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| author | Christoph Hellwig <hch@lst.de> | 2018-04-03 16:26:52 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-05-09 06:57:04 +0200 |
| commit | 4965a68780c5ccad4082434e264953fba0f9bcf6 (patch) | |
| tree | ac41ea46126ea2c1852e66d89c0f2e7fb2c4dcb2 /lib/Kconfig | |
| parent | d4a451d5fc849f9a0a133255ed197b148fc323d0 (diff) | |
| download | lwn-4965a68780c5ccad4082434e264953fba0f9bcf6.tar.gz lwn-4965a68780c5ccad4082434e264953fba0f9bcf6.zip | |
arch: define the ARCH_DMA_ADDR_T_64BIT config symbol in lib/Kconfig
Define this symbol if the architecture either uses 64-bit pointers or the
PHYS_ADDR_T_64BIT is set. This covers 95% of the old arch magic. We only
need an additional select for Xen on ARM (why anyway?), and we now always
set ARCH_DMA_ADDR_T_64BIT on mips boards with 64-bit physical addressing
instead of only doing it when highmem is set.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: James Hogan <jhogan@kernel.org>
Diffstat (limited to 'lib/Kconfig')
| -rw-r--r-- | lib/Kconfig | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index ce9fa962d59b..1f12faf03819 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -435,6 +435,9 @@ config NEED_SG_DMA_LENGTH config NEED_DMA_MAP_STATE bool +config ARCH_DMA_ADDR_T_64BIT + def_bool 64BIT || PHYS_ADDR_T_64BIT + config IOMMU_HELPER bool |