diff options
| author | Nadav Amit <namit@cs.technion.ac.il> | 2014-09-16 08:10:03 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-09-24 08:07:48 -0400 |
| commit | dd598091de4aabbc8bd7290a04f364e443c03455 (patch) | |
| tree | 72123be86eb587d26b0bce0cca474aa05d3a2555 /arch/x86/kvm/cpuid.h | |
| parent | 3c3c29fd0d7cddc32862c350d0700ce69953e3bd (diff) | |
KVM: x86: Warn if guest virtual address space is not 48-bits
The KVM emulator code assumes that the guest virtual address space (in 64-bit)
is 48-bits wide. Fail the KVM_SET_CPUID and KVM_SET_CPUID2 ioctl if
userspace tries to create a guest that does not obey this restriction.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/cpuid.h')
| -rw-r--r-- | arch/x86/kvm/cpuid.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index 43b33e301e68..4452eedfaedd 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h | |||
| @@ -3,7 +3,7 @@ | |||
| 3 | 3 | ||
| 4 | #include "x86.h" | 4 | #include "x86.h" |
| 5 | 5 | ||
| 6 | void kvm_update_cpuid(struct kvm_vcpu *vcpu); | 6 | int kvm_update_cpuid(struct kvm_vcpu *vcpu); |
| 7 | struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu, | 7 | struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu, |
| 8 | u32 function, u32 index); | 8 | u32 function, u32 index); |
| 9 | int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid, | 9 | int kvm_dev_ioctl_get_cpuid(struct kvm_cpuid2 *cpuid, |