1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2020, Red Hat, Inc.
7 * Nested SVM testing: VMCALL
10 #include "test_util.h"
12 #include "processor.h"
17 static struct kvm_vm *vm;
19 static void l2_guest_code(struct svm_test_data *svm)
21 __asm__ __volatile__("vmcall");
24 static void l1_guest_code(struct svm_test_data *svm)
26 #define L2_GUEST_STACK_SIZE 64
27 unsigned long l2_guest_stack[L2_GUEST_STACK_SIZE];
28 struct vmcb *vmcb = svm->vmcb;
30 /* Prepare for L2 execution. */
31 generic_svm_setup(svm, l2_guest_code,
32 &l2_guest_stack[L2_GUEST_STACK_SIZE]);
34 run_guest(vmcb, svm->vmcb_gpa);
36 GUEST_ASSERT(vmcb->control.exit_code == SVM_EXIT_VMMCALL);
40 int main(int argc, char *argv[])
44 nested_svm_check_supported();
46 vm = vm_create_default(VCPU_ID, 0, (void *) l1_guest_code);
47 vcpu_set_cpuid(vm, VCPU_ID, kvm_get_supported_cpuid());
49 vcpu_alloc_svm(vm, &svm_gva);
50 vcpu_args_set(vm, VCPU_ID, 1, svm_gva);
53 volatile struct kvm_run *run = vcpu_state(vm, VCPU_ID);
56 vcpu_run(vm, VCPU_ID);
57 TEST_ASSERT(run->exit_reason == KVM_EXIT_IO,
58 "Got exit_reason other than KVM_EXIT_IO: %u (%s)\n",
60 exit_reason_str(run->exit_reason));
62 switch (get_ucall(vm, VCPU_ID, &uc)) {
64 TEST_ASSERT(false, "%s",
65 (const char *)uc.args[0]);
73 "Unknown ucall 0x%x.", uc.cmd);