>>> On 11.04.17 at 02:59, <chao....@intel.com> wrote: > As you know, with VT-d PI enabled, hardware can directly deliver external > interrupts to guest without any VMM intervention. It will reduces overall > interrupt latency to guest and reduces overheads otherwise incurred by the > VMM for virtualizing interrupts. In my mind, it's an important feature to > interrupt virtualization. > > But VT-d PI feature is disabled by default on Xen for some corner > cases and bugs. Based on Feng's work, we have fixed those corner > cases related to VT-d PI. Do you think it is a time to enable VT-d PI by > default. If no, could you list your concerns so that we can resolve them?
I don't recall you addressing the main issue (blocked vCPU-s list length; see the comment next to the iommu_intpost definition). Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
