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-rw-r--r--virt/kvm/kvm_main.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 9ad94c9996e7..b5ed7770ced3 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -630,6 +630,19 @@ static int kvm_create_dirty_bitmap(struct kvm_memory_slot *memslot)
}
#endif /* !CONFIG_S390 */
+void update_memslots(struct kvm_memslots *slots, struct kvm_memory_slot *new)
+{
+ if (new) {
+ int id = new->id;
+
+ slots->memslots[id] = *new;
+ if (id >= slots->nmemslots)
+ slots->nmemslots = id + 1;
+ }
+
+ slots->generation++;
+}
+
/*
* Allocate some memory and give it an address in the guest physical address
* space.
@@ -780,10 +793,8 @@ skip_lpage:
GFP_KERNEL);
if (!slots)
goto out_free;
- if (mem->slot >= slots->nmemslots)
- slots->nmemslots = mem->slot + 1;
- slots->generation++;
slots->memslots[mem->slot].flags |= KVM_MEMSLOT_INVALID;
+ update_memslots(slots, NULL);
old_memslots = kvm->memslots;
rcu_assign_pointer(kvm->memslots, slots);
@@ -815,9 +826,6 @@ skip_lpage:
GFP_KERNEL);
if (!slots)
goto out_free;
- if (mem->slot >= slots->nmemslots)
- slots->nmemslots = mem->slot + 1;
- slots->generation++;
/* actual memory is freed via old in kvm_free_physmem_slot below */
if (!npages) {
@@ -827,7 +835,7 @@ skip_lpage:
new.lpage_info[i] = NULL;
}
- slots->memslots[mem->slot] = new;
+ update_memslots(slots, &new);
old_memslots = kvm->memslots;
rcu_assign_pointer(kvm->memslots, slots);
synchronize_srcu_expedited(&kvm->srcu);