Re: [PATCH v3 1/6] dmaengine: idxd: Add enable/disable device IOPF feature

[Baolu Lu]

On 3/24/23 8:02 PM, Lu Baolu wrote:
> The iommu subsystem requires IOMMU_DEV_FEAT_IOPF must be enabled before
> and disabled after IOMMU_DEV_FEAT_SVA, if device's I/O page faults rely
> on the IOMMU. Add explicit IOMMU_DEV_FEAT_IOPF enabling/disabling in this
> driver.
>
> At present, missing IOPF enabling/disabling doesn't cause any real issue,
> because the IOMMU driver places the IOPF enabling/disabling in the path
> of SVA feature handling. But this may change.
>
> Reviewed-by: Dave Jiang<dave.jiang@xxxxxxxxx>
> Reviewed-by: Fenghua Yu<fenghua.yu@xxxxxxxxx>
> Reviewed-by: Kevin Tian<kevin.tian@xxxxxxxxx>
> Signed-off-by: Lu Baolu<baolu.lu@xxxxxxxxxxxxxxx>

Hi Dave and Fenghua,

The following iommu patches depends on this one. Can I route it to
Linus through the iommu tree?

Best regards,
baolu