Messages in this thread | | | From | Bharat Kumar Gogada <> | Subject | NVMe Poll CQ on timeout | Date | Thu, 26 Apr 2018 14:59:06 +0000 |
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Hi,
We are testing NVMe cards on ARM64 platform, the card uses legacy interrupts. Intermittently we are hitting following case in drivers/nvme/host/pci.c /* * Did we miss an interrupt? */ if (__nvme_poll(nvmeq, req->tag)) { dev_warn(dev->ctrl.device, "I/O %d QID %d timeout, completion polled\n", req->tag, nvmeq->qid); return BLK_EH_HANDLED; }
Can anyone tell when does nvme_timeout gets invoked ? What does "Did we miss an interrupt mean" ? Does it mean host missing to service a interrupt raised by EP card ?
Regards, Bharat
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