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Re: LO reg. gets trashed by kgdb in 2.4.x and older kernels

To: Sergei Shtylyov <sshtylyov@dev.rtsoft.ru>
Subject: Re: LO reg. gets trashed by kgdb in 2.4.x and older kernels
From: Ralf Baechle <ralf@linux-mips.org>
Date: Thu, 8 Jul 2004 13:43:23 +0200
Cc: linux-mips@ftp.linux-mips.org
In-reply-to: <40E96E2A.2000403@dev.rtsoft.ru>
Original-recipient: rfc822;linux-mips@ftp.linux-mips.org
References: <40E96E2A.2000403@dev.rtsoft.ru>
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On Mon, Jul 05, 2004 at 07:05:14PM +0400, Sergei Shtylyov wrote:

>     I have discovered that the gdb-low.S trashes the LO reg. instead of 
> restoring it. This was fixed for the 2.6 kernels but, as it seems, was left 
> unfixed in the earlier ones (run into this on 2.4.18/2.4.20). Here's the 
> patch
> against the lastest 2.4.x revision of the file...

Thanks.  This also was an ancient bug probably dating back to late '94 or
early '95 so all branches other than 2.6 were affected.

  Ralf

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