KVM: set_memory_region: Refactor prepare_memory_region()

This patch drops the parameter old, a copy of the old memory slot, and
adds a new parameter named change to know the change being requested.

This not only cleans up the code but also removes extra copying of the
memory slot structure.

Signed-off-by: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index c7979ed41923..8f85bae862c7 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -856,7 +856,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
                 slots = old_memslots;
         }
 
-        r = kvm_arch_prepare_memory_region(kvm, &new, old, mem);
+        r = kvm_arch_prepare_memory_region(kvm, &new, mem, change);
         if (r)
                 goto out_slots;