Messages in this thread | | | Date | Wed, 8 Mar 2023 19:51:36 -0800 | Subject | Re: [PATCH v2 1/5] dmaengine: idxd: Add enable/disable device IOPF feature | From | Fenghua Yu <> |
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On 3/8/23 18:56, 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> > Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Fenghua Yu <fenghua.yu@intel.com>
Thanks.
-Fenghua
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