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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-13 16:35:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-13 16:35:33 -0700
commitd94bc4fc24ed6263746934ace161ab916818d38a (patch)
treed6c8045823efe4ef1599261e8451775b19dcfd00 /arch/arm/Kconfig
parent70813196581fc636cb8a49e9bba9e04bda76206e (diff)
parent06c10884486a63a1e4ff657aaa51e848e64b9dc3 (diff)
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: ARM: relax ioremap prohibition (309caa9) for -final and -stable ARM: 6440/1: ep93xx: DMA: fix channel_disable cpuimx27: fix i2c bus selection cpuimx27: fix compile when ULPI is selected ARM: 6435/1: Fix HWCAP_TLS flag for ARM11MPCore/Cortex-A9 ARM: 6436/1: AT91: Fix power-saving in idle-mode on 926T processors ARM: fix section mismatch warnings in Versatile Express ARM: 6412/1: kprobes-decode: add support for MOVW instruction ARM: 6419/1: mmu: Fix MT_MEMORY and MT_MEMORY_NONCACHED pte flags ARM: 6416/1: errata: faulty hazard checking in the Store Buffer may lead to data corruption
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 88c97bc7a6f..9c26ba7244f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1101,6 +1101,20 @@ config ARM_ERRATA_720789
invalidated are not, resulting in an incoherency in the system page
tables. The workaround changes the TLB flushing routines to invalidate
entries regardless of the ASID.
+
+config ARM_ERRATA_743622
+ bool "ARM errata: Faulty hazard checking in the Store Buffer may lead to data corruption"
+ depends on CPU_V7
+ help
+ This option enables the workaround for the 743622 Cortex-A9
+ (r2p0..r2p2) erratum. Under very rare conditions, a faulty
+ optimisation in the Cortex-A9 Store Buffer may lead to data
+ corruption. This workaround sets a specific bit in the diagnostic
+ register of the Cortex-A9 which disables the Store Buffer
+ optimisation, preventing the defect from occurring. This has no
+ visible impact on the overall performance or power consumption of the
+ processor.
+
endmenu
source "arch/arm/common/Kconfig"