diff options
author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2012-10-16 08:07:03 -0400 |
---|---|---|
committer | Avi Kivity <avi@redhat.com> | 2012-10-22 12:03:25 -0400 |
commit | f3ac1a4b667eeffcedf779f45529c95d66ddc71a (patch) | |
tree | 9e4a688d44ccaa783865adfc88ac1ea6cf03e190 /virt/kvm/kvm_main.c | |
parent | ecefbd94b834fa32559d854646d777c56749ef1c (diff) |
KVM: MMU: fix release noslot pfn
We can not directly call kvm_release_pfn_clean to release the pfn
since we can meet noslot pfn which is used to cache mmio info into
spte
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt/kvm/kvm_main.c')
-rw-r--r-- | virt/kvm/kvm_main.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index c353b4599cec..a65bc02a3755 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c | |||
@@ -1322,9 +1322,7 @@ EXPORT_SYMBOL_GPL(kvm_release_page_clean); | |||
1322 | 1322 | ||
1323 | void kvm_release_pfn_clean(pfn_t pfn) | 1323 | void kvm_release_pfn_clean(pfn_t pfn) |
1324 | { | 1324 | { |
1325 | WARN_ON(is_error_pfn(pfn)); | 1325 | if (!is_error_pfn(pfn) && !kvm_is_mmio_pfn(pfn)) |
1326 | |||
1327 | if (!kvm_is_mmio_pfn(pfn)) | ||
1328 | put_page(pfn_to_page(pfn)); | 1326 | put_page(pfn_to_page(pfn)); |
1329 | } | 1327 | } |
1330 | EXPORT_SYMBOL_GPL(kvm_release_pfn_clean); | 1328 | EXPORT_SYMBOL_GPL(kvm_release_pfn_clean); |