Function vmx_inject_interrupts

freebsd/amd64/vmm/intel/vmx.c:1415–1601

}

static void
vmx_inject_interrupts(struct vmx *vmx, int vcpu, struct vlapic *vlapic,
    uint64_t guestrip)
{
	int vector, need_nmi_exiting, extint_pending;
	uint64_t rflags, entryinfo;
	uint32_t gi, info;

	if (vmx->state[vcpu].nextrip != guestrip) {
		gi = vmcs_read(VMCS_GUEST_INTERRUPTIBILITY);
		if (gi & HWINTR_BLOCKING) {
			VCPU_CTR2(vmx->vm, vcpu, "Guest interrupt blocking "
			    "cleared due to rip change: %#lx/%#lx",
			    vmx->state[vcpu].nextrip, guestrip);
			gi &= ~HWINTR_BLOCKING;
			vmcs_write(VMCS_GUEST_INTERRUPTIBILITY, gi);
		}
	}

	if (vm_entry_intinfo(vmx->vm, vcpu, &entryinfo)) {
		KASSERT((entryinfo & VMCS_INTR_VALID) != 0, ("%s: entry "
		    "intinfo is not valid: %#lx", __func__, entryinfo));

		info = vmcs_read(VMCS_ENTRY_INTR_INFO);
		KASSERT((info & VMCS_INTR_VALID) == 0, ("%s: cannot inject "
		     "pending exception: %#lx/%#x", __func__, entryinfo, info));

		info = entryinfo;
		vector = info & 0xff;
		if (vector == IDT_BP || vector == IDT_OF) {
			/*
			 * VT-x requires #BP and #OF to be injected as software
			 * exceptions.
			 */
			info &= ~VMCS_INTR_T_MASK;
			info |= VMCS_INTR_T_SWEXCEPTION;
		}

		if (info & VMCS_INTR_DEL_ERRCODE)
			vmcs_write(VMCS_ENTRY_EXCEPTION_ERROR, entryinfo >> 32);

		vmcs_write(VMCS_ENTRY_INTR_INFO, info);
	}

	if (vm_nmi_pending(vmx->vm, vcpu)) {
		/*
		 * If there are no conditions blocking NMI injection then
		 * inject it directly here otherwise enable "NMI window
		 * exiting" to inject it as soon as we can.
		 *
		 * We also check for STI_BLOCKING because some implementations
		 * don't allow NMI injection in this case. If we are running
		 * on a processor that doesn't have this restriction it will
		 * immediately exit and the NMI will be injected in the
		 * "NMI window exiting" handler.
		 */
		need_nmi_exiting = 1;
		gi = vmcs_read(VMCS_GUEST_INTERRUPTIBILITY);