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authorXiao Guangrong <xiaoguangrong.eric@gmail.com>2011-11-24 19:04:35 +0800
committerAvi Kivity <avi@redhat.com>2011-12-27 11:17:39 +0200
commit28a37544fb0223eb9805d2567b88f7360edec52a (patch)
tree83afb64f8448303f9486eb6c87980695611275ab /virt
parentbe6ba0f0962a39091c52eb9167ddea201fe80716 (diff)
KVM: introduce id_to_memslot function
Introduce id_to_memslot to get memslot by slot id 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/kvm_main.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4c2900c5d81..7b608499942 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -634,8 +634,9 @@ void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new)
{
if (new) {
int id = new->id;
+ struct kvm_memory_slot *old = id_to_memslot(slots, id);
- slots->memslots[id] = *new;
+ *old = *new;
if (id >= slots->nmemslots)
slots->nmemslots = id + 1;
}
@@ -681,7 +682,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)
goto out;
- memslot = &kvm->memslots->memslots[mem->slot];
+ memslot = id_to_memslot(kvm->memslots, mem->slot);
base_gfn = mem->guest_phys_addr >> PAGE_SHIFT;
npages = mem->memory_size >> PAGE_SHIFT;
@@ -788,12 +789,16 @@ skip_lpage:
#endif /* not defined CONFIG_S390 */
if (!npages) {
+ struct kvm_memory_slot *slot;
+
r = -ENOMEM;
slots = kmemdup(kvm->memslots, sizeof(struct kvm_memslots),
GFP_KERNEL);
if (!slots)
goto out_free;
- slots->memslots[mem->slot].flags |= KVM_MEMSLOT_INVALID;
+ slot = id_to_memslot(slots, mem->slot);
+ slot->flags |= KVM_MEMSLOT_INVALID;
+
update_memslots(slots, NULL);
old_memslots = kvm->memslots;
@@ -897,7 +902,7 @@ int kvm_get_dirty_log(struct kvm *kvm,
if (log->slot >= KVM_MEMORY_SLOTS)
goto out;
- memslot = &kvm->memslots->memslots[log->slot];
+ memslot = id_to_memslot(kvm->memslots, log->slot);
r = -ENOENT;
if (!memslot->dirty_bitmap)
goto out;