257 lines
6.4 KiB
C
257 lines
6.4 KiB
C
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#ifndef ARCH_X86_KVM_CPUID_H
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#define ARCH_X86_KVM_CPUID_H
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#include "x86.h"
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#include <asm/cpu.h>
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int kvm_update_cpuid(struct kvm_vcpu *vcpu);
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bool kvm_mpx_supported(void);
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struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
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u32 function, u32 index);
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int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
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struct kvm_cpuid_entry2 __user *entries,
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unsigned int type);
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int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
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struct kvm_cpuid *cpuid,
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struct kvm_cpuid_entry __user *entries);
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int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
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struct kvm_cpuid2 *cpuid,
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struct kvm_cpuid_entry2 __user *entries);
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int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
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struct kvm_cpuid2 *cpuid,
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struct kvm_cpuid_entry2 __user *entries);
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void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx);
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int cpuid_query_maxphyaddr(struct kvm_vcpu *vcpu);
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static inline int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.maxphyaddr;
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}
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static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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if (!static_cpu_has(X86_FEATURE_XSAVE))
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return false;
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best = kvm_find_cpuid_entry(vcpu, 1, 0);
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return best && (best->ecx & bit(X86_FEATURE_XSAVE));
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}
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static inline bool guest_cpuid_has_mtrr(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 1, 0);
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return best && (best->edx & bit(X86_FEATURE_MTRR));
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}
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static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
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}
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static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->ebx & bit(X86_FEATURE_SMEP));
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}
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static inline bool guest_cpuid_has_smap(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->ebx & bit(X86_FEATURE_SMAP));
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}
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static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
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}
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static inline bool guest_cpuid_has_pku(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->ecx & bit(X86_FEATURE_PKU));
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}
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static inline bool guest_cpuid_has_longmode(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
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return best && (best->edx & bit(X86_FEATURE_LM));
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}
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static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
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return best && (best->ecx & bit(X86_FEATURE_OSVW));
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}
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static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 1, 0);
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return best && (best->ecx & bit(X86_FEATURE_PCID));
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}
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static inline bool guest_cpuid_has_x2apic(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 1, 0);
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return best && (best->ecx & bit(X86_FEATURE_X2APIC));
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}
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static inline bool guest_cpuid_is_amd(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0, 0);
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return best && best->ebx == X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx;
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}
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static inline bool guest_cpuid_has_gbpages(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
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return best && (best->edx & bit(X86_FEATURE_GBPAGES));
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}
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static inline bool guest_cpuid_has_rtm(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->ebx & bit(X86_FEATURE_RTM));
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}
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static inline bool guest_cpuid_has_mpx(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->ebx & bit(X86_FEATURE_MPX));
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}
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static inline bool guest_cpuid_has_rdtscp(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
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return best && (best->edx & bit(X86_FEATURE_RDTSCP));
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}
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static inline bool guest_cpuid_has_ibpb(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
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if (best && (best->ebx & bit(X86_FEATURE_AMD_IBPB)))
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return true;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->edx & bit(X86_FEATURE_SPEC_CTRL));
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}
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static inline bool guest_cpuid_has_spec_ctrl(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
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if (best && (best->ebx & (bit(X86_FEATURE_AMD_IBRS | bit(X86_FEATURE_AMD_SSBD)))))
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return true;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->edx & (bit(X86_FEATURE_SPEC_CTRL) | bit(X86_FEATURE_SPEC_CTRL_SSBD)));
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}
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static inline bool guest_cpuid_has_arch_capabilities(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 7, 0);
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return best && (best->edx & bit(X86_FEATURE_ARCH_CAPABILITIES));
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}
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static inline bool guest_cpuid_has_virt_ssbd(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
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return best && (best->ebx & bit(X86_FEATURE_VIRT_SSBD));
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}
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/*
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* NRIPS is provided through cpuidfn 0x8000000a.edx bit 3
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*/
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#define BIT_NRIPS 3
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static inline bool guest_cpuid_has_nrips(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x8000000a, 0);
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/*
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* NRIPS is a scattered cpuid feature, so we can't use
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* X86_FEATURE_NRIPS here (X86_FEATURE_NRIPS would be bit
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* position 8, not 3).
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*/
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return best && (best->edx & bit(BIT_NRIPS));
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}
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#undef BIT_NRIPS
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static inline int guest_cpuid_family(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
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if (!best)
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return -1;
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return x86_family(best->eax);
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}
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static inline int guest_cpuid_model(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
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if (!best)
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return -1;
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return x86_model(best->eax);
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}
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static inline int guest_cpuid_stepping(struct kvm_vcpu *vcpu)
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{
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struct kvm_cpuid_entry2 *best;
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best = kvm_find_cpuid_entry(vcpu, 0x1, 0);
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if (!best)
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return -1;
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return x86_stepping(best->eax);
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}
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#endif
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