From: Andi Kleen <ak@suse.de>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] i386-pda: Initialize the PDA early, before any C code runs.
Date: Tue, 12 Sep 2006 08:44:44 +0200 [thread overview]
Message-ID: <200609120844.44564.ak@suse.de> (raw)
In-Reply-To: <4505E8C1.7010906@goop.org>
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
next prev parent reply other threads:[~2006-09-12 8:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-11 22:52 [PATCH] i386-pda: Initialize the PDA early, before any C code runs Jeremy Fitzhardinge
2006-09-11 23:03 ` Andrew Morton
2006-09-11 23:32 ` Jeremy Fitzhardinge
2006-09-11 23:37 ` Jeremy Fitzhardinge
2006-09-12 5:57 ` Ingo Molnar
2006-09-12 5:51 ` Ingo Molnar
2006-09-12 6:44 ` Andi Kleen [this message]
2006-09-12 8:32 ` Jeremy Fitzhardinge
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