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Re: [Xen-devel] xen-unstable warn_on in msi.c:636

from [Jan Beulich]

[Permanent Link][Original]

To:	"George Dunlap" <George.Dunlap@xxxxxxxxxxxxx>
Subject:	Re: [Xen-devel] xen-unstable warn_on in msi.c:636
From:	"Jan Beulich" <JBeulich@xxxxxxxxxx>
Date:	Thu, 30 Jun 2011 13:17:25 +0100
Cc:	Olaf Hering <olaf@xxxxxxxxx>, Yunhong Jiang <yunhong.jiang@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx
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>>> On 30.06.11 at 14:03, George Dunlap <George.Dunlap@xxxxxxxxxxxxx> wrote:
> Olaf / Jan / all, what do you think of the attached patch, which
> teaches the MSI code how to deal with 0 pbas?

No, definitely not an option. They simply must not be zero. The
problem just is that the BARs for virtual functions all read as zero
(and the real value must be calculated from information from the
PF's config space).

Jan

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