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Re: questions on struct sigcontext

To: Daniel Jacobowitz <dan@debian.org>
Subject: Re: questions on struct sigcontext
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 12 Dec 2007 19:04:55 +0000
Cc: Chris Friesen <cfriesen@nortel.com>, linux-mips@linux-mips.org
In-reply-to: <20071212190032.GA30506@caradoc.them.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <47601DEE.4090200@nortel.com> <20071212190032.GA30506@caradoc.them.org>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Mutt/1.5.17 (2007-11-01)
On Wed, Dec 12, 2007 at 02:00:32PM -0500, Daniel Jacobowitz wrote:

> There used to be slots for badvaddr and cause.  You'll have to ask
> Ralf why he decided to clobber them for DSP state, I don't remember
> :-)  I suspect they may never have held useful information for you;
> we don't context switch them for userspace, so an intervening fault
> in kernel space or in another thread could change them.

Correct, we never filled badvaddr and cause, so it was easy to recycle
those fields.

  Ralf

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