aboutsummaryrefslogtreecommitdiff
path: root/virt
diff options
context:
space:
mode:
authorXiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>2012-08-03 15:36:52 +0800
committerAvi Kivity <avi@redhat.com>2012-08-06 16:04:46 +0300
commit16b854c889673d988285719bc020543a730f9ac6 (patch)
tree03b85cb0aada8a8fa4fd538d9b0fddc5460df495 /virt
parentd89cc617b954aff4030fce178f7d86f59aaf713d (diff)
downloadvexpress-lsk-16b854c889673d988285719bc020543a730f9ac6.tar.gz
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>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/iommu.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c
index c03f1fb2670..6a67bea4019 100644
--- a/virt/kvm/iommu.c
+++ b/virt/kvm/iommu.c
@@ -107,6 +107,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot)
*/
pfn = kvm_pin_pages(slot, gfn, page_size);
if (is_error_pfn(pfn)) {
+ kvm_release_pfn_clean(pfn);
gfn += 1;
continue;
}
@@ -300,6 +301,12 @@ static void kvm_iommu_put_pages(struct kvm *kvm,
/* Get physical address */
phys = iommu_iova_to_phys(domain, gfn_to_gpa(gfn));
+
+ if (!phys) {
+ gfn++;
+ continue;
+ }
+
pfn = phys >> PAGE_SHIFT;
/* Unmap address from IO address space */