Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'dma-mapping-5.18-2' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fix from Christoph Hellwig:
- avoid a double memory copy for swiotlb (Chao Gao)
* tag 'dma-mapping-5.18-2' of git://git.infradead.org/users/hch/dma-mapping:
dma-direct: avoid redundant memory sync for swiotlb
+2
-1
+2
-1
kernel/dma/direct.h
+2
-1
kernel/dma/direct.h
···
114
114
dma_direct_sync_single_for_cpu(dev, addr, size, dir);
115
115
116
116
if (unlikely(is_swiotlb_buffer(dev, phys)))
117
-
swiotlb_tbl_unmap_single(dev, phys, size, dir, attrs);
117
+
swiotlb_tbl_unmap_single(dev, phys, size, dir,
118
+
attrs | DMA_ATTR_SKIP_CPU_SYNC);
118
119
}
119
120
#endif /* _KERNEL_DMA_DIRECT_H */