On 23/07/18 13:56, Shaokun Zhang wrote: > From: Miao Zhong <[email protected]> > > When PRI queue occurs overflow, driver should update the OVACKFLG to > the PRIQ consumer register, otherwise subsequent PRI requests will not > be processed.
Since the upstream driver doesn't enable PRI in endpoints, I'm not sure this patch makes sense on its own, but it seems correct anyway. I had a similar patch in my initial SVA RFC, but for some reason dropped it in later versions (https://patchwork.kernel.org/patch/9594021/) It's worth noting that the event queue doesn't have the same problem, because the SMMU can record new events even if the overflow hasn't been acknowledged. Thanks, Jean _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
