From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Arjan van de Ven" <arjan@infradead.org>
Cc: "Robert Richter" <robert.richter@amd.com>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@elte.hu>,
LKML <linux-kernel@vger.kernel.org>,
"Andi Kleen" <andi@firstfloor.org>
Subject: Re: Enable mmconf access to PCI ECS for all AMD fam10h systems
Date: Fri, 23 May 2008 12:06:27 -0700 [thread overview]
Message-ID: <86802c440805231206n30450bbq4db8200b22f57e41@mail.gmail.com> (raw)
In-Reply-To: <20080523111825.580423e1@infradead.org>
On Fri, May 23, 2008 at 11:18 AM, Arjan van de Ven <arjan@infradead.org> wrote:
> On Fri, 23 May 2008 10:57:22 -0700
> "Yinghai Lu" <yhlu.kernel@gmail.com> wrote:
>
>> On Fri, May 23, 2008 at 5:46 AM, Robert Richter
>> <robert.richter@amd.com> wrote:
>> > Yinghai,
>> >
>> > We would like to enable ECS for all fam10h systems. What was the
>> > reason for patch 5f0b2976 that enables it for Sun systems only? If
>> > there are no objections, this patch should be reverted.
>>
>> Someone express the concern about touching MSR. Arjan or Andi?
>>
>> for those of system that doesn't have MCFG table there, they could use
>> pci=check_enable_amd_mmconf to enable it forcely.
>
> using MMIO if the bios doesn't allow it via MCFG is a huge mistake and
> shouldn't be done.
>
> Using the extended port IO version is actually perfectly reasonable to
> me and I would encourage that to be in the kernel (and be used in favor
> of MCFG if the port IO method is there)
that extend access via port IO on AMD Fam10h doesn't support pci
domain other than domain 0.
YH
next prev parent reply other threads:[~2008-05-23 19:06 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-23 12:46 Robert Richter
2008-05-23 17:57 ` Yinghai Lu
2008-05-23 18:18 ` Arjan van de Ven
2008-05-23 19:06 ` Yinghai Lu [this message]
2008-05-26 18:06 ` Robert Richter
2007-09-03 8:17 ` [PATCH] x86: Add PCI extended config space access for AMD Barcelona Robert Richter
2008-05-28 19:02 ` Arjan van de Ven
2008-06-02 14:19 ` Robert Richter
2008-06-03 2:35 ` Arjan van de Ven
2008-06-03 7:25 ` Robert Richter
2008-06-12 18:19 ` [PATCH 1/2] x86/pci: Renaming k8-bus_64.c to amd_bus.c Robert Richter
2008-06-12 19:51 ` Yinghai Lu
2008-06-13 12:47 ` Robert Richter
2008-06-18 7:46 ` Ingo Molnar
2008-06-19 16:02 ` Robert Richter
2008-06-12 18:19 ` [PATCH 2/2] x86: Move PCI IO ECS code to x86/pci Robert Richter
2008-06-12 19:50 ` Yinghai Lu
2008-06-13 16:19 ` Robert Richter
2008-06-13 17:02 ` Glauber Costa
2008-06-13 18:16 ` Robert Richter
2008-06-13 18:26 ` Glauber Costa
2008-06-18 7:51 ` Ingo Molnar
2008-06-18 7:47 ` Ingo Molnar
2008-06-02 9:09 ` [PATCH] x86: Add PCI extended config space access for AMD Barcelona Ingo Molnar
2008-06-02 13:56 ` Robert Richter
2008-06-02 20:31 ` Yinghai Lu
2008-06-03 7:35 ` Robert Richter
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