Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753615AbbGWAsY (ORCPT ); Wed, 22 Jul 2015 20:48:24 -0400 Received: from ring0.de ([5.45.105.125]:60139 "EHLO ring0.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753512AbbGWAsW (ORCPT ); Wed, 22 Jul 2015 20:48:22 -0400 X-Spam-Report: * 0.0 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail * domains are different * -0.0 NO_RELAYS Informational: message was not relayed via SMTP * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 NO_RECEIVED Informational: message has no Received headers From: Sebastian Reichel To: Tony Lindgren , Russell King Cc: linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-kernel@vger.kernel.org, Sebastian Reichel Subject: [PATCH 2/3] ARM: update errata 430973 documentation Date: Thu, 23 Jul 2015 02:48:02 +0200 Message-Id: <1437612483-30160-3-git-send-email-sre@kernel.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1437612483-30160-1-git-send-email-sre@kernel.org> References: <1437612483-30160-1-git-send-email-sre@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1159 Lines: 31 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" -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/