linux-kernel - Re: [PATCH v4 0/8] vhost: support for cross endian guests

Open Source and information security mailing list archives

Date:	Tue, 21 Apr 2015 09:50:29 +0200
From:	Greg Kurz <gkurz@...ux.vnet.ibm.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, linux-api@...r.kernel.org,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v4 0/8] vhost: support for cross endian guests

On Fri, 17 Apr 2015 11:18:13 +0200
Greg Kurz <gkurz@...ux.vnet.ibm.com> wrote:
> On Fri, 10 Apr 2015 12:15:00 +0200
> Greg Kurz <gkurz@...ux.vnet.ibm.com> wrote:
> 
> > Hi,
> > 
> > This patchset allows vhost to be used with legacy virtio when guest and host
> > have a different endianness.
> > 
> > Patch 7 got rewritten according to Cornelia's and Michael's comments. I have
> > also introduced patch 8 that brings BE vnet headers support to tun/macvtap.
> > 
> > This series is enough to have vhost_net working flawlessly. I could
> > succesfully reboot guests from ppc64 to ppc64le and vice-versa on ppc64
> > and ppc64le hosts.
> > 
> 
> Michael,
> 
> I am ready to post v5 with the changes suggested by Cornelia... Do you have any
> extra comments on this v4 ? 
> 

Ping ?

> --
> Greg
> 
> > ---
> > 
> > Greg Kurz (8):
> >       virtio: introduce virtio_is_little_endian() helper
> >       tun: add tun_is_little_endian() helper
> >       macvtap: introduce macvtap_is_little_endian() helper
> >       vringh: introduce vringh_is_little_endian() helper
> >       vhost: introduce vhost_is_little_endian() helper
> >       virtio: add explicit big-endian support to memory accessors
> >       vhost: feature to set the vring endianness
> >       macvtap/tun: add VNET_BE flag
> > 
> > 
> >  drivers/net/Kconfig              |   12 ++++++
> >  drivers/net/macvtap.c            |   69 ++++++++++++++++++++++++++++++++++-
> >  drivers/net/tun.c                |   71 +++++++++++++++++++++++++++++++++++-
> >  drivers/vhost/Kconfig            |   10 +++++
> >  drivers/vhost/vhost.c            |   76 ++++++++++++++++++++++++++++++++++++++
> >  drivers/vhost/vhost.h            |   25 ++++++++++---
> >  include/linux/virtio_byteorder.h |   24 +++++++-----
> >  include/linux/virtio_config.h    |   19 +++++++---
> >  include/linux/vringh.h           |   19 +++++++---
> >  include/uapi/linux/if_tun.h      |    2 +
> >  include/uapi/linux/vhost.h       |    9 +++++
> >  11 files changed, 303 insertions(+), 33 deletions(-)
> > 
> > --
> > Greg
> > 
> > _______________________________________________
> > Virtualization mailing list
> > Virtualization@...ts.linux-foundation.org
> > https://lists.linuxfoundation.org/mailman/listinfo/virtualization
> > 
> 

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