From: Will Deacon <will.deacon@arm.com>
Date: Fri, 18 Feb 2011 15:36:35 +0000 (+0100)
Subject: ARM: 6743/1: errata: interrupted ICALLUIS may prevent completion of broadcasted operation
X-Git-Tag: v2.6.38-rc6~13^2~12
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a27c27ce49df72b1b0062e2ad192a804e1b069b;p=pandora-kernel.git

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>
---

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