diff options
| author | Marcelo Tosatti <mtosatti@redhat.com> | 2012-08-24 15:54:58 -0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-01-03 04:33:35 +0000 |
| commit | c2152747e746aceaa85360eb20b719a835c9d101 (patch) | |
| tree | 46f108f0bce2454f0e3c3c1af04408440080718e /virt | |
| parent | d1b8de7813fc2127dc16cd9f282bb63611583997 (diff) | |
KVM: perform an invalid memslot step for gpa base change
commit 12d6e7538e2d418c08f082b1b44ffa5fb7270ed8 upstream.
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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index bfa8e1e75a4..a31166097dc 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -774,7 +774,7 @@ skip_lpage: new.userspace_addr = mem->userspace_addr; #endif /* not defined CONFIG_S390 */ - if (!npages) { + if (!npages || base_gfn != old.base_gfn) { r = -ENOMEM; slots = kzalloc(sizeof(struct kvm_memslots), GFP_KERNEL); if (!slots) @@ -788,8 +788,8 @@ skip_lpage: 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) |