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Re: RM7k cache_flush_sigtramp

To: Ralf Baechle <>
Subject: Re: RM7k cache_flush_sigtramp
From: Fuxin Zhang <>
Date: Fri, 01 Aug 2003 12:59:00 +0800
Cc: Adam Kiepul <>, MAKE FUN PRANK CALLS <>
In-reply-to: <>
Original-recipient: rfc822;
References: <9DFF23E1E33391449FDC324526D1F259017DF087@SJC1EXM02> <> <>
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624
I am using a slightly modified 2.4.21-pre4,based on cvs of early this month(?).
We have merged with latest cvs, I will run it and report the result tonight.

Ralf Baechle wrote:


On Fri, Aug 01, 2003 at 08:40:14AM +0800, Fuxin Zhang wrote:

Current linux code does exactly this. But I was seeing all kinds of faults occuring around the sigreturn point on the stack without a sync? And a sync does greatly improve the stablity.

The ordering does matter however since the Hit_Invalidate_I makes sure the write buffer is flushed.

could there be an errata explaining Fuxin's findings?

Fuxin, what version are you running?


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