diff options
| author | Xuan Zhuo <[email protected]> | 2023-09-27 13:52:46 +0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2023-10-15 11:49:57 -0700 |
| commit | 5720c43d5216b5dbd9ab25595f7c61e55d36d4fc (patch) | |
| tree | 1a29a9fd69ded0883431ba38d619ffeb960c5b6e /arch/x86/kernel/cpu/microcode/amd.c | |
| parent | 11d3f72613957cba0783938a1ceddffe7dbbf5a1 (diff) | |
virtio_net: fix the missing of the dma cpu sync
Commit 295525e29a5b ("virtio_net: merge dma operations when filling
mergeable buffers") unmaps the buffer with DMA_ATTR_SKIP_CPU_SYNC when
the dma->ref is zero. We do that with DMA_ATTR_SKIP_CPU_SYNC, because we
do not want to do the sync for the entire page_frag. But that misses the
sync for the current area.
This patch does cpu sync regardless of whether the ref is zero or not.
Fixes: 295525e29a5b ("virtio_net: merge dma operations when filling mergeable buffers")
Reported-by: Michael Roth <[email protected]>
Closes: http://lore.kernel.org/all/[email protected]
Signed-off-by: Xuan Zhuo <[email protected]>
Acked-by: Jason Wang <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'arch/x86/kernel/cpu/microcode/amd.c')
0 files changed, 0 insertions, 0 deletions