From: David Hildenbrand <dahi@linux.vnet.ibm.com>
Date: Fri, 14 Mar 2014 10:00:21 +0000 (+0100)
Subject: KVM: s390: enable IBS for single running VCPUs
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~8^2~50^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ad357551797b1edc184fb9f6a4f80a6fa626459;p=pandora-kernel.git

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>
---

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