diff options
Diffstat (limited to 'arch/x86/kvm/hyperv.c')
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 51fc74ea773f..13bfa4e0b93d 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2092,6 +2092,17 @@ static void kvm_hv_hypercall_read_xmm(struct kvm_hv_hcall *hc) static bool hv_check_hypercall_access(struct kvm_vcpu_hv *hv_vcpu, u16 code) { + if (!hv_vcpu->enforce_cpuid) + return true; + + switch (code) { + case HVCALL_NOTIFY_LONG_SPIN_WAIT: + return hv_vcpu->cpuid_cache.enlightenments_ebx && + hv_vcpu->cpuid_cache.enlightenments_ebx != U32_MAX; + default: + break; + } + return true; } |