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Re: [3.13-rc regression] Unbreak Loongson2 and r4k-generic flush icache

To: Sergei Shtylyov <>
Subject: Re: [3.13-rc regression] Unbreak Loongson2 and r4k-generic flush icache range
From: Alexandre Oliva <>
Date: Tue, 14 Jan 2014 08:01:22 -0200
Cc: Ralf Baechle <>,,
In-reply-to: <> (Sergei Shtylyov's message of "Mon, 13 Jan 2014 17:31:07 +0400")
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On Jan 13, 2014, Sergei Shtylyov <> wrote:

> Hello.

>> Commit 14bd8c08, that replaced Loongson2-specific ifdefs with cpu tests,
>> inverted the CPU test in local_r4k_flush_icache_range.  Loongson2 won't
>> boot up using the generic icache flush code.  Presumably other CPUs
>> might face other problems when presented with Loongson2-specific icache
>> flush code too.  This patch enabled my Yeeloong to boot up successfully
>> a 3.13-rc kernel for the first time, after a long git bisect session.

>> Signed-off-by: Alexandre Oliva <>

>    Fix for this issue has been posted long ago:


Thanks.  As long ago as that was, I still don't see it in Torvalds's
master branch.  Was a pull request including this patch ever send his
way?  Such a trivial fix for such a show-stopper shouldn't find any
difficulties making 3.13, I think.

Alexandre Oliva, freedom fighter
You must be the change you wish to see in the world. -- Gandhi
Be Free! --   FSF Latin America board member
Free Software Evangelist      Red Hat Brazil Compiler Engineer

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