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| author | Tejun Heo <tj@kernel.org> | 2016-05-09 12:34:39 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2016-05-09 12:34:39 -0400 |
| commit | 698f6700a6f19ba4550a722eaacf9f9d212b3fd9 (patch) | |
| tree | ff63c9a23fe47870df8788ff5e7d9a552f6d4ed1 /arch/x86/kvm/hyperv.c | |
| parent | 7780081c1f04a4ea31331b5579ca010cc1f26c74 (diff) | |
| parent | 13f307711b127d30fcf333a04365a217baf9ca2b (diff) | |
Merge branch '4.7/scsi-queue' of git://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi into for-4.7-zac
Pulling in the dependencies for further ZAC changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/x86/kvm/hyperv.c')
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 5ff3485acb60..01bd7b7a6866 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1116,6 +1116,11 @@ int kvm_hv_hypercall(struct kvm_vcpu *vcpu) break; case HVCALL_POST_MESSAGE: case HVCALL_SIGNAL_EVENT: + /* don't bother userspace if it has no way to handle it */ + if (!vcpu_to_synic(vcpu)->active) { + res = HV_STATUS_INVALID_HYPERCALL_CODE; + break; + } vcpu->run->exit_reason = KVM_EXIT_HYPERV; vcpu->run->hyperv.type = KVM_EXIT_HYPERV_HCALL; vcpu->run->hyperv.u.hcall.input = param; |