Hyper-V partition must possess 'HV_POST_MESSAGES' privilege to issue
HVCALL_POST_MESSAGE hypercalls.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <
20210521095204.2161214-23-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
case HVCALL_NOTIFY_LONG_SPIN_WAIT:
return hv_vcpu->cpuid_cache.enlightenments_ebx &&
hv_vcpu->cpuid_cache.enlightenments_ebx != U32_MAX;
+ case HVCALL_POST_MESSAGE:
+ return hv_vcpu->cpuid_cache.features_ebx & HV_POST_MESSAGES;
default:
break;
}