linux-kernel - Re: PCI MSI breaks when booting with nosmp

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <480CEEA2.1040106@firstfloor.org>
Date:	Mon, 21 Apr 2008 21:44:34 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Pavel Machek <pavel@....cz>
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

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.

-Andi
--
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/