| commit | ff5bfd4f4896c3f27dafcc4ae533b0d803968499 | |
| author | Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | |
| Mon, 12 Apr 2010 10:35:35 +0000 (12 19:35 +0900) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 26 Apr 2010 14:48:05 +0000 (26 07:48 -0700) | ||
| tree | 06ff00917d803d3112ec379d3b75ad2e778a8afc | treesnapshot (tar.gz zip) |
| parent | f1f52e1094fc4e39bfd3071e33803fbbf0543d49 | commitdiff |
KVM: fix the handling of dirty bitmaps to avoid overflows
(Cherry-picked from commit 87bf6e7de1134f48681fd2ce4b7c1ec45458cb6d)
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>
(Cherry-picked from commit 87bf6e7de1134f48681fd2ce4b7c1ec45458cb6d)
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>