From: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Date: Fri, 3 Aug 2012 07:36:52 +0000 (+0800)
Subject: KVM: iommu: fix releasing unmapped page
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~15^2~81
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16b854c889673d988285719bc020543a730f9ac6;p=pandora-kernel.git

KVM: iommu: fix releasing unmapped page

There are two bugs:
- the 'error page' is forgot to be released
  [ it is unneeded after commit a2766325cf9f9, for backport, we
    still do kvm_release_pfn_clean for the error pfn ]

- guest pages are always released regardless of the unmapped page
  (e,g, caused by hwpoison)

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

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