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arch: define the ARCH_DMA_ADDR_T_64BIT config symbol in lib/Kconfig

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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>
This commit is contained in:
Christoph Hellwig
2018-04-03 16:26:52 +02:00
parent d4a451d5fc
commit 4965a68780
19 changed files with 3 additions and 42 deletions
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arch/arm/mach-tegra/Kconfig
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@@ -15,6 +15,5 @@ menuconfig ARCH_TEGRA
select RESET_CONTROLLER
select SOC_BUS
select ZONE_DMA if ARM_LPAE
select ARCH_DMA_ADDR_T_64BIT if ARM_LPAE
help
This enables support for NVIDIA Tegra based systems.