![Feng Wu](/assets/img/avatar_default.png)
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
|
|
#define ARCH_X86_KVM_CPUID_H
|
|
|
|
#include "x86.h"
|
|
|
|
void kvm_update_cpuid(struct kvm_vcpu *vcpu);
|
|
struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
|
|
u32 function, u32 index);
|
|
int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid,
|
|
struct kvm_cpuid_entry2 __user *entries,
|
|
unsigned int type);
|
|
int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
|
|
struct kvm_cpuid *cpuid,
|
|
struct kvm_cpuid_entry __user *entries);
|
|
int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
|
|
struct kvm_cpuid2 *cpuid,
|
|
struct kvm_cpuid_entry2 __user *entries);
|
|
int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
|
|
struct kvm_cpuid2 *cpuid,
|
|
struct kvm_cpuid_entry2 __user *entries);
|
|
void kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, u32 *ecx, u32 *edx);
|
|
|
|
|
|
static inline bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
if (!static_cpu_has(X86_FEATURE_XSAVE))
|
|
return 0;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 1, 0);
|
|
return best && (best->ecx & bit(X86_FEATURE_XSAVE));
|
|
}
|
|
|
|
static inline bool guest_cpuid_has_tsc_adjust(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 7, 0);
|
|
return best && (best->ebx & bit(X86_FEATURE_TSC_ADJUST));
|
|
}
|
|
|
|
static inline bool guest_cpuid_has_smep(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 7, 0);
|
|
return best && (best->ebx & bit(X86_FEATURE_SMEP));
|
|
}
|
|
|
|
static inline bool guest_cpuid_has_smap(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 7, 0);
|
|
return best && (best->ebx & bit(X86_FEATURE_SMAP));
|
|
}
|
|
|
|
static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 7, 0);
|
|
return best && (best->ebx & bit(X86_FEATURE_FSGSBASE));
|
|
}
|
|
|
|
static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
|
|
return best && (best->ecx & bit(X86_FEATURE_OSVW));
|
|
}
|
|
|
|
static inline bool guest_cpuid_has_pcid(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 1, 0);
|
|
return best && (best->ecx & bit(X86_FEATURE_PCID));
|
|
}
|
|
|
|
static inline bool guest_cpuid_has_x2apic(struct kvm_vcpu *vcpu)
|
|
{
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 1, 0);
|
|
return best && (best->ecx & bit(X86_FEATURE_X2APIC));
|
|
}
|
|
|
|
#endif
|