Re: [PATCH v2] iommu/amd: Fix interrupt remapping when disable guest_mode

[Joerg Roedel]

On Mon, Jun 26, 2017 at 04:28:04AM -0500, Suravee Suthikulpanit wrote:
> Pass-through devices to VM guest can get updated IRQ affinity
> information via irq_set_affinity() when not running in guest mode.
> Currently, AMD IOMMU driver in GA mode ignores the updated information
> if the pass-through device is setup to use vAPIC regardless of guest_mode.
> This could cause invalid interrupt remapping.
> 
> Also, the guest_mode bit should be set and cleared only when
> SVM updates posted-interrupt interrupt remapping information.
> 
> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
> Cc: Joerg Roedel <jroedel@xxxxxxx>

Nervermind, I added this fixes line and applied the patch:

	Fixes: d98de49a53e48 ('iommu/amd: Enable vAPIC interrupt remapping mode by default'