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Re: [Qemu-devel] [PATCH RFC v2 02/12] vfio: linux-headers update for vfi
From: |
Dong Jia Shi |
Subject: |
Re: [Qemu-devel] [PATCH RFC v2 02/12] vfio: linux-headers update for vfio-ccw |
Date: |
Wed, 18 Jan 2017 10:51:17 +0800 |
User-agent: |
Mutt/1.7.0 (2016-08-17) |
* Alex Williamson <address@hidden> [2017-01-17 14:51:42 -0700]:
> On Thu, 12 Jan 2017 08:25:03 +0100
> Dong Jia Shi <address@hidden> wrote:
>
> > From: Xiao Feng Ren <address@hidden>
> >
> > This is a placeholder for a linux-headers update.
> >
> > Signed-off-by: Xiao Feng Ren <address@hidden>
> > ---
> > include/standard-headers/asm-s390/vfio_ccw.h | 28
> > ++++++++++++++++++++++++++++
> > linux-headers/linux/vfio.h | 17 +++++++++++++++++
> > 2 files changed, 45 insertions(+)
> > create mode 100644 include/standard-headers/asm-s390/vfio_ccw.h
> >
> > diff --git a/include/standard-headers/asm-s390/vfio_ccw.h
> > b/include/standard-headers/asm-s390/vfio_ccw.h
> > new file mode 100644
> > index 0000000..cddc09b
> > --- /dev/null
> > +++ b/include/standard-headers/asm-s390/vfio_ccw.h
> > @@ -0,0 +1,28 @@
> > +/*
> > + * Interfaces for vfio-ccw
> > + *
> > + * Copyright IBM Corp. 2017
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of the GNU General Public License (version 2 only)
> > + * as published by the Free Software Foundation.
> > + *
> > + * Author(s): Dong Jia Shi <address@hidden>
> > + */
> > +
> > +#ifndef _VFIO_CCW_H_
> > +#define _VFIO_CCW_H_
> > +
> > +#include "standard-headers/linux/types.h"
> > +
> > +struct ccw_io_region {
> > +#define ORB_AREA_SIZE 12
> > + uint8_t orb_area[ORB_AREA_SIZE];
> > +#define SCSW_AREA_SIZE 12
> > + uint8_t scsw_area[SCSW_AREA_SIZE];
> > +#define IRB_AREA_SIZE 96
> > + uint8_t irb_area[IRB_AREA_SIZE];
> > + uint32_t ret_code;
> > +} QEMU_PACKED;
> > +
> > +#endif
>
> This is really part of the uapi for the vfio-ccw mdev device, isn't it?
Yes, it is.
> Should it really be buried in asm-s390 in the kernel?
>
We had an internal discussion on this question before, since we think
this interface is strongly s390 dependent, we put it here. What do you
suggest? Thanks,
[...]
--
Dong Jia
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