svm_util.h (1279B)
1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * tools/testing/selftests/kvm/include/x86_64/svm_utils.h 4 * Header for nested SVM testing 5 * 6 * Copyright (C) 2020, Red Hat, Inc. 7 */ 8 9#ifndef SELFTEST_KVM_SVM_UTILS_H 10#define SELFTEST_KVM_SVM_UTILS_H 11 12#include <stdint.h> 13#include "svm.h" 14#include "processor.h" 15 16#define CPUID_SVM_BIT 2 17#define CPUID_SVM BIT_ULL(CPUID_SVM_BIT) 18 19#define SVM_EXIT_MSR 0x07c 20#define SVM_EXIT_VMMCALL 0x081 21 22struct svm_test_data { 23 /* VMCB */ 24 struct vmcb *vmcb; /* gva */ 25 void *vmcb_hva; 26 uint64_t vmcb_gpa; 27 28 /* host state-save area */ 29 struct vmcb_save_area *save_area; /* gva */ 30 void *save_area_hva; 31 uint64_t save_area_gpa; 32 33 /* MSR-Bitmap */ 34 void *msr; /* gva */ 35 void *msr_hva; 36 uint64_t msr_gpa; 37}; 38 39struct svm_test_data *vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva); 40void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_rsp); 41void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa); 42bool nested_svm_supported(void); 43void nested_svm_check_supported(void); 44 45static inline bool cpu_has_svm(void) 46{ 47 u32 eax = 0x80000001, ecx; 48 49 asm("cpuid" : 50 "=a" (eax), "=c" (ecx) : "0" (eax) : "ebx", "edx"); 51 52 return ecx & CPUID_SVM; 53} 54 55int open_sev_dev_path_or_exit(void); 56 57#endif /* SELFTEST_KVM_SVM_UTILS_H */