Christoph Hellwig 33dcb37cef dma-mapping: fix page attributes for dma_mmap_* ... All the way back to introducing dma_common_mmap we've defaulted to mark the pages as uncached. But this is wrong for DMA coherent devices. Later on DMA_ATTR_WRITE_COMBINE also got incorrect treatment as that flag is only treated special on the alloc side for non-coherent devices. Introduce a new dma_pgprot helper that deals with the check for coherent devices so that only the remapping cases ever reach arch_dma_mmap_pgprot and we thus ensure no aliasing of page attributes happens, which makes the powerpc version of arch_dma_mmap_pgprot obsolete and simplifies the remaining ones. Note that this means arch_dma_mmap_pgprot is a bit misnamed now, but we'll phase it out soon. Fixes: 64ccc9c033 ("common: dma-mapping: add support for generic dma_mmap_* calls") Reported-by: Shawn Anastasio <shawn@anastas.io> Reported-by: Gavin Li <git@thegavinli.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Catalin Marinas <catalin.marinas@arm.com> # arm64		2019-08-10 19:52:45 +02:00
..
cache.S	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
context.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
copypage.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
dma-mapping.c	dma-mapping: fix page attributes for dma_mmap_*	2019-08-10 19:52:45 +02:00
dump.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441	2019-06-05 17:37:17 +02:00
extable.c
fault.c	arm64: Make debug exception handlers visible from RCU	2019-08-02 11:56:01 +01:00
flush.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
hugetlbpage.c	arm64/hugetlb: Use macros for contiguous huge page sizes	2019-06-03 16:58:37 +01:00
init.c	arm64 updates for 5.3:	2019-07-08 09:54:55 -07:00
ioremap.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
kasan_init.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
Makefile
mmap.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
mmu.c	mm/memory_hotplug: allow arch_remove_memory() without CONFIG_MEMORY_HOTREMOVE	2019-07-18 17:08:06 -07:00
numa.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
pageattr.c	mm/pgtable: drop pgtable_t variable from pte_fn_t functions	2019-07-12 11:05:46 -07:00
pgd.c	arm64: switch to generic version of pte allocation	2019-07-12 11:05:45 -07:00
physaddr.c
proc.S	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
ptdump_debugfs.c