MSIX spec requires that device can be operated with all vectors masked, by polling.
So the following patchset (lightly tested) adds this ability: when driver reads ISR, the device recalls a pending notification, and returns pending status in the ISR register. The polling driver can operate as follows: - map all VQs and config to the same vector - poll ISR to get status - this also flushes VQ updates to memory - handle config change or VQ event depending on ISR Comments? -- 1.7.5.53.gc233e _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
