From: "H. Peter Anvin" <hpa@zytor.com>
To: Mike Travis <travis@sgi.com>
Cc: Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org, Jesse Barnes <jbarnes@virtuousgeek.org>,
Bjorn Helgaas <bjorn.helgaas@hp.com>,
Jacob Pan <jacob.jun.pan@intel.com>, Tejun Heo <tj@kernel.org>,
Mike Habeck <habeck@sgi.com>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [Patch 1/1] x86 pci: Add option to not assign BAR's if not already assigned
Date: Mon, 31 May 2010 09:36:41 -0700 [thread overview]
Message-ID: <4C03E599.207@zytor.com> (raw)
In-Reply-To: <4C039980.3020608@sgi.com>
On 05/31/2010 04:12 AM, Mike Travis wrote:
>
> BIOS still assigns the MMIO BAR's so the devices are alive.
OK, so it sounds like the *real* problem is our behavior on address
space exhaustion: it is rather common that a driver will only use one
BAR/address space, and sometimes can even choose which address space to
use. The right thing would be to defer error until a particular BAR is
requested by the device driver, but I'm not sure if our interfaces
permits that (and I'm on my way to the airport right now so I can't
check...)
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
next prev parent reply other threads:[~2010-05-31 16:37 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-12 18:14 [Patch 1/1] x86 pci: Add option to not assign BAR's if not already assigned 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
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 [this message]
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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