Re: [Qemu-devel] [PATCH 1/1] Add vhost-pci-blk driver

[Maxim Levitsky <mlevitsk@redhat.com>]

On Fri, 2018-11-02 at 19:15 +0000, Vitaly Mayatskikh wrote:
> This driver uses the kernel-mode acceleration for virtio-blk and
> allows to get a near bare metal disk performance inside a VM.
> 
> Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com>
> ---
>  configure                  | 10 +++++++
>  default-configs/virtio.mak |  1 +
>  hw/block/Makefile.objs     |  1 +
>  hw/virtio/virtio-pci.c     | 60 ++++++++++++++++++++++++++++++++++++++
>  hw/virtio/virtio-pci.h     | 19 ++++++++++++
>  5 files changed, 91 insertions(+)
> 

I think that you haven't sent all the files because at least some of the files
are missing.
For example the build fails with missing 'hw/virtio/vhost-blk.h'

Also I don't see here any mention on how the qemu passes to the in-kernel
driver, the file which the in-kernel driver is supposed to read/write.
I don't think that generic vhost backend have this functionality because till
now it was limited to iscsi, and thus qemu just passed to the kernel, the wwpn
of the device.

Best regards,
       Maxim Levitsky