Takuya Yoshikawa 7bb44401c5 KVM: fix the handling of dirty bitmaps to avoid overflows ...

(Cherry-picked from commit 87bf6e7de1)

Int is not long enough to store the size of a dirty bitmap.

This patch fixes this problem with the introduction of a wrapper
function to calculate the sizes of dirty bitmaps.

Note: in mark_page_dirty(), we have to consider the fact that
  __set_bit() takes the offset as int, not long.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2010-04-26 07:41:37 -07:00

..

kvm

KVM: fix the handling of dirty bitmaps to avoid overflows

2010-04-26 07:41:37 -07:00