[SPDK] Re: The difference between vhost-nvme and vhost-blk

thanks, follow up questions:
1. if I still use Vhost-user-blk-pci in qemu and with nvme ssd(bdev), i cant' have access to the nvme feature in guest(shadow door bell). is that correct?
2. in the vfio-user solution, does the interrupt sending from the ssd(nvme) go through the qemu/kvm? or it go straight to the guest kernel?
3. when will the vfio-user be available? does kvm have same delima here?


thank you very much!




---- 回复的原邮件 ----
| 发件人 | Liu, Changpeng<changpeng.liu(a)intel.com> |
| 日期 | 2022年03月08日 16:33 |
| 收件人 | Storage Performance Development Kit<spdk(a)lists.01.org> |
| 抄送至 | |
| 主题 | [SPDK] Re: The difference between vhost-nvme and vhost-blk |
Previously SPDK extended QEMU with a separate driver to enable vhost-nvme, this driver
was not accepted by QEMU, so now we support emulated NVMe with a new solution
"vfio-user", again the driver for supporting this is still under code review of QEMU community,
but SPDK already supports this.

> -----Original Message-----
> From: zbhhbz(a)yeah.net <zbhhbz(a)yeah.net>
> Sent: Tuesday, March 8, 2022 4:29 PM
> To: spdk(a)lists.01.org
> Subject: [SPDK] The difference between vhost-nvme and vhost-blk
>
> Could someone help me understand the difference between vhost-nvme and
> vhost-blk?
> The online doc only shows there is vhost-user-blk-pci, why not vhost-user-nvme-
> pci?
> There is little doc fined in github/spdk and the qemu itself doesn't help either
> Thanks!
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