1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * tools/testing/selftests/kvm/include/x86_64/svm_utils.h
4 * Header for nested SVM testing
6 * Copyright (C) 2020, Red Hat, Inc.
9 #ifndef SELFTEST_KVM_SVM_UTILS_H
10 #define SELFTEST_KVM_SVM_UTILS_H
14 #include "processor.h"
16 #define CPUID_SVM_BIT 2
17 #define CPUID_SVM BIT_ULL(CPUID_SVM_BIT)
19 #define SVM_EXIT_VMMCALL 0x081
21 struct svm_test_data {
23 struct vmcb *vmcb; /* gva */
27 /* host state-save area */
28 struct vmcb_save_area *save_area; /* gva */
30 uint64_t save_area_gpa;
33 struct svm_test_data *vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva);
34 void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_rsp);
35 void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa);
36 void nested_svm_check_supported(void);
38 static inline bool cpu_has_svm(void)
40 u32 eax = 0x80000001, ecx;
43 "=a" (eax), "=c" (ecx) : "0" (eax) : "ebx", "edx");
45 return ecx & CPUID_SVM;
48 #endif /* SELFTEST_KVM_SVM_UTILS_H */