From cd1a4a982a78e793125db2f386e91dc7c89c9ed1 Mon Sep 17 00:00:00 2001 From: Uri Lublin Date: Thu, 22 Feb 2007 16:43:09 +0200 Subject: [PATCH] KVM: Fix dirty page log bitmap size/access calculation Since dirty_bitmap is an unsigned long array, the alignment and size need to take that into account. Signed-off-by: Uri Lublin Signed-off-by: Avi Kivity --- drivers/kvm/kvm_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index edff4055b32..e7108105c50 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -792,9 +792,9 @@ static int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, if (!memslot->dirty_bitmap) goto out; - n = ALIGN(memslot->npages, 8) / 8; + n = ALIGN(memslot->npages, BITS_PER_LONG) / 8; - for (i = 0; !any && i < n; ++i) + for (i = 0; !any && i < n/sizeof(long); ++i) any = memslot->dirty_bitmap[i]; r = -EFAULT; -- 2.41.1