diff options
| author | Kevin Wolf <kwolf@redhat.com> | 2014-07-09 19:17:30 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2014-07-14 12:03:21 +0200 |
| commit | 58f423fbd5f7f435e8dc56dfa565b043d20d1e1b (patch) | |
| tree | 7d9178c0b85596d3ea4b2565ce1054e8213ce423 /include | |
| parent | 80504dcaa11097b99842312014f5954a54fe1826 (diff) | |
dma-helpers: Fix too long qiov
If the size of the scatter/gather list isn't a multiple of 512, the
number of sectors for the block layer request is rounded down, resulting
in a qiov that doesn't match the request length. Truncate the qiov to the
new length of the request.
This fixes the IDE qtest case /x86_64/ide/bmdma/short_prdt.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/qemu-common.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/qemu-common.h b/include/qemu-common.h index ae76197532..6ef8282234 100644 --- a/include/qemu-common.h +++ b/include/qemu-common.h @@ -329,6 +329,7 @@ size_t qemu_iovec_memset(QEMUIOVector *qiov, size_t offset, int fillc, size_t bytes); ssize_t qemu_iovec_compare(QEMUIOVector *a, QEMUIOVector *b); void qemu_iovec_clone(QEMUIOVector *dest, const QEMUIOVector *src, void *buf); +void qemu_iovec_discard_back(QEMUIOVector *qiov, size_t bytes); bool buffer_is_zero(const void *buf, size_t len); |