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MIPS: Malta: Select 32bit DMA zone for 64-bit kernels 

Enable the 32-bit DMA zone for 64-bit Malta kernels so that devices with
32-bit coherent DMA masks aren't constrained to the low 16MB DMA zone,
which can easily be exhausted when there is lots of static kernel data
due to lock and RCU debugging.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9890/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
hifive-unleashed-5.1
James Hogan 2015-04-27 15:07:19 +01:00 committed by Ralf Baechle
parent 8fe4908b83
commit abcc82b19f
1 changed files with 1 additions and 0 deletions
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arch/mips/Kconfig
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@ -440,6 +440,7 @@ config MIPS_MALTA
select SYS_SUPPORTS_MULTITHREADING
select SYS_SUPPORTS_SMARTMIPS
select SYS_SUPPORTS_ZBOOT
select ZONE_DMA32 if 64BIT
help
This enables support for the MIPS Technologies Malta evaluation
board.