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Subject[PATCH 2/3] ARM: update errata 430973 documentation
The Errata 430973 workaround config option only enables the
IBE bit, which should be done by the bootloader if possible.

Signed-off-by: Sebastian Reichel <>
arch/arm/Kconfig | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1c50210..0e4929b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1078,6 +1078,10 @@ config ARM_ERRATA_430973
and also flushes the branch target cache at every context switch.
Note that setting specific bits in the ACTLR register may not be
available in non-secure mode.
+ Instead of enabling this option, it is recommended to enable the
+ workaround by setting the IBE bit from the bootloader, since the
+ BTB/BTAC operations are always executed for context switches on
+ Cortex-A8.

config ARM_ERRATA_458693
bool "ARM errata: Processor deadlock when a false hazard is created"

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