diff options
| author | Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> | 2013-01-11 10:27:43 +0100 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-01-17 13:27:59 +0100 |
| commit | a843fac2536d6d81335d7011dd7ec4e438161dd7 (patch) | |
| tree | bf08a9989c45f2e7e5d454eae5868b9efd5d630f /virt | |
| parent | KVM: set_memory_region: Don't check for overlaps unless we create or move a slot (diff) | |
| download | linux-a843fac2536d6d81335d7011dd7ec4e438161dd7.tar.xz linux-a843fac2536d6d81335d7011dd7ec4e438161dd7.zip | |
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>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/kvm_main.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index fca64879f967..5e709ebb7c40 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -728,7 +728,7 @@ int __kvm_set_memory_region(struct kvm *kvm, 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 @@ int __kvm_set_memory_region(struct kvm *kvm, 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 @@ int __kvm_set_memory_region(struct kvm *kvm, 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 @@ int __kvm_set_memory_region(struct kvm *kvm, /* 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 @@ int __kvm_set_memory_region(struct kvm *kvm, } if (!npages || base_gfn != old.base_gfn) { - struct kvm_memory_slot *slot; - r = -ENOMEM; slots = kmemdup(kvm->memslots, sizeof(struct kvm_memslots), GFP_KERNEL); |