From: Albert Cahalan <albert@users.sf.net>
To: linux-kernel mailing list <linux-kernel@vger.kernel.org>
Cc: olh@suse.de, benh@kernel.crashing.org, geert@linux-m68k.org
Subject: Re: reserve legacy io regions on powermac
Date: 21 Jul 2004 20:59:06 -0400 [thread overview]
Message-ID: <1090457945.1231.711.camel@cube> (raw)
I think a great many drivers could be cleaned up
by making IO fail if the proper IO address cookies
haven't been obtained. This might be done with
byteswapping, XOR, addition, putting a checksum in
the top 2 bytes of a 64-bit cookie, or simply
tracking where an ioremap has been done. Then the
read and write operations can check this.
In general, make IO fail if a driver doesn't play
by the rules.
Perhaps some of the low memory-mapped stuff on
x86 could be moved.
next reply other threads:[~2004-07-22 3:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-22 0:59 Albert Cahalan [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-07-21 9:12 reserve legacy io regions on powermac Olaf Hering
2004-07-21 14:51 ` Benjamin Herrenschmidt
2004-07-21 14:56 ` Olaf Hering
2004-07-21 15:48 ` Geert Uytterhoeven
2004-07-21 17:08 ` Segher Boessenkool
2004-07-21 20:07 ` Jesse Barnes
2004-07-22 8:21 ` Segher Boessenkool
2004-07-23 14:21 ` Olaf Hering
2004-07-23 16:44 ` Olaf Hering
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