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From: "Alexander van Heukelum" <heukelum@fastmail.fm>
To: "Eric W. Biederman" <ebiederm@xmission.com>,
	"Vivek Goyal" <vgoyal@in.ibm.com>
Cc: "Alexander van Heukelum" <heukelum@mailshack.com>,
	"Steven Rostedt" <rostedt@goodmis.org>, "Andi Kleen" <ak@suse.de>,
	"LKML" <linux-kernel@vger.kernel.org>,
	sct@redhat.com, herbert@gondor.apana.org.au,
	xen-devel@lists.xensource.com
Subject: Re: [PATCH] shorten the x86_64 boot setup GDT to what the comment says
Date: Sun, 12 Nov 2006 14:47:45 +0100	[thread overview]
Message-ID: <1163339265.29537.275608001@webmail.messagingengine.com> (raw)
In-Reply-To: <20061110154600.GA826@mailshack.com>


On Fri, 10 Nov 2006 16:46:00 +0100, "Alexander van Heukelum"
<heukelum@mailshack.com> said:
> On Fri, Nov 10, 2006 at 03:01:39PM +0100, Andi Kleen wrote:
> > > Hi Andi,
> > > 
> > > (Assuming you mean: "The gdt table already is 16-byte aligned.")
> > > 
> > > Hmm. Not in the most recent version of Linus' tree, not even by
> > > concidence, and none of the patches in your quilt-current/patches touch
> > > x86_64's version of setup.S. Am I missing something?
> > 
> > The main GDT is. The boot GDT isn't, but it doesn't matter because
> > it is only used for a very short time.
> 
> Aha, thanks for clearing that up. I agree it is not important to have
> the boot GDT aligned, but I think it is preferable to make parts of the
> two versions of setup.S equal if possible.
> 
> Let's see what Steven Rostedt comes up with.
> 
> I find the relocatable image patches interesting. I wonder if one can
> get such a kernel 'running' using bochs, freedos, and loadlin ;).

Was it clear that I was sceptical about this still working? Oh well,
I tried it, and it did not break. Freedos' versions of himem and emm386 
loaded, DOS=HIGH,UMB.

Alexander
-- 
  Alexander van Heukelum
  heukelum@fastmail.fm

-- 
http://www.fastmail.fm - Same, same, but different…


  reply	other threads:[~2006-11-12 13:47 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-09  3:01 [PATCH] shorten the x86_64 boot setup GDT to what the comment says Steven Rostedt
2006-11-09 13:13 ` Andi Kleen
2006-11-09 15:31   ` [Xen-devel] " Jan Beulich
2006-11-09 13:31     ` Andi Kleen
2006-11-09 14:54 ` Alexander van Heukelum
2006-11-09 15:18   ` Steven Rostedt
2006-11-09 15:44     ` Alexander van Heukelum
2006-11-09 13:33       ` Andi Kleen
2006-11-09 18:31         ` Alexander van Heukelum
2006-11-10 14:01           ` Andi Kleen
2006-11-10 15:46             ` Alexander van Heukelum
2006-11-12 13:47               ` Alexander van Heukelum [this message]
2006-11-11  5:17             ` [PATCH] make x86_64 boot gdt size exact (like x86) Steven Rostedt
2006-11-11  6:42               ` Andi Kleen
2006-11-13 15:37                 ` Steven Rostedt
2006-11-13 16:47                   ` Andi Kleen

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