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Re: RM7k cache_flush_sigtramp

To: Fuxin Zhang <fxzhang@ict.ac.cn>
Subject: Re: RM7k cache_flush_sigtramp
From: Ralf Baechle <ralf@linux-mips.org>
Date: Fri, 1 Aug 2003 05:01:11 +0200
Cc: Adam Kiepul <Adam_Kiepul@pmc-sierra.com>, MAKE FUN PRANK CALLS <linux-mips@linux-mips.org>
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Adam,

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?

  Ralf

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