From: Yinghai Lu <yinghai@kernel.org>
To: Brice Goglin <brice.goglin@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Ulrich Drepper <drepper@gmail.com>,
jbarnes@virtuousgeek.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
lenb@kernel.org, x86@kernel.org, linux-pci@vger.kernel.org
Subject: Re: SNB PCI root information
Date: Wed, 20 Jun 2012 19:43:22 -0700 [thread overview]
Message-ID: <CAE9FiQUkGCQ0Y=n3i=bq388T8N-vrHP2LtMTFGwry2nA+uppwA@mail.gmail.com> (raw)
In-Reply-To: <4FE22B28.9020402@gmail.com>
On Wed, Jun 20, 2012 at 12:57 PM, Brice Goglin <brice.goglin@gmail.com> wrote:
> Le 20/06/2012 21:28, Yinghai Lu a écrit :
>> On Wed, Jun 20, 2012 at 11:46 AM, Bjorn Helgaas <bhelgaas@google.com> wrote:
>
> I agree that the most common problem is that _PXM is missing. But I've
> seen at least some HP Westmere-EP platforms where _PXM exists but it is
> wrong. Last time we checked, there was no BIOS update, even if we
> reported the bug a while ago.
>
Do you have boot log or acpi dump?
I suspected that could be other problem. intel system before
sandbridge does not have IIO.
they will have ioh instead, and one ioh would connect to two cpu sockets.
but _PXM for root bus in dsdt only can return one value. Aka it is
acpi spec limitation.
for example, Sun x4800 8 sockets server would have bus 00, 40, 80, c0.
but _PXM will only return 0, 2, 3, 6.
Thanks
Yinghai
next prev parent reply other threads:[~2012-06-21 2:43 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAOPLpQfUm-2ENkbnYfXEn1nf9FHnaRk3aqQTSTBWb-CsfCUCFA@mail.gmail.com>
2012-06-16 3:03 ` SNB PCI root information Yinghai Lu
2012-06-16 8:52 ` Thomas Gleixner
2012-06-16 19:36 ` Yinghai Lu
2012-06-16 21:56 ` Bjorn Helgaas
2012-06-18 22:30 ` Ulrich Drepper
2012-06-18 23:40 ` Yinghai Lu
2012-06-19 12:36 ` Bjorn Helgaas
2012-06-19 18:20 ` Yinghai Lu
2012-06-20 17:11 ` Ulrich Drepper
2012-06-20 17:17 ` Bjorn Helgaas
2012-06-20 17:59 ` Ulrich Drepper
2012-06-20 18:37 ` Yinghai Lu
2012-06-20 18:46 ` Bjorn Helgaas
2012-06-20 19:28 ` Yinghai Lu
2012-06-20 19:34 ` Ingo Molnar
2012-06-20 20:04 ` Ulrich Drepper
2012-06-20 20:16 ` Bjorn Helgaas
2012-06-20 21:21 ` Ulrich Drepper
2012-06-20 23:58 ` Yinghai Lu
2012-06-21 2:37 ` Yinghai Lu
2012-06-21 3:50 ` Yinghai Lu
2012-06-21 12:17 ` Ulrich Drepper
2012-06-21 16:22 ` Ulrich Drepper
2012-06-21 18:11 ` Yinghai Lu
2012-06-25 17:54 ` Ulrich Drepper
2012-06-20 19:57 ` Brice Goglin
2012-06-21 2:43 ` Yinghai Lu [this message]
2012-06-21 5:56 ` Brice Goglin
2012-06-21 19:24 ` Yinghai Lu
2012-06-22 7:14 ` Brice Goglin
2012-06-22 17:28 ` Yinghai Lu
2012-06-22 20:38 ` Brice Goglin
2012-06-22 20:41 ` Yinghai Lu
2012-06-25 9:07 ` Brice Goglin
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