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Re: [PATCH] Synthesize TLB refill handler at runtime

To: Ralf Baechle <>
Subject: Re: [PATCH] Synthesize TLB refill handler at runtime
From: "Maciej W. Rozycki" <>
Date: Wed, 24 Nov 2004 23:13:22 +0000 (GMT)
Cc: Thiemo Seufer <>, Manish Lachwani <>, Geert Uytterhoeven <>, Linux/MIPS Development <>
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <> <> <> <> <> <> <> <> <>
On Wed, 24 Nov 2004, Ralf Baechle wrote:

> 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 ...

 Broken firmware...  For DECstations it works until we wipe out RAM
reserved by the firmware, right before running `init'.  Which is not
firmware's fault, of course, and which I plan to get fixed eventually to
be able to access and set firmware environment variables from the
userland, to do a proper halt and reboot (with a command), etc.  I've not
decided whether to rip it away completely or to leave it as a
configuration option for these memory starved.  You can have 4MB of RAM on
some DECstations, you know.


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