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authorMarcelo Tosatti <mtosatti@redhat.com>2012-08-24 15:54:58 -0300
committerAvi Kivity <avi@redhat.com>2012-09-06 16:37:27 +0300
commit12d6e7538e2d418c08f082b1b44ffa5fb7270ed8 (patch)
treef548812d6c74416d6b4f2cae1d88c06cf56c0f96 /virt
parent2df72e9bc4c505d8357012f2924589f3d16f9d44 (diff)
downloadvexpress-lsk-12d6e7538e2d418c08f082b1b44ffa5fb7270ed8.tar.gz
KVM: perform an invalid memslot step for gpa base change
PPC must flush all translations before the new memory slot is visible. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index a4bf05be5fe..f41ea1262d5 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -791,7 +791,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
/* destroy any largepage mappings for dirty tracking */
}
- if (!npages) {
+ if (!npages || base_gfn != old.base_gfn) {
struct kvm_memory_slot *slot;
r = -ENOMEM;
@@ -807,8 +807,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
old_memslots = kvm->memslots;
rcu_assign_pointer(kvm->memslots, slots);
synchronize_srcu_expedited(&kvm->srcu);
- /* From this point no new shadow pages pointing to a deleted
- * memslot will be created.
+ /* From this point no new shadow pages pointing to a deleted,
+ * or moved, memslot will be created.
*
* validation of sp->gfn happens in:
* - gfn_to_hva (kvm_read_guest, gfn_to_pfn)