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yaml
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r: 67280
b: refs/heads/master
c: 768cc2d
h: refs/heads/master
v: v3
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Linas Vepstas authored and Paul Mackerras committed Sep 13, 2007
1 parent 351be3f commit 8ca5b74
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: b2315372eac9cd9f622c32a93e323cf6f0f03462
refs/heads/master: 768cc2d3b2768ca34f254e8190f1f9e297b09ad4
11 changes: 6 additions & 5 deletions trunk/arch/powerpc/Kconfig
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Expand Up @@ -181,16 +181,17 @@ config MATH_EMULATION
instructions to run.

config IOMMU_VMERGE
bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
depends on EXPERIMENTAL && PPC64
default n
bool "Enable IOMMU virtual merging"
depends on PPC64
default y
help
Cause IO segments sent to a device for DMA to be merged virtually
by the IOMMU when they happen to have been allocated contiguously.
This doesn't add pressure to the IOMMU allocator. However, some
drivers don't support getting large merged segments coming back
from *_map_sg(). Say Y if you know the drivers you are using are
properly handling this case.
from *_map_sg().

Most drivers don't have this problem; it is safe to say Y here.

config HOTPLUG_CPU
bool "Support for enabling/disabling CPUs"
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