KVM: set_memory_region: Remove unnecessary variable memslot
One such variable, slot, is enough for holding a pointer temporarily.
We also remove another local variable named slot, which is limited in
a block, since it is confusing to have the same name in this function.
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index fca6487..5e709eb 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -728,7 +728,7 @@
int r;
gfn_t base_gfn;
unsigned long npages;
- struct kvm_memory_slot *memslot, *slot;
+ struct kvm_memory_slot *slot;
struct kvm_memory_slot old, new;
struct kvm_memslots *slots = NULL, *old_memslots;
@@ -754,7 +754,7 @@
if (mem->guest_phys_addr + mem->memory_size < mem->guest_phys_addr)
goto out;
- memslot = id_to_memslot(kvm->memslots, mem->slot);
+ slot = id_to_memslot(kvm->memslots, mem->slot);
base_gfn = mem->guest_phys_addr >> PAGE_SHIFT;
npages = mem->memory_size >> PAGE_SHIFT;
@@ -765,7 +765,7 @@
if (!npages)
mem->flags &= ~KVM_MEM_LOG_DIRTY_PAGES;
- new = old = *memslot;
+ new = old = *slot;
new.id = mem->slot;
new.base_gfn = base_gfn;
@@ -786,7 +786,8 @@
/* Check for overlaps */
r = -EEXIST;
kvm_for_each_memslot(slot, kvm->memslots) {
- if (slot->id >= KVM_USER_MEM_SLOTS || slot == memslot)
+ if ((slot->id >= KVM_USER_MEM_SLOTS) ||
+ (slot->id == mem->slot))
continue;
if (!((base_gfn + npages <= slot->base_gfn) ||
(base_gfn >= slot->base_gfn + slot->npages)))
@@ -822,8 +823,6 @@
}
if (!npages || base_gfn != old.base_gfn) {
- struct kvm_memory_slot *slot;
-
r = -ENOMEM;
slots = kmemdup(kvm->memslots, sizeof(struct kvm_memslots),
GFP_KERNEL);