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Re: [Qemu-devel] [PATCH v7 00/13] basic channel IO passthrough infrastru
From: |
Dong Jia Shi |
Subject: |
Re: [Qemu-devel] [PATCH v7 00/13] basic channel IO passthrough infrastructure based on vfio |
Date: |
Mon, 8 May 2017 13:31:17 +0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
* Cornelia Huck <address@hidden> [2017-05-05 14:22:34 +0200]:
> On Fri, 5 May 2017 04:03:39 +0200
> Dong Jia Shi <address@hidden> wrote:
>
> > The patch series introduce a basic channel I/O passthrough
> > infrastructure based on vfio.
> > - Focus on supporting dasd-eckd(cu_type/dev_type = 0x3990/0x3390) as
> > the target device.
> > - Support new qemu parameters in the style of:
> > -machine s390-ccw-virtio(,s390-squash-mcss=on|off) \
> > -device vfio-ccw,sysfsdev=$MDEV_PATH
> > We want to support real (i.e. not virtual) channel devices even for
> > guests that do not support MCSS-E (where guests may see devices from
> > any channel subsystem image at once). As all virtio-ccw devices are in
> > css 0xfe (and show up in the default css 0 for guests not activating
> > MCSS-E), we need an option to squash e.g. passed-through channel devices
> > from their real css (0-3, or 0 for hosts not activating MCSS-E) into
> > the default css, that is what the new machine option s390-squash-css is
> > added.
>
> Basically looks good, some small nitpicking and the virtual vs. virtio
> issue I noticed.
Thanks for the review! I replied in the coressponding threads.
>
> Let's wait if others have more comments. Hopefully, the 3270 changes
> will by then be in master and you can rebase on top of them :)
Roger!
--
Dong Jia Shi
- [Qemu-devel] [PATCH v7 13/13] MAINTAINERS: Add vfio-ccw maintainer, (continued)
Re: [Qemu-devel] [PATCH v7 13/13] MAINTAINERS: Add vfio-ccw maintainer, Alex Williamson, 2017/05/11
[Qemu-devel] [PATCH v7 12/13] vfio/ccw: update sense data if a unit check is pending, Dong Jia Shi, 2017/05/04
Re: [Qemu-devel] [PATCH v7 00/13] basic channel IO passthrough infrastructure based on vfio, Cornelia Huck, 2017/05/05
- Re: [Qemu-devel] [PATCH v7 00/13] basic channel IO passthrough infrastructure based on vfio,
Dong Jia Shi <=