcpu->arch.interrupt.pending) {
- vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
- return;
- }
-
- /* try to inject new event if pending */
- if (vcpu->arch.nmi_pending) {
- if (vmx_nmi_allowed(vcpu)) {
- vcpu->arch.nmi_pending = false;
- vcpu->arch.nmi_injected = true;
- vmx_inject_nmi(vcpu);
- }
- } else if (kvm_cpu_has_interrupt(vcpu)) {
- if (vmx_interrupt_allowed(vcpu)) {
- kvm_queue_interrupt(vcpu, kvm_cpu_get_interrupt(vcpu));
- vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
- }
- }
-}
-
-static void vmx_intr_assist(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
-{
- bool req_int_win = !irqchip_in_kernel(vcpu->kvm) &&
- kvm_run->request_interrupt_window;
-
- update_tpr_threshold(vcpu);
-
- if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
- vmcs_clear_bits(GUEST_INTERRUPTIBILITY_INFO,
- GUEST_INTR_STATE_STI |
- GUEST_INTR_STATE_MOV_SS);
-
- vmx_intr_inject(vcpu);
-
- /* enable NMI/IRQ window open exits if needed */
- if (vcpu->arch.nmi_pending)
- enable_nmi_window(vcpu);
- else if (kvm_cpu_has_interrupt(vcpu) || req_int_win)
- enable_irq_window(vcpu);
-}
-
/*
* Failure to inject an interrupt should give us the information
* in IDT_VECTORING_INFO_FIELD. However, if the failure occurs
@@ -3683,9 +3636,15 @@
.patch_hypercall = vmx_patch_hypercall,
.get_irq = vmx_get_irq,
.set_irq = vmx_inject_irq,
+ .set_nmi = vmx_inject_nmi,
.queue_exception = vmx_queue_exception,
- .inject_pending_irq = vmx_intr_assist,
.interrupt_allowed = vmx_interrupt_allowed,
+ .nmi_allowed = vmx_nmi_allowed,
+ .enable_nmi_window = enable_nmi_window,
+ .enable_irq_window = enable_irq_window,
+ .update_cr8_intercept = update_cr8_intercept,
+ .drop_interrupt_shadow = vmx_drop_interrupt_shadow,
+
.set_tss_addr = vmx_set_tss_addr,
.get_tdp_level = get_ept_level,
.get_mt_mask_shift = vmx_get_mt_mask_shift,