linux-kernel - Re: [PATCH v3 0/7] vhost: support for cross endian guests

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Message-ID: <20150407180820.473d54be@bahia.local>
Date:	Tue, 7 Apr 2015 18:08:20 +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 v3 0/7] vhost: support for cross endian guests

On Tue, 7 Apr 2015 17:55:08 +0200
"Michael S. Tsirkin" <mst@...hat.com> wrote:

> On Tue, Apr 07, 2015 at 02:09:29PM +0200, Greg Kurz wrote:
> > Hi,
> > 
> > This patchset allows vhost to be used with legacy virtio when guest and host
> > have a different endianness.
> > 
> > Patches 1-6 remain the same as the previous post. Patch 7 was heavily changed
> > according to MST's comments.
> 
> This still doesn't actually work, right?
> tun and macvtap need new ioctls too ...
> 

Yes they do. I already have a patch but I wasn't sure if I should send it
along this series... Since it looks like there will be a v4, I'll add the
tun/macvtap patch.

Thanks.

--
Greg

> > ---
> > 
> > Greg Kurz (7):
> >       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
> > 
> > 
> >  drivers/net/macvtap.c            |   11 ++++++--
> >  drivers/net/tun.c                |   11 ++++++--
> >  drivers/vhost/Kconfig            |   10 +++++++
> >  drivers/vhost/vhost.c            |   55 ++++++++++++++++++++++++++++++++++++++
> >  drivers/vhost/vhost.h            |   34 +++++++++++++++++++----
> >  include/linux/virtio_byteorder.h |   24 ++++++++++-------
> >  include/linux/virtio_config.h    |   19 +++++++++----
> >  include/linux/vringh.h           |   19 +++++++++----
> >  include/uapi/linux/vhost.h       |    5 +++
> >  9 files changed, 156 insertions(+), 32 deletions(-)
> > 
> > --
> > Greg
> 

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