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linux/kernel/dma
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Claire Chang 0b84e4f8b7 swiotlb: Add restricted DMA pool initialization 
Add the initialization function to create restricted DMA pools from
matching reserved-memory nodes.

Regardless of swiotlb setting, the restricted DMA pool is preferred if
available.

The restricted DMA pools provide a basic level of protection against the
DMA overwriting buffer contents at unexpected times. However, to protect
against general data leakage and system memory corruption, the system
needs to provide a way to lock down the memory access, e.g., MPU.

Signed-off-by: Claire Chang <tientzu@chromium.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Stefano Stabellini <sstabellini@kernel.org>
Tested-by: Will Deacon <will@kernel.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2021-07-13 20:04:50 -04:00
..
coherent.c
dma-mapping: remove a trailing space
2021-06-22 08:15:46 +02:00
contiguous.c
dma-contiguous: fix a typo error in a comment
2020-11-27 10:33:42 +01:00
debug.c
dma-debug: report -EEXIST errors in add_dma_entry
2021-06-22 08:15:47 +02:00
debug.h
dma-mapping: move dma-debug.h to kernel/dma/
2020-10-06 07:07:05 +02:00
direct.c
swiotlb: Add restricted DMA alloc/free support
2021-07-13 20:04:48 -04:00
direct.h
swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing
2021-07-13 20:04:43 -04:00
dummy.c
dma-mapping: split <linux/dma-mapping.h>
2020-10-06 07:07:03 +02:00
Kconfig
swiotlb: Add restricted DMA pool initialization
2021-07-13 20:04:50 -04:00
Makefile
dma-mapping updates for 5.11:
2020-12-22 13:19:43 -08:00
map_benchmark.c
dma-mapping: benchmark: Add support for multi-pages map/unmap
2021-04-02 16:41:08 +02:00
mapping.c
dma-mapping: add a dma_alloc_noncontiguous API
2021-03-15 10:02:31 +01:00
ops_helpers.c
dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h>
2020-10-06 07:07:06 +02:00
pool.c
dma-pool: no need to check return value of debugfs_create functions
2020-11-27 10:33:42 +01:00
remap.c
kernel/dma: remove unnecessary unmap_kernel_range
2021-04-30 11:20:40 -07:00
swiotlb.c
swiotlb: Add restricted DMA pool initialization
2021-07-13 20:04:50 -04:00