From: Jesse Barnes <jbarnes@engr.sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: PCI Express
Date: Mon, 07 Mar 2005 23:11:46 +0000 [thread overview]
Message-ID: <200503071511.47177.jbarnes@engr.sgi.com> (raw)
In-Reply-To: <4228F250.7C5E2E3C@sgi.com>
On Monday, March 7, 2005 3:03 pm, Nguyen, Tom L wrote:
> On Monday, March 07, 2005 12:41 PM Colin Ngam wrote:
> > I looked at Documentation/MSI-HOWTO.txt(linux-ia64-release-2.6.11) and
> >
> > it mentioned that CONFIG_X86_LOCAL_APIC has to be configured. I did
>
> not
>
> > find this configured on in any sample ia64 config files, but it does
> > exist in defconfig for i386. Is this just an ia32 config option?
>
> IA64 uses SAPIC instead of IOxAPIC. SAPIC, which is somewhat similar to
> IOxAPIC, is included in IA64 kernel. MSI/MSI-X support configuration
> option therefore is always available in IA64.
So the MSIs are programmed to point at the processor SAPIC block? I think
that'll work for us on Altix, but if they're pointed at an external Intel (or
compatible) interrupt controller, we'll have to write new code for Altix.
Jesse
next prev parent reply other threads:[~2005-03-07 23:11 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-04 23:42 PCI Express Colin Ngam
2005-03-07 16:48 ` Grant Grundler
2005-03-07 16:50 ` Matthew Wilcox
2005-03-07 17:02 ` Mark Maule
2005-03-07 17:21 ` Matthew Wilcox
2005-03-07 20:40 ` Colin Ngam
2005-03-07 23:03 ` Nguyen, Tom L
2005-03-07 23:11 ` Jesse Barnes [this message]
2005-03-07 23:31 ` Grant Grundler
2005-03-07 23:32 ` Nguyen, Tom L
2005-03-07 23:36 ` Grant Grundler
2005-03-07 23:40 ` Jesse Barnes
2005-03-07 23:50 ` Grant Grundler
2005-03-08 4:40 ` Colin Ngam
2005-03-08 16:45 ` Jesse Barnes
2005-03-08 19:29 ` Nguyen, Tom L
2005-03-08 23:48 ` Colin Ngam
2005-03-09 0:02 ` Jesse Barnes
2005-03-09 0:13 ` Colin Ngam
2005-03-09 1:29 ` Colin Ngam
2005-03-09 1:29 ` Jesse Barnes
2005-03-09 1:35 ` Colin Ngam
2005-03-09 3:04 ` Grant Grundler
2005-03-09 15:45 ` Colin Ngam
2005-03-09 16:35 ` Nguyen, Tom L
2005-03-09 17:33 ` Grant Grundler
2005-03-09 17:42 ` Colin Ngam
2005-03-09 17:56 ` Grant Grundler
2005-03-09 18:12 ` Colin Ngam
2005-03-09 18:48 ` Grant Grundler
2005-03-09 19:43 ` Nguyen, Tom L
2005-03-09 21:44 ` Colin Ngam
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