From: Helge Hafting <helgehaf@aitel.hist.no>
To: Adam Belay <ambx1@neo.rr.com>
Cc: Linus Torvalds <torvalds@osdl.org>, Andi Kleen <ak@colin2.muc.de>,
Mika Penttil? <mika.penttila@kolumbus.fi>, Andi Kleen <ak@muc.de>,
David Hinds <dhinds@sonic.net>,
linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
"Grover, Andrew" <andrew.grover@intel.com>
Subject: Re: PCI memory allocation bug with CONFIG_HIGHMEM
Date: Wed, 07 Jan 2004 09:32:05 +0100 [thread overview]
Message-ID: <3FFBC405.80405@aitel.hist.no> (raw)
In-Reply-To: <20040106222959.GA3188@neo.rr.com>
Adam Belay wrote:
> 2.) Windows works with buggy BIOSes because of the way it calls them.
>
> I looked into how Windows handles the PnPBIOS and may have discovered why it
> works on buggy BIOS. It turns out that exclusively realmode calls are used.
> See www.missl.cs.umd.edu/Projects/sebos/winint/index2.html#pnpbios. My
> knowledge is limited in this area of the x86 architecture but it is my
> impression that it would not be possible, or perhaps worth it, to implement
> realmode calls for the Linux PnPBIOS driver because of the time it is
> initialized.
Are these PnPBIOS calls needed at boot only? If so, consider
querying the bios early in the boot code - before
switching to protected mode. Just store the results,
and let the driver read them later instead of doing
calls that crash.
Helge Hafting
next prev parent reply other threads:[~2004-01-07 8:20 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1aJdi-7TH-25@gated-at.bofh.it>
2004-01-06 3:32 ` PCI memory allocation bug with CONFIG_HIGHMEM Andi Kleen
2004-01-06 3:40 ` Linus Torvalds
2004-01-06 4:05 ` Andi Kleen
2004-01-06 5:04 ` Linus Torvalds
2004-01-06 8:12 ` Andi Kleen
2004-01-06 9:11 ` Mika Penttilä
2004-01-06 9:44 ` Andi Kleen
2004-01-06 10:16 ` Mika Penttilä
2004-01-06 10:49 ` Andi Kleen
2004-01-06 15:27 ` Linus Torvalds
2004-01-06 15:37 ` Andi Kleen
2004-01-06 15:48 ` Linus Torvalds
2004-01-06 22:29 ` Adam Belay
2004-01-07 4:06 ` Linus Torvalds
2004-01-07 5:02 ` Andi Kleen
2004-01-07 5:55 ` Dave Jones
2004-01-07 6:06 ` Linus Torvalds
2004-01-07 6:08 ` Dave Jones
2004-01-07 6:45 ` Linus Torvalds
2004-01-07 6:51 ` Andi Kleen
2004-01-07 2:43 ` Adam Belay
2004-01-07 8:32 ` Helge Hafting [this message]
2004-01-06 22:45 ` Eric W. Biederman
2004-01-07 0:06 ` Linus Torvalds
2004-01-07 4:58 ` Eric W. Biederman
2004-01-07 5:32 ` Linus Torvalds
2004-01-07 15:53 ` Eric W. Biederman
2004-01-07 16:32 ` Linus Torvalds
2004-01-07 17:32 ` Eric W. Biederman
2004-01-08 19:34 ` Eric W. Biederman
2004-01-07 9:31 ` Russell King
2004-01-07 15:06 ` Eric W. Biederman
2004-01-07 20:29 ` Russell King
2004-01-06 22:56 ` Eric W. Biederman
2004-01-05 20:07 David Hinds
2004-01-05 23:00 ` Russell King
2004-01-05 23:45 ` David Hinds
2004-01-06 0:36 ` Linus Torvalds
2004-01-06 0:44 ` David Hinds
2004-01-06 1:11 ` Linus Torvalds
2004-01-06 1:41 ` Linus Torvalds
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