[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20080422212548.GC6004@elf.ucw.cz>
Date: Tue, 22 Apr 2008 23:25:48 +0200
From: Pavel Machek <pavel@....cz>
To: Andi Kleen <andi@...stfloor.org>
Cc: Jesse Barnes <jbarnes@...tuousgeek.org>,
linux-pci@...ey.karlin.mff.cuni.cz,
Jean Delvare <jdelvare@...e.de>,
LKML <linux-kernel@...r.kernel.org>,
Tejun Heo <htejun@...il.com>,
Tom Long Nguyen <tom.l.nguyen@...el.com>,
Randy Dunlap <rdunlap@...otime.net>,
Jeff Garzik <jgarzik@...ox.com>
Subject: Re: PCI MSI breaks when booting with nosmp
On Mon 2008-04-21 21:44:34, Andi Kleen wrote:
> Pavel Machek wrote:
> > On Mon 2008-04-21 20:45:05, Andi Kleen wrote:
> >> Jesse Barnes <jbarnes@...tuousgeek.org> writes:
> >>> Ok, I see this too on my desktop machine. It looks like we're not getting
> >>> interrupts setup correctly in the nosmp case. Still digging through to see
> >>> why though...
> >> NoSMP disables the io-apic and a lot of modern systems don't work
> >> without APIC.
> >
> > Are you sure? I still boot DOS on very recent boxes, and they seem to
> > work. How can PC-compatible machine require an APIC?
>
> The machine doesn't, but the drivers do. DOS likely doesn't use all
> hardware.
Should we be fixing drivers?
Do drivers even know? I'd expect core code in arch/x86 to shield
details of interrupt routing from them..
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists