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nvme queue

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Merge tag 'pull-nvme-20241108' of https://gitlab.com/birkelund/qemu into staging

nvme queue

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# gpg: Signature made Fri 08 Nov 2024 08:15:22 GMT
# gpg:                using RSA key 522833AA75E2DCE6A24766C04DE1AF316D4F0DE9
# gpg: Good signature from "Klaus Jensen <its@irrelevant.dk>" [full]
# gpg:                 aka "Klaus Jensen <k.jensen@samsung.com>" [full]
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#      Subkey fingerprint: 5228 33AA 75E2 DCE6 A247  66C0 4DE1 AF31 6D4F 0DE9

* tag 'pull-nvme-20241108' of https://gitlab.com/birkelund/qemu:
  hw/nvme: fix handling of over-committed queues

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2024-11-08 10:26:11 +00:00
commit ff30ed9c44
1 changed files with 12 additions and 9 deletions
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21
hw/nvme/ctrl.c
View File

@ -1520,9 +1520,16 @@ static void nvme_post_cqes(void *opaque)
stl_le_p(&n->bar.csts, NVME_CSTS_FAILED);
break;
}
QTAILQ_REMOVE(&cq->req_list, req, entry);
nvme_inc_cq_tail(cq);
nvme_sg_unmap(&req->sg);
if (QTAILQ_EMPTY(&sq->req_list) && !nvme_sq_empty(sq)) {
qemu_bh_schedule(sq->bh);
}
QTAILQ_INSERT_TAIL(&sq->req_list, req, entry);
}
if (cq->tail != cq->head) {
@ -7981,7 +7988,6 @@ static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val)
/* Completion queue doorbell write */
uint16_t new_head = val & 0xffff;
int start_sqs;
NvmeCQueue *cq;
qid = (addr - (0x1000 + (1 << 2))) >> 3;
@ -8032,18 +8038,15 @@ static void nvme_process_db(NvmeCtrl *n, hwaddr addr, int val)
trace_pci_nvme_mmio_doorbell_cq(cq->cqid, new_head);
start_sqs = nvme_cq_full(cq) ? 1 : 0;
/* scheduled deferred cqe posting if queue was previously full */
if (nvme_cq_full(cq)) {
qemu_bh_schedule(cq->bh);
}
cq->head = new_head;
if (!qid && n->dbbuf_enabled) {
stl_le_pci_dma(pci, cq->db_addr, cq->head, MEMTXATTRS_UNSPECIFIED);
}
if (start_sqs) {
NvmeSQueue *sq;
QTAILQ_FOREACH(sq, &cq->sq_list, entry) {
qemu_bh_schedule(sq->bh);
}
qemu_bh_schedule(cq->bh);
}
if (cq->tail == cq->head) {
if (cq->irq_enabled) {