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

[Baolu Lu]

On 4/4/23 12:57 AM, Dave Jiang wrote:
> On 4/2/23 10:49 PM, Baolu Lu wrote:
> > 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?
>
> Hi Baolu, you'll need an ack from Vinod, who is the dmaengine subsystem 
> maintainer. I have no objections.

Hi Vinod,

Does this work work for you?

Best regards,
baolu