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

[Baolu Lu <baolu.lu@linux.intel.com>]

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@intel.com>
>>> Reviewed-by: Fenghua Yu<fenghua.yu@intel.com>
>>> Reviewed-by: Kevin Tian<kevin.tian@intel.com>
>>> Signed-off-by: Lu Baolu<baolu.lu@linux.intel.com>
>>
>> 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