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FYI [msw@redhat.com: Re: syslinux-1.43 bug [and possible PATCH]]

  FYI.  boot-floppies is currently using syslinux 1.43.  Current upstream
  version is 1.48.

  See ftp://ftp.kernel.org/pub/linux/utils/boot/syslinux/

  Cheers, Marcel

----- Forwarded message from Matt Wilson <msw@redhat.com> -----

Date:   Thu, 23 Sep 1999 17:30:12 -0400
From: Matt Wilson <msw@redhat.com>
To: Kanoj Sarcar <kanoj@google.engr.sgi.com>, syslinux@linux.kernel.org,
        linux-mm@kvack.org, linux-kernel@vger.rutgers.edu
Subject: Re: syslinux-1.43 bug [and possible PATCH]
X-Mailer: Mutt 0.91.1

This was fixed in 1.44, AFAIK.  HIGHMEM_MAX is now 38000000h.
We're using 1.45 for our next release.


On Thu, Sep 23, 1999 at 02:09:58PM -0700, Kanoj Sarcar wrote:
> I have a possible problem to report with syslinux, and a suggested
> fix. Please send me comments and feedback at kanoj@engr.sgi.com, 
> since I am not subscribed to the syslinux or kernel lists.
> While installing linux (RedHat6.0, SuSe, Mandrake etc) on a ia32
> Compaq box with 1.5Gb memory, I have observed kernel panics from 
> mount_root. On further investigation, syslinux decides to put initrd 
> at a high physical address, which the Linux kernel, compiled with 
> PAGE_OFFSET=0xc0000000 can not access. The kernel can access at
> the most physical address 0x3c000000, whereas syslinux/ldlinux.asm
> can put initrd as high as HIGHMEM_MAX=0x3f000000. This leads
> setup_arch() to decide it can not use initrd, thus causing the
> kernel panic. 
> The easy fix to me seems to be to change HIGHMEM_MAX in
> syslinux/ldlinux.asm to 0x3c000000. In fact, I have verified on
> a couple of machines that this will let the installation proceed.
> Have other people run into this problem and worked around it some
> other way? (One way would be to specify mem= at the boot: prompt
> from syslinux. Yet another way seems to be to specify mem= in
> the syslinux.cfg file. Changing HIGHMEM_MAX seems to be the cleanest,
> although I am not sure whether this will impact the capability of
> syslinux to install other os'es).
> Thanks.
> Kanoj
> kanoj@engr.sgi.com
> -
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----- End forwarded message -----

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