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Re: [Xen-devel] [PATCH] AMD/IOMMU: Fix passthrough following c/s d7cfeb7c13e

From: Jennifer Herbert <Jennifer.Herbert@xxxxxxxxxx>

Date: Thu, 14 Nov 2019 11:45:09 +0000

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Cc: Juergen Gross <jgross@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Delivery-date: Thu, 14 Nov 2019 11:45:15 +0000

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List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 11/11/19 20:55, Andrew Cooper wrote:

"AMD/IOMMU: don't blindly allocate interrupt remapping tables" introduces a
call at runtime from amd_iommu_add_device() to amd_iommu_set_intremap_table()
which is still marked as __init.

On one AMD Rome machine we have, this results in a crash the moment we try to
use an SR-IOV VF in a VM.

Reported-by: Jennifer Herbert <jennifer.herbert@xxxxxxxxxx>
Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Tested-by: Jennifer Herbert <jennifer.herbert@xxxxxxxxxx> This fixes the fatal page fault I found, which wasn't seen on 4.11. Cheers, -Jenny _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel

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