Function vmx_run

freebsd/amd64/vmm/intel/vmx.c:2970–3179

}

static int
vmx_run(void *arg, int vcpu, register_t rip, pmap_t pmap,
    struct vm_eventinfo *evinfo)
{
	int rc, handled, launched;
	struct vmx *vmx;
	struct vm *vm;
	struct vmxctx *vmxctx;
	struct vmcs *vmcs;
	struct vm_exit *vmexit;
	struct vlapic *vlapic;
	uint32_t exit_reason;
	struct region_descriptor gdtr, idtr;
	uint16_t ldt_sel;

	vmx = arg;
	vm = vmx->vm;
	vmcs = &vmx->vmcs[vcpu];
	vmxctx = &vmx->ctx[vcpu];
	vlapic = vm_lapic(vm, vcpu);
	vmexit = vm_exitinfo(vm, vcpu);
	launched = 0;

	KASSERT(vmxctx->pmap == pmap,
	    ("pmap %p different than ctx pmap %p", pmap, vmxctx->pmap));

	vmx_msr_guest_enter(vmx, vcpu);

	VMPTRLD(vmcs);

	/*
	 * XXX
	 * We do this every time because we may setup the virtual machine
	 * from a different process than the one that actually runs it.
	 *
	 * If the life of a virtual machine was spent entirely in the context
	 * of a single process we could do this once in vmx_init().
	 */
	vmcs_write(VMCS_HOST_CR3, rcr3());

	vmcs_write(VMCS_GUEST_RIP, rip);
	vmx_set_pcpu_defaults(vmx, vcpu, pmap);
	do {
		KASSERT(vmcs_guest_rip() == rip, ("%s: vmcs guest rip mismatch "
		    "%#lx/%#lx", __func__, vmcs_guest_rip(), rip));

		handled = UNHANDLED;
		/*
		 * Interrupts are disabled from this point on until the
		 * guest starts executing. This is done for the following
		 * reasons:
		 *
		 * If an AST is asserted on this thread after the check below,
		 * then the IPI_AST notification will not be lost, because it
		 * will cause a VM exit due to external interrupt as soon as
		 * the guest state is loaded.
		 *
		 * A posted interrupt after 'vmx_inject_interrupts()' will