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Users pace crash on Netlogic XLP II processors

To: "linux-mips@linux-mips.org" <linux-mips@linux-mips.org>
Subject: Users pace crash on Netlogic XLP II processors
From: Jacky <cao.zhong1@gmail.com>
Date: Tue, 26 Nov 2013 08:44:56 +0800
Cc: "ralf@linux-mips.org" <ralf@linux-mips.org>
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Recently I experienced user space crash on kernel 2.6.32 after executables and 
memory foot print grow over particular size. As I found the crash reason is 
inconsistent I-cache which the code is correct in memory (or L2) but definitely 
wrong in L1 I-cache.

Should I-cache invalidate happen during page reclaim? And Which cache flush 
hook responsible for it? The work around is ugly need invalidate I cache on 
every page fill.
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