From: Andi Kleen <ak@suse.de>
To: "Andreas Herrmann" <andreas.herrmann3@amd.com>
Cc: "Robert Richter" <robert.richter@amd.com>,
patches@x86-64.org, linux-kernel@vger.kernel.org
Subject: Re: [patches] [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona
Date: Mon, 3 Sep 2007 12:15:03 +0200 [thread overview]
Message-ID: <200709031215.03473.ak@suse.de> (raw)
In-Reply-To: <20070903083242.GA22144@alberich.amd.com>
> But it is needed for some devices for full functionality.
Examples? I can only think of PCI express error reporting, which
few drivers implement anyways and isn't really a show stopper
if it doesn't work. Besides I would be surprised if it even works
on the cheap desktop boards which have MCFG less BIOS.
> E.g. for perfmon (family 0x10/extended inerrupts) extended config space
> access is a prerequisite.
How so?
>
> IMHO it is best to try to use MMCONFIG if it's working and to use
> a fallback (e.g. CF8 ECS access for family 0x10) if available.
We only put in workarounds if there is a serious problem otherwise (e.g. not
booting etc.). I just don't see this here.
-Andi
next prev parent reply other threads:[~2007-09-03 10:16 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070830174311.221133000@amd.com>
[not found] ` <20070830174311.536394000@amd.com>
2007-09-01 10:11 ` [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona Andi Kleen
2007-09-03 8:32 ` [patches] " Andreas Herrmann
2007-09-03 10:15 ` Andi Kleen [this message]
2007-09-03 11:27 ` Robert Richter
2007-09-03 12:48 ` Andi Kleen
2007-09-03 14:48 ` Robert Richter
2007-09-03 15:24 ` Andi Kleen
2007-09-04 6:54 ` Yinghai Lu
2007-09-04 7:20 ` Andi Kleen
2007-09-03 11:31 ` Andreas Herrmann
2007-09-03 12:52 ` Andi Kleen
[not found] ` <20070830174311.344418000@amd.com>
2007-09-01 10:14 ` [patch 1/5] x86: Add AMD64 Barcelona PMU MSR definitions Andi Kleen
2007-09-03 8:17 [patch 0/5] (resent) x86: PCI extended config space access on AMD Barcelona CPUs Robert Richter
2007-09-03 8:17 ` [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona Robert Richter
2007-09-03 8:31 ` Arjan van de Ven
2007-09-03 9:17 ` [patches] " Andreas Herrmann
2007-09-03 11:33 ` Arjan van de Ven
2007-09-03 15:47 ` Andreas Herrmann
2007-09-05 5:58 ` H. Peter Anvin
2007-09-05 8:44 ` Robert Richter
2007-09-05 10:12 ` H. Peter Anvin
2007-09-05 10:35 ` Robert Richter
2007-09-05 11:05 ` Arne Georg Gleditsch
2007-09-05 16:13 ` Andreas Herrmann
2007-09-05 22:42 ` Yinghai Lu
2007-09-06 8:31 ` Arne Georg Gleditsch
2007-09-06 9:48 ` H. Peter Anvin
2007-09-06 17:41 ` Jesse Barnes
2007-09-06 17:50 ` Yinghai Lu
2007-09-06 17:48 ` Jesse Barnes
2007-09-06 17:48 ` Yinghai Lu
2007-09-05 15:00 ` Andreas Herrmann
2007-09-06 10:14 ` Arjan van de Ven
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