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Date: Wed, 26 Jan 2011 13:44:15 +0200
From: "Ahmed S. Darwish" <darwish.07@gmail.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, X86-ML <x86@kernel.org>,
        Tony Luck <tony.luck@intel.com>, Dave Jones <davej@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Randy Dunlap <rdunlap@xenotime.net>,
        Willy Tarreau <wtarreau@hera.kernel.org>, Willy Tarreau <w@1wt.eu>,
        Dirk Hohndel <hohndel@infradead.org>, Dirk.Hohndel@intel.com,
        IDE-ML <linux-ide@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker <fweisbec@gmail.com>,
        Borislav Petkov <bp@alien8.de>, Arjan van de Ven <arjan@infradead.org>,
        Tejun Heo <tj@kernel.org>, James Bottomley <James.Bottomley@suse.de>,
        Mark Lord <kernel@teksavvy.com>, Jeff Garzik <jgarzik@pobox.com>
Subject: Re: [PATCH 0/2][concept RFC] x86: BIOS-save kernel log to disk
	upon panic
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On Tue, Jan 25, 2011 at 09:33:18AM -0800, H. Peter Anvin wrote:
> On 01/25/2011 07:08 AM, Tejun Heo wrote:
> 
> >> All in one, a very intriguing idea IMO, and the hardest bits
> >> (lowlevel x86 transition) is all implemented already.
> 
> Lowlevel x86 transition is not at all the hardest part.  It's
> detail-oriented but well defined (and, I might add, incompletely
> implemented -- 64 bits only, not using facilities we already have);
>

Making the transition code applicable to 32-bit CPUs will hopefully be
quite simple: it's mostly a subset of the posted parts.

Since I might use that transition code for a different purpose now, any
facilities not properly used beside the identity mappings?

thanks,

-- 
Darwish
http://darwish.07.googlepages.com