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Re: [PATCH] Unify watch.S and remove arch/mips/lib-{32,64}

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] Unify watch.S and remove arch/mips/lib-{32,64}
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Mon, 4 Jun 2007 16:23:29 +0100 (BST)
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>, linux-mips@linux-mips.org
In-reply-to: <20070604151048.GA30128@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20070605.000239.31638706.anemo@mba.ocn.ne.jp> <20070604151048.GA30128@linux-mips.org>
Sender: linux-mips-bounce@linux-mips.org
On Mon, 4 Jun 2007, Ralf Baechle wrote:

> I think we can simply drop the entire watchpoint support.  This was
> only ever working on R4000/R4400 and even there only somewhat useful
> for kernel debugging.  So if we ever use watchpoint support I think
> something needs to be developed from scratch.

 A long-term plan is to make them available to userland through ptrace() 
in a uniform way covering MIPS32/64 watchpoints as well for gdb and 
suchlike.

  Maciej

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