From: Dave Jones <davej@codemonkey.org.uk>
To: john stultz <johnstul@us.ibm.com>
Cc: lkml <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@digeo.com>,
Alan Cox <alan@lxorguk.ukuu.org.uk>, James <jamesclv@us.ibm.com>
Subject: Re: [PATCH] linux-2.5.69_clear-smi-fix_A1
Date: Tue, 13 May 2003 15:03:54 +0100 [thread overview]
Message-ID: <20030513140354.GB676@suse.de> (raw)
In-Reply-To: <1052785802.4169.12.camel@w-jstultz2.beaverton.ibm.com>
On Mon, May 12, 2003 at 05:30:03PM -0700, john stultz wrote:
> I've been having problems with ACPI on a box here in our lab. Some of
> our more recent hardware requires that SMIs are routed through the
> IOAPIC, thus when we clear_IO_APIC() at boot time, we clear the BIOS
> initialized SMI pin. This basically clobbers the SMI so we can then
> never make the transition into ACPI mode.
>
> This patch simply reads the apic entry in clear_IO_APIC to make sure the
> delivery_mode isn't dest_SMI. If it is, we leave the apic entry alone
> and return.
>
> With this patch, the box boots and SMIs function properly.
There's a whole bunch of 'ACPI buggers up interrupt routing' bugs
in bugzilla right now, I wonder if this could help out with those.
Dave
prev parent reply other threads:[~2003-05-13 13:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-13 0:30 [PATCH] linux-2.5.69_clear-smi-fix_A1 john stultz
2003-05-13 0:54 ` Dave Hansen
2003-05-13 1:03 ` john stultz
2003-05-13 14:03 ` Dave Jones [this message]
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