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Re: [Xen-devel] Re: HVM DomU, msi_translate=0, MSI/MSI-X PCI passthrough

from [Jeremy Fitzhardinge] [Permanent Link][Original]
To: Sander Eikelenboom <linux@xxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: HVM DomU, msi_translate=0, MSI/MSI-X PCI passthrough fails.
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Wed, 08 Dec 2010 11:51:33 -0800
Cc: "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>, Mark Adams <mark@xxxxxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
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On 12/08/2010 09:15 AM, Sander Eikelenboom wrote:
> It seems Jeremy has had some troubles with the Intel 82754L as well.
>
> Don't know if he has got those resolved, or has to use workarounds ?

Its basically a bug in that particular chip, I think.  The workaround is
to disable ASPM for it; I'm not sure if the upstream driver does that
yet, but the workaround used to be to completely disable ASPM
(pcie_aspm=off on the kernel command line, and in the BIOS).

    J

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