linux-kernel - Re: [PATCH] i386-pda: Initialize the PDA early, before any C code runs.

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Message-Id: <200609120844.44564.ak@suse.de>
Date:	Tue, 12 Sep 2006 08:44:44 +0200
From:	Andi Kleen <ak@...e.de>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] i386-pda: Initialize the PDA early, before any C code runs.

On Tuesday 12 September 2006 00:52, Jeremy Fitzhardinge wrote:
> Initialize the PDA early, before any C code runs.
>
> This patch makes sure the PDA is usable in head.S, before any C code
> is run.
>
> On the boot CPU, this is done by using a temporary boot_pda which is
> initialized appropriately.  It is replaced with a proper PDA when the
> proper GDT is installed.
>
> For secondary CPUs, the GDT and PDA are pre-allocated and initialized.
> head.S just needs to set %gs and load the GDT.
>
> In the process, this removes the need for early_smp_processor_id() and
> early_current().

Against which tree was that? There are a zillion of rejects.

-Andi
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