From: "H. Peter Anvin" <hpa@zytor.com>
To: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Mike Habeck <habeck@sgi.com>, Mike Travis <travis@sgi.com>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org, Jesse Barnes <jbarnes@virtuousgeek.org>,
Jacob Pan <jacob.jun.pan@intel.com>, Tejun Heo <tj@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Yinghai <yinghai.lu@oracle.com>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
Myron Stowe <myron.stowe@hp.com>
Subject: Re: [Patch 1/1] x86 pci: Add option to not assign BAR's if not already assigned
Date: Thu, 13 May 2010 13:09:14 -0700 [thread overview]
Message-ID: <4BEC5C6A.7040205@zytor.com> (raw)
In-Reply-To: <201005131402.30759.bjorn.helgaas@hp.com>
On 05/13/2010 01:02 PM, Bjorn Helgaas wrote:
>
> Yep, that's definitely a problem, and I don't have a good solution.
>
> HP (and probably SGI) had a nice hardware solution for ia64 --
> address translation across the host bridge, so each bridge could
> have its own 64K I/O space. But I don't see that coming in the
> x86 PC arena.
>
I would agree, that is unlikely (not that I have any information on this
subject, mind you.) Much more likely would be a bridge extension
capability for finer-grained I/O space routing.
-hpa
next prev parent reply other threads:[~2010-05-13 20:09 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-12 18:14 Mike Travis
2010-05-13 18:56 ` Bjorn Helgaas
2010-05-13 19:08 ` H. Peter Anvin
2010-05-13 19:12 ` Mike Travis
2010-05-13 19:13 ` Mike Travis
2010-05-13 19:54 ` Bjorn Helgaas
2010-05-13 20:27 ` Mike Habeck
2010-05-13 19:38 ` Mike Habeck
2010-05-13 20:02 ` Bjorn Helgaas
2010-05-13 20:09 ` H. Peter Anvin [this message]
2010-05-14 22:25 ` Jesse Barnes
2010-05-14 22:34 ` Mike Travis
2010-05-14 22:35 ` H. Peter Anvin
2010-05-14 22:40 ` Mike Travis
2010-05-15 2:25 ` Mike Travis
2010-05-14 22:47 ` Jesse Barnes
2010-05-14 22:59 ` Mike Travis
2010-05-14 23:06 ` Jesse Barnes
2010-05-14 23:23 ` Mike Travis
2010-05-14 23:33 ` Jesse Barnes
2010-05-14 23:40 ` H. Peter Anvin
2010-05-15 0:02 ` Jesse Barnes
2010-05-14 23:20 ` H. Peter Anvin
2010-05-14 23:28 ` Jesse Barnes
2010-05-14 23:32 ` H. Peter Anvin
2010-05-14 23:34 ` Jesse Barnes
2010-05-14 23:39 ` H. Peter Anvin
2010-05-15 0:00 ` Jesse Barnes
2010-05-15 0:14 ` H. Peter Anvin
2010-05-13 20:36 ` Yinghai Lu
2010-05-13 20:34 ` H. Peter Anvin
2010-05-13 18:58 ` Bjorn Helgaas
2010-05-28 16:53 ` Mike Travis
2010-05-28 17:00 ` H. Peter Anvin
2010-05-28 17:10 ` Mike Travis
2010-05-28 19:28 ` Jesse Barnes
2010-05-28 20:04 ` H. Peter Anvin
2010-05-31 11:12 ` Mike Travis
2010-05-31 16:36 ` H. Peter Anvin
2010-06-01 22:49 ` Bjorn Helgaas
2010-06-02 7:31 ` H. Peter Anvin
2010-06-02 15:45 ` Bjorn Helgaas
2010-06-02 15:47 ` H. Peter Anvin
2010-06-02 15:53 ` Jesse Barnes
2010-06-09 0:53 ` H. Peter Anvin
2010-06-09 1:26 ` Jesse Barnes
2010-06-09 14:23 ` Mike Habeck
2010-06-02 15:53 ` Mike Habeck
2010-06-02 16:40 ` Bjorn Helgaas
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