KVM: s390: optimize round trip time in request handling
authorChristian Borntraeger <borntraeger@de.ibm.com>
Thu, 16 Apr 2015 14:58:22 +0000 (16:58 +0200)
committerChristian Borntraeger <borntraeger@de.ibm.com>
Fri, 8 May 2015 13:51:12 +0000 (15:51 +0200)
commit785dbef407d8b3c82348aba2689e493c752c62ec
tree230adb5cebc7fb963f7df9b90f89bb3486467f0c
parentb938eacea0b6881f2116a061e6da3ec840e75137
KVM: s390: optimize round trip time in request handling

The fast path for a sie exit is that no kvm reqest is pending.
Make an early check to skip all single bit checks.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
arch/s390/kvm/kvm-s390.c