mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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97ec8c067d
This patch adds SMAP handling logic when setting CR4 for guests Thanks a lot to Paolo Bonzini for his suggestion to use the branchless way to detect SMAP violation. Signed-off-by: Feng Wu <feng.wu@intel.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
#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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void kvm_update_cpuid(struct kvm_vcpu *vcpu);
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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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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 0;
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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_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_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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#endif
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