msm: iommu: Kconfig item for cacheable page tables
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>
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index dbbcfeb..1c6f76b 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -122,6 +122,10 @@
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