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From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Ralf Baechle <ralf@linux-mips.org>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>, linux-mips@linux-mips.org
Subject: Re: [PATCH] Unify watch.S and remove arch/mips/lib-{32,64}
Date: Mon, 04 Jun 2007 19:15:53 +0400	[thread overview]
Message-ID: <46642CA9.20103@ru.mvista.com> (raw)
In-Reply-To: <20070604151048.GA30128@linux-mips.org>

Hello.

Ralf Baechle wrote:

>>Unify lib-{32,64}/watch.S into lib/watch.S and remove lib-{32,64}
>>completely.

>>The old 64-bit __watch_set() expected an physical address and the old
>>32-bit __watch_set() expected a KSEG0 virtual address.  The new
>>unified __watch_set() is based on the 64-bit one.  Since there is no
>>real user of the __watch_set(), this incompatibility would not cause
>>any problem.

> 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.

    Watchpoints *could* be supported as part of KGDB, BTW.

>   Ralf

WBR, Sergei

  reply	other threads:[~2007-06-04 15:14 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-06-04 15:02 [PATCH] Unify watch.S and remove arch/mips/lib-{32,64} Atsushi Nemoto
2007-06-04 15:10 ` Ralf Baechle
2007-06-04 15:15   ` Sergei Shtylyov [this message]
2007-06-04 15:23   ` Maciej W. Rozycki
2007-06-04 15:41     ` Ralf Baechle
2007-06-04 16:28   ` Atsushi Nemoto
2007-06-07 17:39     ` Ralf Baechle

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