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