/* SPDX-License-Identifier: GPL-2.0-only */ /* * tools/testing/selftests/kvm/include/x86_64/svm_utils.h * Header for nested SVM testing * * Copyright (C) 2020, Red Hat, Inc. */ #ifndef SELFTEST_KVM_SVM_UTILS_H #define SELFTEST_KVM_SVM_UTILS_H #include <stdint.h> #include "svm.h" #include "processor.h" #define CPUID_SVM_BIT 2 #define CPUID_SVM BIT_ULL(CPUID_SVM_BIT) #define SVM_EXIT_VMMCALL 0x081 struct svm_test_data { /* VMCB */ struct vmcb *vmcb; /* gva */ void *vmcb_hva; uint64_t vmcb_gpa; /* host state-save area */ struct vmcb_save_area *save_area; /* gva */ void *save_area_hva; uint64_t save_area_gpa; }; struct svm_test_data *vcpu_alloc_svm(struct kvm_vm *vm, vm_vaddr_t *p_svm_gva); void generic_svm_setup(struct svm_test_data *svm, void *guest_rip, void *guest_rsp); void run_guest(struct vmcb *vmcb, uint64_t vmcb_gpa); bool nested_svm_supported(void); void nested_svm_check_supported(void); static inline bool cpu_has_svm(void) { u32 eax = 0x80000001, ecx; asm("cpuid" : "=a" (eax), "=c" (ecx) : "0" (eax) : "ebx", "edx"); return ecx & CPUID_SVM; } int open_sev_dev_path_or_exit(void); #endif /* SELFTEST_KVM_SVM_UTILS_H */