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msm: iommu: Kconfig item for cacheable page tables

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Add a Kconfig item to allow the IOMMU page tables to be
coherent in the L2 cache. This generally reduces IOTLB miss
latencies and has been shown to improve multimedia
performance.

Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
This commit is contained in:
Stepan Moskovchenko 2010-11-15 17:46:10 -08:00 committed by Daniel Walker
parent f6f41eb9cc
commit 2607b0a260
1 changed files with 4 additions and 0 deletions
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4
arch/arm/mach-msm/Kconfig
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@ -122,6 +122,10 @@ config MACH_MSM8X60_FFA
endmenu
config IOMMU_PGTABLES_L2
def_bool y
depends on ARCH_MSM8X60 && MMU && SMP && CPU_DCACHE_DISABLE=n
config MSM_DEBUG_UART
int
default 1 if MSM_DEBUG_UART1