path: root/virt/kvm
diff options
authorCarsten Otte <cotte@de.ibm.com>2008-06-27 15:05:31 +0200
committerAvi Kivity <avi@qumranet.com>2008-07-20 12:42:36 +0300
commiteff0114ac3d3a20a5c93b31b00134e59bfc75189 (patch)
tree32272e088d90148842b260c650d4c66e2b5d91a5 /virt/kvm
parentf8b78fa3d406f3a2dc038e2b47749013a9295994 (diff)
KVM: s390: dont allocate dirty bitmap
This patch #ifdefs the bitmap array for dirty tracking. We don't have dirty tracking on s390 today, and we'd love to use our storage keys to store the dirty information for migration. Therefore, we won't need this array at all, and due to our limited amount of vmalloc space this limits the amount of guests we can run. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'virt/kvm')
1 files changed, 2 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 7d10dfa0d38..9ccaf8f5402 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -359,6 +359,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
r = -ENOMEM;
/* Allocate if a slot is being created */
+#ifndef CONFIG_S390
if (npages && !new.rmap) {
new.rmap = vmalloc(npages * sizeof(struct page *));
@@ -399,6 +400,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
goto out_free;
memset(new.dirty_bitmap, 0, dirty_bytes);
+#endif /* not defined CONFIG_S390 */
if (mem->slot >= kvm->nmemslots)
kvm->nmemslots = mem->slot + 1;