diff options
Diffstat (limited to 'virt/kvm/kvm_main.c')
| -rw-r--r-- | virt/kvm/kvm_main.c | 42 |
1 files changed, 17 insertions, 25 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 538fd57ea339..af2730858ebd 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1668,29 +1668,6 @@ out_slots: return r; } -static int kvm_delete_memslot(struct kvm *kvm, - const struct kvm_userspace_memory_region *mem, - struct kvm_memory_slot *old, int as_id) -{ - struct kvm_memory_slot new; - - if (!old->npages) - return -EINVAL; - - if (WARN_ON_ONCE(kvm->nr_memslot_pages < old->npages)) - return -EIO; - - memset(&new, 0, sizeof(new)); - new.id = old->id; - /* - * This is only for debugging purpose; it should never be referenced - * for a removed memslot. - */ - new.as_id = as_id; - - return kvm_set_memslot(kvm, mem, &new, as_id, KVM_MR_DELETE); -} - /* * Allocate some memory and give it an address in the guest physical address * space. @@ -1747,8 +1724,23 @@ int __kvm_set_memory_region(struct kvm *kvm, old.id = id; } - if (!mem->memory_size) - return kvm_delete_memslot(kvm, mem, &old, as_id); + if (!mem->memory_size) { + if (!old.npages) + return -EINVAL; + + if (WARN_ON_ONCE(kvm->nr_memslot_pages < old.npages)) + return -EIO; + + memset(&new, 0, sizeof(new)); + new.id = id; + /* + * This is only for debugging purpose; it should never be + * referenced for a removed memslot. + */ + new.as_id = as_id; + + return kvm_set_memslot(kvm, mem, &new, as_id, KVM_MR_DELETE); + } new.as_id = as_id; new.id = id; |