tree bec7cf046706e3d2c8ecfaa6bb232f7ef232861a
parent 321c5658c5e9192dea0d58ab67cf1791e45b2b26
author Paolo Bonzini <pbonzini@redhat.com> 1459243405 +0200
committer Paolo Bonzini <pbonzini@redhat.com> 1459505409 +0200

KVM: Hyper-V: do not do hypercall userspace exits if SynIC is disabled

If SynIC is disabled, there is nothing that userspace can do to
handle these exits; on the other hand, userspace probably will
not know about KVM_EXIT_HYPERV_HCALL and complain about it or
even exit.  Just prevent anything bad from happening by handling
the hypercall in KVM and returning an "invalid hypercall" code.

Fixes: 83326e43f27e9a8a501427a0060f8af519a39bb2
Cc: Andrey Smetanin <irqlevel@gmail.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>