From: Davide Libenzi <davidel@xmailserver.org>
To: Mikael Pettersson <mikpe@csd.uu.se>
Cc: Linus Torvalds <torvalds@transmeta.com>,
kaos@ocs.com.au,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH][2.5.73] enable local APIC on P4
Date: Mon, 23 Jun 2003 15:45:59 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.55.0306231545200.3730@bigblue.dev.mcafeelabs.com> (raw)
In-Reply-To: <200306232229.h5NMTaJU013801@harpo.it.uu.se>
On Tue, 24 Jun 2003, Mikael Pettersson wrote:
> The current local APIC code refuses to enable the local APIC
> on a P4 if the BIOS booted us with the local APIC disabled.
> This patch removes this unnecessary restriction. Please apply.
>
> Most P4 machines do boot with the local APIC enabled, but
> Keith Owens reported that the P4 based Compaq Evo N800v
> disables the local APIC, even though the machine actually
> works if Linux enables it.
>
> It is possible that some P4 machines with broken BIOSen
> were saved by our refusal to enable the local APIC. We
> can handle them via the DMI blacklist rules instead.
I did the same thing on my Presario. BIOS disable it by default.
- Davide
prev parent reply other threads:[~2003-06-23 22:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-23 22:29 Mikael Pettersson
2003-06-23 22:45 ` Davide Libenzi [this message]
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