From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Wei Wang <wei.wang2@amd.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"Keir (Xen.org)" <keir@xen.org>, Jan Beulich <JBeulich@suse.com>
Subject: Re: [PATCH] amd iommu: re-enable iommu msi if dom0 disabled it
Date: Fri, 8 Jun 2012 14:31:52 +0100 [thread overview]
Message-ID: <4FD1FEC8.5000708@citrix.com> (raw)
In-Reply-To: <4FD1FDE2.5010907@amd.com>
On 08/06/12 14:28, Wei Wang wrote:
> Hi Jan,
> I found that recent dom0 (e.g 3.4 pv_ops) disables iommu msi capability
> for some reasons and iommu cannot generate any interrupts in this case.
> Attached patch re-enables it in device assignment.
Under which circumstances should dom0 able to play with the IOMMUs ?
Surely the fact that dom0 can play with the IOMMUs is a bug in itself.
>
> Thanks,
> Wei
>
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> Advanced Micro Devices GmbH
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next prev parent reply other threads:[~2012-06-08 13:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-08 13:28 [PATCH] amd iommu: re-enable iommu msi if dom0 disabled it Wei Wang
2012-06-08 13:31 ` Andrew Cooper [this message]
2012-06-08 13:41 ` Wei Wang
2012-06-08 14:08 ` Jan Beulich
2012-06-08 14:16 ` Wei Wang
2012-06-08 13:47 ` Jan Beulich
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