Re: [Xen-devel] [PATCH] AMD/IOMMU: revert "amd/iommu: assign iommu devices to Xen"

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

On Mon, Jun 03, 2019 at 07:00:25AM -0600, Jan Beulich wrote:
> This reverts commit b6bd02b7a877f9fac2de69e64d8245d56f92ab25. The change
> was redundant with amd_iommu_detect_one_acpi() already calling
> pci_ro_device().
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

I think this needs to be squashed together with your `AMD/IOMMU: don't
"add" IOMMUs` patch, or else PVH dom0 will break because
update_paging_mode will find devices not behind an IOMMU assigned to
dom0, thus returning an error and crashing dom0.

Thanks, Roger.

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