linux-mips
[Top] [All Lists]

Re: [PATCH] Avoid potential hazard on Context register

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] Avoid potential hazard on Context register
From: Chris Dearman <chris@mips.com>
Date: Sun, 11 Oct 2009 13:05:52 -0700
Cc: linux-mips <linux-mips@linux-mips.org>
In-reply-to: <20091011133912.GA15684@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <4AD17619.1000201@mips.com> <20091011133912.GA15684@linux-mips.org>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Thunderbird 2.0.0.23 (Windows/20090812)
Ralf Baechle wrote:

I'm curious, did you actually manage to trigger this one?  The time between
the instructions should be fairly long but then again the 34K has been
good for a few surprises!

Yes... It actually showed up in 74k silicon at particular clock frequencies. The dual issue pipeline does make it susceptible to these "theoretical" problems ;)

Chris

--
Chris Dearman               Desk: +1 408 530 5092  Cell: +1 650 224 8603
MIPS Technologies Inc            955 East Arques Ave, Sunnyvale CA 94085

<Prev in Thread] Current Thread [Next in Thread>