summaryrefslogtreecommitdiff
path: root/arch/arm/Kconfig
diff options
context:
space:
mode:
authorWill Deacon <will.deacon@arm.com>2011-02-18 16:36:35 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-02-19 11:24:12 +0000
commit9a27c27ce49df72b1b0062e2ad192a804e1b069b (patch)
tree5b9a40505271f8d0fa2c685e75300fd661a74948 /arch/arm/Kconfig
parent71efb063f4a145ae420be054f5a91dcf7c19b375 (diff)
ARM: 6743/1: errata: interrupted ICALLUIS may prevent completion of broadcasted operation
On versions of the Cortex-A9 prior to r3p0, an interrupted ICIALLUIS operation may prevent the completion of a following broadcasted operation if the second operation is received by a CPU before the ICIALLUIS has completed, potentially leading to corrupted entries in the cache or TLB. This workaround sets a bit in the diagnostic register of the Cortex-A9, causing CP15 maintenance operations to be uninterruptible. Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index ba9fc213f344..166efa2a19cd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1177,6 +1177,16 @@ config ARM_ERRATA_743622
visible impact on the overall performance or power consumption of the
processor.
+config ARM_ERRATA_751472
+ bool "ARM errata: Interrupted ICIALLUIS may prevent completion of broadcasted operation"
+ depends on CPU_V7 && SMP
+ help
+ This option enables the workaround for the 751472 Cortex-A9 (prior
+ to r3p0) erratum. An interrupted ICIALLUIS operation may prevent the
+ completion of a following broadcasted operation if the second
+ operation is received by a CPU before the ICIALLUIS has completed,
+ potentially leading to corrupted entries in the cache or TLB.
+
config ARM_ERRATA_753970
bool "ARM errata: cache sync operation may be faulty"
depends on CACHE_PL310