linux-kernel - Re: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware bug question

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Message-ID: <CAErSpo6h4sOmmanXBE3EHBDh2u4yNbpMcs6p05XG1nrO2rwvXg@mail.gmail.com>
Date:	Wed, 28 Nov 2012 16:54:03 -0700
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Justin Piszcz <jpiszcz@...idpixels.com>
Cc:	Bruno Prémont <bonbons@...ux-vserver.org>,
	support@...ermicro.com, linux-kernel@...r.kernel.org,
	Dan Williams <djbw@...com>
Subject: Re: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware
 bug question

On Tue, Nov 27, 2012 at 6:49 AM, Justin Piszcz <jpiszcz@...idpixels.com> wrote:
>
>> It looks like maybe you don't have CONFIG_PCI_MMCONFIG turned on?
>
> ===> FOR I/OAT DMA
> Latest status, it _appears_ its working on the X9SRL-F now, thank you!
>
> 1) Supermicro X9SRL-F (GOOD)
> [    0.738510] ioatdma: Intel(R) QuickData Technology Driver 4.00
> [    0.738719] ioatdma 0000:00:04.0: irq 75 for MSI/MSI-X
> [    0.739088] ioatdma 0000:00:04.1: irq 76 for MSI/MSI-X
> [    0.739408] ioatdma 0000:00:04.2: irq 77 for MSI/MSI-X
> [    0.739739] ioatdma 0000:00:04.3: irq 78 for MSI/MSI-X
> [    0.740040] ioatdma 0000:00:04.4: irq 79 for MSI/MSI-X
> [    0.740342] ioatdma 0000:00:04.5: irq 80 for MSI/MSI-X
> [    0.740670] ioatdma 0000:00:04.6: irq 81 for MSI/MSI-X
> [    0.740971] ioatdma 0000:00:04.7: irq 82 for MSI/MSI-X

Good.  You have two issues, and I'm going to separate them and only
address the first one here.  I opened a bug report [1] against the
IOAT driver.  It should do something more useful when
CONFIG_PCI_MMCONFIG=n so we don't have to debug this again in the
future.  But otherwise, it sounds like this issue is resolved.

[1] https://bugzilla.kernel.org/show_bug.cgi?id=51101
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