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Re: [Qemu-devel] [RFC 00/15] s390: vfio-ccw dasd ipl support
From: |
Cornelia Huck |
Subject: |
Re: [Qemu-devel] [RFC 00/15] s390: vfio-ccw dasd ipl support |
Date: |
Fri, 6 Jul 2018 08:42:29 +0200 |
On Thu, 5 Jul 2018 13:25:28 -0400
"Jason J. Herne" <address@hidden> wrote:
> This is to support booting from vfio-ccw dasd devices. We basically implement
> the real hardware ipl procedure. This allows for booting Linux guests on
> vfio-ccw devices.
Wow :)
>
> vfio-ccw's channel program prefetch algorithm complicates ipl because most ipl
> channel programs dynamically modify themselves. Details on the ipl process and
> how we worked around this issue can be found in docs/devel/s390-dasd-ipl.txt.
Yes, that must have been a challenge.
Does this work with any dasd? Or did you concentrate on ECKD?
(yeah, I'll also read what you sent :)
>
> Jason J. Herne (15):
> s390 vfio-ccw: Add bootindex property and IPLB data
> s390-bios: decouple cio setup from virtio
> s390-bios: decouple common boot logic from virtio
> s390-bios: Extend find_dev() for non-virtio devices
> s390-bios: Factor finding boot device out of virtio code path
> s390-bios: Clean up cio.h
> s390-bios: Decouple channel i/o logic from virtio
> s390-bios: Map low core memory
> s390-bios: ptr2u32 and u32toptr
> s390-bios: Support for running format-0/1 channel programs
> s390-bios: Refactor virtio to run channel programs via cio
> s390-bios: Use control unit type to determine boot method
> s390-bios: Add channel command codes/structs needed for dasd-ipl
> s390-bios: Support booting from real dasd device
> s390-bios: Use sense ccw to ensure consistent device state at boot
> time
>
> docs/devel/s390-dasd-ipl.txt | 132 +++++++++++++++++++++
> hw/s390x/ipl.c | 15 +++
> hw/s390x/s390-ccw.c | 9 ++
> hw/vfio/ccw.c | 13 +-
> hw/vfio/ccw.h | 38 ++++++
> include/hw/s390x/s390-ccw.h | 1 +
> pc-bios/s390-ccw/Makefile | 2 +-
> pc-bios/s390-ccw/cio.c | 181 ++++++++++++++++++++++++++++
> pc-bios/s390-ccw/cio.h | 150 ++++++++++++++++-------
> pc-bios/s390-ccw/dasd-ipl.c | 249
> +++++++++++++++++++++++++++++++++++++++
> pc-bios/s390-ccw/dasd-ipl.h | 16 +++
> pc-bios/s390-ccw/libc.h | 12 ++
> pc-bios/s390-ccw/main.c | 162 ++++++++++++++++---------
> pc-bios/s390-ccw/netmain.c | 1 +
> pc-bios/s390-ccw/s390-arch.h | 113 ++++++++++++++++++
> pc-bios/s390-ccw/s390-ccw.h | 9 --
> pc-bios/s390-ccw/virtio-blkdev.c | 1 +
> pc-bios/s390-ccw/virtio.c | 46 +-------
> 18 files changed, 986 insertions(+), 164 deletions(-)
> create mode 100644 docs/devel/s390-dasd-ipl.txt
> create mode 100644 hw/vfio/ccw.h
> create mode 100644 pc-bios/s390-ccw/cio.c
> create mode 100644 pc-bios/s390-ccw/dasd-ipl.c
> create mode 100644 pc-bios/s390-ccw/dasd-ipl.h
> create mode 100644 pc-bios/s390-ccw/s390-arch.h
>
- [Qemu-devel] [RFC 05/15] s390-bios: Factor finding boot device out of virtio code path, (continued)
- [Qemu-devel] [RFC 05/15] s390-bios: Factor finding boot device out of virtio code path, Jason J. Herne, 2018/07/05
- [Qemu-devel] [RFC 12/15] s390-bios: Use control unit type to determine boot method, Jason J. Herne, 2018/07/05
- [Qemu-devel] [RFC 02/15] s390-bios: decouple cio setup from virtio, Jason J. Herne, 2018/07/05
- [Qemu-devel] [RFC 11/15] s390-bios: Refactor virtio to run channel programs via cio, Jason J. Herne, 2018/07/05
- [Qemu-devel] [RFC 03/15] s390-bios: decouple common boot logic from virtio, Jason J. Herne, 2018/07/05
- [Qemu-devel] [RFC 07/15] s390-bios: Decouple channel i/o logic from virtio, Jason J. Herne, 2018/07/05
- [Qemu-devel] [RFC 14/15] s390-bios: Support booting from real dasd device, Jason J. Herne, 2018/07/05
- Re: [Qemu-devel] [RFC 00/15] s390: vfio-ccw dasd ipl support, no-reply, 2018/07/05
- Re: [Qemu-devel] [RFC 00/15] s390: vfio-ccw dasd ipl support,
Cornelia Huck <=