KVM: selftests: Convert vmx_apic_access_test away from VCPU_ID

Convert vmx_apic_access_test to use vm_create_with_one_vcpu() and pass
around a 'struct kvm_vcpu' object instead of using a global VCPU_ID.

Opportunistically make the "vm" variable local, it is unused outside of
main().

Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/x86_64/vmx_apic_access_test.c

@@ -28,11 +28,6 @@
 
 #include "kselftest.h"
 
-#define VCPU_ID		0
-
-/* The virtual machine object. */
-static struct kvm_vm *vm;
-
 static void l2_guest_code(void)
 {
 	/* Exit to L1 */
@@ -84,9 +79,12 @@ int main(int argc, char *argv[])
 	struct vmx_pages *vmx;
 	bool done = false;
 
+	struct kvm_vcpu *vcpu;
+	struct kvm_vm *vm;
+
 	nested_vmx_check_supported();
 
-	vm = vm_create_default(VCPU_ID, 0, (void *) l1_guest_code);
+	vm = vm_create_with_one_vcpu(&vcpu, l1_guest_code);
 
 	kvm_get_cpu_address_width(&paddr_width, &vaddr_width);
 	high_gpa = (1ul << paddr_width) - getpagesize();
@@ -97,13 +95,13 @@ int main(int argc, char *argv[])
 
 	vmx = vcpu_alloc_vmx(vm, &vmx_pages_gva);
 	prepare_virtualize_apic_accesses(vmx, vm);
-	vcpu_args_set(vm, VCPU_ID, 2, vmx_pages_gva, high_gpa);
+	vcpu_args_set(vm, vcpu->id, 2, vmx_pages_gva, high_gpa);
 
 	while (!done) {
-		volatile struct kvm_run *run = vcpu_state(vm, VCPU_ID);
+		volatile struct kvm_run *run = vcpu->run;
 		struct ucall uc;
 
-		vcpu_run(vm, VCPU_ID);
+		vcpu_run(vm, vcpu->id);
 		if (apic_access_addr == high_gpa) {
 			TEST_ASSERT(run->exit_reason ==
 				    KVM_EXIT_INTERNAL_ERROR,
@@ -121,7 +119,7 @@ int main(int argc, char *argv[])
 			    run->exit_reason,
 			    exit_reason_str(run->exit_reason));
 
-		switch (get_ucall(vm, VCPU_ID, &uc)) {
+		switch (get_ucall(vm, vcpu->id, &uc)) {
 		case UCALL_ABORT:
 			TEST_FAIL("%s at %s:%ld", (const char *)uc.args[0],
 				  __FILE__, uc.args[1]);