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metag/asm/irq.h: Declare init_IRQ
[deliverable/linux.git]
/
mm
/
Kconfig
diff --git
a/mm/Kconfig
b/mm/Kconfig
index 3bea74f1ccfe1f1f5c134fd5c98767d620553b60..e742d06285b780eea632efe643e18d695f766928 100644
(file)
--- a/
mm/Kconfig
+++ b/
mm/Kconfig
@@
-263,8
+263,14
@@
config ZONE_DMA_FLAG
default "1"
config BOUNCE
default "1"
config BOUNCE
- def_bool y
+ bool "Enable bounce buffers"
+ default y
depends on BLOCK && MMU && (ZONE_DMA || HIGHMEM)
depends on BLOCK && MMU && (ZONE_DMA || HIGHMEM)
+ help
+ Enable bounce buffers for devices that cannot access
+ the full range of memory available to the CPU. Enabled
+ by default when ZONE_DMA or HIGHMEM is selected, but you
+ may say n to override this.
# On the 'tile' arch, USB OHCI needs the bounce pool since tilegx will often
# have more than 4GB of memory, but we don't currently use the IOTLB to present
# On the 'tile' arch, USB OHCI needs the bounce pool since tilegx will often
# have more than 4GB of memory, but we don't currently use the IOTLB to present
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