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Re: End c-tx49.c's misserable existence

To: Atsushi Nemoto <>
Subject: Re: End c-tx49.c's misserable existence
From: Ralf Baechle <>
Date: Mon, 14 Apr 2003 05:50:38 +0200
Cc:, Atsushi Nemoto <>
In-reply-to: <>; from on Mon, Apr 14, 2003 at 12:35:14PM +0900
Original-recipient: rfc822;
References: <> <>
User-agent: Mutt/
On Mon, Apr 14, 2003 at 12:35:14PM +0900, Atsushi Nemoto wrote:

> TOSHIBA_ICACHE_WAR can be removed.  This workaround is not needed
> if kernel does not modify the cache codes itself in run-time.
> When I wrote c-tx49.c I blindly followed the statement in TX49/H2
> manual's statement. ("If the instruction (i.e. CACHE) is issued for
> the line which this instruction itself exists, the following operation
> is not guaranteed.")  Now I know this warning is only for
> self-modified code.  There must be no problem if the codes is not
> modified in run-time.  So please remove all TOSHIBA_ICACHE_WAR stuff
> and make c-r4k.c more clean.

Excellent.  This should provide a good performance boost for the TX49
also as disabling the I-cache during the flush made the operation even
slower than it has to be.


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