From: "Jan Beulich" <JBeulich@suse.com>
To: Roger Pau Monne <roger.pau@citrix.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>,
Brian Woods <brian.woods@amd.com>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Subject: Re: [PATCH v5 5/6] amd/iommu: assign iommu devices to Xen
Date: Tue, 20 Nov 2018 09:14:08 -0700 [thread overview]
Message-ID: <5BF432D002000078001FE243@prv1-mh.provo.novell.com> (raw)
In-Reply-To: <20181120160153.45259-6-roger.pau@citrix.com>
>>> On 20.11.18 at 17:01, <roger.pau@citrix.com> wrote:
> AMD IOMMU devices are exposed on the PCI bus, and thus are assigned by
> default to the hardware domain. This can cause issues because the
> IOMMU devices themselves are not behind an IOMMU, so update_paging_mode will
> return an error if Xen tries to expand the page tables of a domain
> that has assigned devices not behind an IOMMU. update_paging_mode
> failing will cause the domain to be destroyed.
>
> Fix this by hiding PCI IOMMU devices, so they are not assigned to the
> hardware domain.
>
> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
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next prev parent reply other threads:[~2018-11-20 16:14 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-20 16:01 [PATCH v5 0/6] x86/pvh: fixes for PVH Dom0 Roger Pau Monne
2018-11-20 16:01 ` [PATCH v5 1/6] vpci: fix updating the command register Roger Pau Monne
2018-11-26 11:20 ` Jan Beulich
2018-11-20 16:01 ` [PATCH v5 2/6] vpci: fix deferral of long operations Roger Pau Monne
2018-11-26 11:26 ` Jan Beulich
2018-11-26 11:41 ` Jan Beulich
2018-11-26 11:57 ` Paul Durrant
2018-11-20 16:01 ` [PATCH v5 3/6] vpci/msix: carve p2m hole for MSIX MMIO regions Roger Pau Monne
2018-11-20 16:01 ` [PATCH v5 4/6] pci: add a segment parameter to pci_hide_device Roger Pau Monne
2018-11-26 11:29 ` Jan Beulich
2018-11-20 16:01 ` [PATCH v5 5/6] amd/iommu: assign iommu devices to Xen Roger Pau Monne
2018-11-20 16:14 ` Jan Beulich [this message]
2018-11-20 16:01 ` [PATCH v5 6/6] amd/iommu: skip bridge devices when updating IOMMU page tables Roger Pau Monne
2018-11-20 16:45 ` Jan Beulich
2018-11-20 23:26 ` Woods, Brian
2018-11-21 9:21 ` Jan Beulich
2018-11-21 10:37 ` Roger Pau Monné
2018-11-21 10:58 ` Jan Beulich
2018-11-21 11:51 ` Roger Pau Monné
2018-11-21 13:23 ` Jan Beulich
2018-11-22 12:47 ` Roger Pau Monné
2018-11-22 13:20 ` Jan Beulich
2018-11-23 14:36 ` Roger Pau Monné
[not found] ` <60B388B7020000D60063616D@prv1-mh.provo.novell.com>
2018-11-26 8:42 ` Jan Beulich
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