On 01/10/2018 03:18 AM, Fam Zheng wrote: > This is a new protocol driver that exclusively opens a host NVMe > controller through VFIO. It achieves better latency than linux-aio by > completely bypassing host kernel vfs/block layer. >
> +static BlockDriver bdrv_nvme = {
> + .format_name = "nvme",
> + .protocol_name = "nvme",
> + .instance_size = sizeof(BDRVNVMeState),
> +
> + .bdrv_parse_filename = nvme_parse_filename,
> + .bdrv_file_open = nvme_file_open,
> + .bdrv_close = nvme_close,
> + .bdrv_getlength = nvme_getlength,
> +
> + .bdrv_co_preadv = nvme_co_preadv,
> + .bdrv_co_pwritev = nvme_co_pwritev,
> + .bdrv_co_flush_to_disk = nvme_co_flush,
> + .bdrv_reopen_prepare = nvme_reopen_prepare,
> +
> + .bdrv_co_get_block_status = nvme_co_get_block_status,
Semantic conflict with my pending patches to switch to byte-based block
status in the drivers.
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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