tree 3700cdc96803f5be483cd79453b240c73b522f3a
parent 6852d7b69b4949234c3a8ae1f279f6a4c6563662
author David Hildenbrand <dahi@linux.vnet.ibm.com> 1394791221 +0100
committer Christian Borntraeger <borntraeger@de.ibm.com> 1398776514 +0200

KVM: s390: enable IBS for single running VCPUs

This patch enables the IBS facility when a single VCPU is running.
The facility is dynamically turned on/off as soon as other VCPUs
enter/leave the stopped state.

When this facility is operating, some instructions can be executed
faster for single-cpu guests.

Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Reviewed-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>