From: Len Brown <len.brown@intel.com>
To: "J.A. Magallón" <jamagallon@ono.com>
Cc: "Linux-Kernel, " <linux-kernel@vger.kernel.org>
Subject: Re: SMP and ACPI
Date: Wed, 15 Nov 2006 02:16:37 -0500 [thread overview]
Message-ID: <200611150216.37471.len.brown@intel.com> (raw)
In-Reply-To: <20061114225848.160cc46f@werewolf-wl>
On Tuesday 14 November 2006 16:58, J.A. Magallón wrote:
>... is it still needed to select ACPI manually to
> get SMP working, or does SMP select the minimal part of ACPI that is needed ?
if speaking of recent 2.6...
CONFIG_SMP and CONFIG_ACPI are independent.
So if you select CONFIG_SMP and don't select CONFIG_ACPI,
then your PC will need to support MPS if Linux is going to bring up the processors...
There no longer exists a build-time concept of "minimal part of ACPI that is needed" --
you either include CONFIG_ACPI or you exclude it. However, at boot-time, "acpi=ht"
is still present -- primarily for some old systems with HT that didn't run ACPI well.
No idea if this this is still needed in practice but occasionally acpi=ht comes in handy
to debug table related issues.
-Len
prev parent reply other threads:[~2006-11-15 7:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-14 21:58 SMP and ACPI J.A. Magallón
2006-11-15 7:16 ` Len Brown [this message]
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