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Re: [PATCH] Synthesize TLB refill handler at runtime

To: "Maciej W. Rozycki" <macro@linux-mips.org>
Subject: Re: [PATCH] Synthesize TLB refill handler at runtime
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 24 Nov 2004 23:45:55 +0100
Cc: Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de>, Manish Lachwani <mlachwani@mvista.com>, Geert Uytterhoeven <geert@linux-m68k.org>, Linux/MIPS Development <linux-mips@linux-mips.org>
In-reply-to: <Pine.LNX.4.58L.0411242237540.843@blysk.ds.pg.gda.pl>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <41A283BD.3080300@mvista.com> <Pine.LNX.4.58L.0411230036310.31113@blysk.ds.pg.gda.pl> <41A29DCF.8030308@mvista.com> <Pine.LNX.4.58L.0411232018390.19941@blysk.ds.pg.gda.pl> <20041124014057.GE902@rembrandt.csv.ica.uni-stuttgart.de> <20041124094423.GB21039@linux-mips.org> <Pine.LNX.4.58L.0411241451290.843@blysk.ds.pg.gda.pl> <Pine.LNX.4.58L.0411242138560.843@blysk.ds.pg.gda.pl> <20041124221240.GA24500@linux-mips.org> <Pine.LNX.4.58L.0411242237540.843@blysk.ds.pg.gda.pl>
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On Wed, Nov 24, 2004 at 10:39:56PM +0000, Maciej W. Rozycki wrote:

> > It's so easy to implement with serial console.  Best thing since sliced
> > bread :-)
> 
>  Yep, and some systems have an appropriate console output callback in the 
> firmware making it trivial.

Which unfortunately is becoming unusable fairly soon on many systems.
IP27: ARC is dead after the first TLB flush.  IP22: dead after the
external L2 controller was enabled etc.  On average I'm less than
pleased with firmware usability even for simple stuff such as printing ...

  Ralf

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