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Date: Mon, 15 Nov 2010 17:46:10 -0800 From: Stepan Moskovchenko <stepanm@...eaurora.org> To: dwalker@...eaurora.org Cc: davidb@...eaurora.org, bryanh@...eaurora.org, linux-arm-msm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Stepan Moskovchenko <stepanm@...eaurora.org> Subject: [PATCH 09/14 v2] 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@...eaurora.org> --- 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 dbbcfeb..1c6f76b 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 -- 1.7.0.2 Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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