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From: Anton Altaparmakov <>
To: Matt Domsch <>
Cc: Marcelo Tosatti <>,
	LKML <>
Subject: Re: 2.4.23-bk bogus edd changeset - Re: 2.4.23 compile error in edd
Date: Mon, 15 Dec 2003 19:52:32 +0000 (GMT)	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Wed, 10 Dec 2003, Matt Domsch wrote:

> > The ds segment is not pointing to the correct segment AND/OR the offsets
> > into the segment used for the writes are bogus.  You write straight into
> > ds and ds:si referenced memory but you never setup ds in the first
> > place.  So the writes done by the EDD code corrupt the loaded compressed
> > kernel and the decompression fails.
> ds is set up already to point at the empty_zero_page, else none of
> what I'm doing is correct.  But, it is very likely that something else
> is using 0x228 in empty_zero_page but isn't marked as using it in
> Documentation/i386/zero-page.txt.
> You've been patient, and thorough.  As another test, could you change
> include/asm-i386/edd.h: DISK80_SIG_BUFFER from 0x228 to 0x2cc (the
> four bytes immediately before the e820 memory buffer), and see if that
> helps?  If so, I'll submit a patch to use that instead, and another
> that markes 0x228 as in use by something else.

Hi Matt,

sorry for the delay but I am now on holidays until January because of my
impending wedding and I won't be back at work, where the affected PC lives
until 5th or 6th January (whichever is the Monday).  I will try it then,
sorry to have to keep you waiting so long.

Best regards,

Anton Altaparmakov <aia21 at> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on
WWW: &

  reply	other threads:[~2003-12-15 19:53 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-12-04 14:20 2.4.23 compile error in edd Meelis Roos
2003-12-04 14:58 ` Meelis Roos
2003-12-04 22:31 ` 2.4.23-bk bogus edd changeset - " Anton Altaparmakov
2003-12-05 15:52   ` Marcelo Tosatti
2003-12-05 17:36     ` Matt Domsch
2003-12-05 18:53       ` Matt Domsch
2003-12-05 19:07         ` Matt Domsch
2003-12-08 16:34       ` Anton Altaparmakov
2003-12-09  4:23         ` Matt Domsch
2003-12-09 16:29           ` Anton Altaparmakov
2003-12-10 20:48             ` Matt Domsch
2003-12-15 19:52               ` Anton Altaparmakov [this message]
2003-12-18 11:32       ` Meelis Roos
2003-12-18 14:02         ` Matt Domsch
2003-12-19 11:05           ` Meelis Roos
2003-12-19 14:49             ` Matt Domsch

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