diff options
author | Keir Fraser <Keir.Fraser@cl.cam.ac.uk> | 2007-07-21 04:37:24 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-21 17:49:14 -0700 |
commit | df336d1c7b6fd510fa6d3a028f999e7586c7026e (patch) | |
tree | d393ccb7b9051e8e491136f7a4a1786d5bf4f1e8 /include/xen | |
parent | 28de7948a896763bc97ccd416bba5b9422158350 (diff) |
Fix swiotlb_sync_single_range()
If the swiotlb maps a multi-slab region, swiotlb_sync_single_range() can be
invoked to sync a sub-region which does not include the first slab.
Unfortunately io_tlb_orig_addr[] is only initialised for the first slab,
and hence the call to sync_single() will read a garbage orig_addr in this
case.
This patch fixes the issue by initialising all mapped slabs in
io_tlb_orig_addr[]. It also correctly adjusts the buffer pointer in
sync_single() to handle the case that the given dma_addr is not aligned on
a slab boundary.
Signed-off-by: Keir Fraser <keir.fraser@cl.cam.ac.uk>
Cc: "Luck, Tony" <tony.luck@intel.com>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/xen')
0 files changed, 0 insertions, 0 deletions