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 <[email protected]>
Acked-by: James Hogan <[email protected]>
This commit is contained in:
Christoph Hellwig 2018-04-03 16:26:52 +02:00
commit 4965a68780
19 changed files with 3 additions and 42 deletions

View file

@ -66,9 +66,6 @@ config ZONE_DMA
bool
default y
config ARCH_DMA_ADDR_T_64BIT
def_bool y
config GENERIC_ISA_DMA
bool
default y