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Date: Thu, 23 Jul 2015 02:48:02 +0200 From: Sebastian Reichel <sre@...nel.org> To: Tony Lindgren <tony@...mide.com>, Russell King <rmk+kernel@....linux.org.uk> Cc: linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org, Sebastian Reichel <sre@...nel.org> 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 <sre@...nel.org> --- 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" -- 2.1.4 -- 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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