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518a2f1925
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Christoph Hellwig 518a2f1925 dma-mapping: zero memory returned from dma_alloc_* 
If we want to map memory from the DMA allocator to userspace it must be
zeroed at allocation time to prevent stale data leaks.   We already do
this on most common architectures, but some architectures don't do this
yet, fix them up, either by passing GFP_ZERO when we use the normal page
allocator or doing a manual memset otherwise.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Acked-by: Sam Ravnborg <sam@ravnborg.org> [sparc]
2018-12-20 08:13:52 +01:00
..
alpha dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
arc dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
arm dma-mapping: bypass indirect calls for dma-direct 2018-12-13 21:06:18 +01:00
arm64 arm64: default to the direct mapping in get_arch_dma_ops 2018-12-19 18:00:12 +01:00
c6x dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
csky dma-mapping: always build the direct mapping code 2018-12-13 21:06:11 +01:00
h8300 dma-mapping: always build the direct mapping code 2018-12-13 21:06:11 +01:00
hexagon dma-mapping: always build the direct mapping code 2018-12-13 21:06:11 +01:00
ia64 ia64: only select ARCH_HAS_DMA_COHERENT_TO_PFN if swiotlb is enabled 2018-12-15 11:01:25 +01:00
m68k dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
microblaze dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
mips dma-mapping: bypass indirect calls for dma-direct 2018-12-13 21:06:18 +01:00
nds32 dma-mapping: always build the direct mapping code 2018-12-13 21:06:11 +01:00
nios2 dma-mapping: always build the direct mapping code 2018-12-13 21:06:11 +01:00
openrisc dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
parisc dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
powerpc dma-direct: merge swiotlb_dma_ops into the dma_direct code 2018-12-13 21:06:17 +01:00
riscv dma-direct: merge swiotlb_dma_ops into the dma_direct code 2018-12-13 21:06:17 +01:00
s390 dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
sh dma-mapping: always build the direct mapping code 2018-12-13 21:06:11 +01:00
sparc dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
um for-linus-20181109 2018-11-09 16:31:51 -06:00
unicore32 dma-mapping: always build the direct mapping code 2018-12-13 21:06:11 +01:00
x86 dma-mapping: bypass indirect calls for dma-direct 2018-12-13 21:06:18 +01:00
xtensa dma-mapping: zero memory returned from dma_alloc_* 2018-12-20 08:13:52 +01:00
.gitignore
Kconfig New gcc plugin: stackleak 2018-11-01 11:46:27 -07:00