From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <19990923173012.B11766@devserv.devel.redhat.com> Date: Thu, 23 Sep 1999 17:30:12 -0400 From: Matt Wilson Subject: Re: syslinux-1.43 bug [and possible PATCH] References: <199909232109.OAA13866@google.engr.sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <199909232109.OAA13866@google.engr.sgi.com>; from Kanoj Sarcar on Thu, Sep 23, 1999 at 02:09:58PM -0700 Sender: owner-linux-mm@kvack.org Return-Path: To: Kanoj Sarcar , syslinux@linux.kernel.org, linux-mm@kvack.org, linux-kernel@vger.rutgers.edu List-ID: This was fixed in 1.44, AFAIK. HIGHMEM_MAX is now 38000000h. We're using 1.45 for our next release. Matt msw@redhat.com 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 > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://humbolt.geo.uu.nl/Linux-MM/