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| author | Scott Wood <scottwood@freescale.com> | 2014-08-08 18:40:42 -0500 |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2014-09-03 17:58:21 -0500 |
| commit | 1c98025c6c95bc057a25e2c6596de23288c68160 (patch) | |
| tree | 37475259871168c9835b78ecd3d233f870945fa1 /arch/powerpc/Kconfig | |
| parent | 78eb9094ca08a40b8f9d3e113a2b88e0b7dbad1d (diff) | |
| download | lwn-1c98025c6c95bc057a25e2c6596de23288c68160.tar.gz lwn-1c98025c6c95bc057a25e2c6596de23288c68160.zip | |
powerpc: Dynamic DMA zone limits
Platform code can call limit_zone_pfn() to set appropriate limits
for ZONE_DMA and ZONE_DMA32, and dma_direct_alloc_coherent() will
select a suitable zone based on a device's mask and the pfn limits that
platform code has configured.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Diffstat (limited to 'arch/powerpc/Kconfig')
| -rw-r--r-- | arch/powerpc/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index bd6dd6ed3a9f..d003409b5f98 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -285,6 +285,10 @@ config PPC_EMULATE_SSTEP bool default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT +config ZONE_DMA32 + bool + default y if PPC64 + source "init/Kconfig" source "kernel/Kconfig.freezer" |