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| author | Stepan Moskovchenko <stepanm@codeaurora.org> | 2010-11-16 02:46:10 +0100 |
|---|---|---|
| committer | Daniel Walker <dwalker@codeaurora.org> | 2010-12-01 01:03:16 +0100 |
| commit | 2607b0a26094b2d2d174c3e27b2ecc9c49d86f40 (patch) | |
| tree | a678fe432fed89274cf0e05aab62146cb7b42a39 /arch/arm/mach-msm | |
| parent | msm: iommu: Don't flush page tables if no devices attached (diff) | |
| download | linux-2607b0a26094b2d2d174c3e27b2ecc9c49d86f40.tar.xz linux-2607b0a26094b2d2d174c3e27b2ecc9c49d86f40.zip | |
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>
Diffstat (limited to 'arch/arm/mach-msm')
| -rw-r--r-- | arch/arm/mach-msm/Kconfig | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig index dbbcfeb919db..1c6f76b3d1ac 100644 --- a/arch/arm/mach-msm/Kconfig +++ b/arch/arm/mach-msm/Kconfig @@ -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 |