From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: xen-devel@lists.xensource.com, Jan Beulich <jbeulich@novell.com>
Subject: Re: Xen hypervisor hangs on booting against c/s 16925
Date: Tue, 29 Jan 2008 12:22:29 +0000 [thread overview]
Message-ID: <20080129122229.55d3828f@core> (raw)
In-Reply-To: <C3C4B249.1B901%Keir.Fraser@cl.cam.ac.uk>
On Tue, 29 Jan 2008 10:36:57 +0000
Keir Fraser <Keir.Fraser@cl.cam.ac.uk> wrote:
> How about we just map the whole megabyte UC- at start of day? We rarely
> touch anything down there and when we do it'll mostly be BIOS tables (hence
> in ROM and hence not marked as RAM in e820
Most BIOS tables are in RAM because they are built each boot. Mapping the
low 640K UC is also going to suprise the BIOS somewhat and seems to be
asking for trouble.
The MTRR mappings for the low 1Mb are special anyway and aligned with the
need for 640K RAM and a following ISA hole.
Alan
next prev parent reply other threads:[~2008-01-29 12:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-29 5:58 Xen hypervisor hangs on booting against c/s 16925 Li, Haicheng
2008-01-29 7:40 ` Li, Haicheng
2008-01-29 7:53 ` Keir Fraser
2008-01-29 9:37 ` Keir Fraser
2008-01-29 10:05 ` Jan Beulich
2008-01-29 10:20 ` Keir Fraser
2008-01-29 10:29 ` Christoph Egger
2008-01-29 10:34 ` Jan Beulich
2008-01-29 10:36 ` Keir Fraser
2008-01-29 10:40 ` Keir Fraser
2008-01-29 10:54 ` Jan Beulich
2008-01-29 10:55 ` Keir Fraser
2008-01-29 12:22 ` Alan Cox [this message]
2008-01-29 10:45 ` Keir Fraser
2008-01-29 10:52 ` Jan Beulich
2008-01-29 10:54 ` Keir Fraser
2008-01-29 11:08 ` Jan Beulich
2008-01-29 11:58 ` Alan Cox
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