Messages in this thread | | | Date | Tue, 4 Apr 2023 13:19:08 +0800 | Subject | Re: [PATCH v3 1/6] dmaengine: idxd: Add enable/disable device IOPF feature | From | Baolu Lu <> |
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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
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