[RESEND PATCH V5 0/2] Virtio support for toolstack on Arm (Was "IOREQ feature (+ virtio-mmio) on Arm")

[Oleksandr Tyshchenko <olekstysh@xxxxxxxxx>]

From: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>

Hello all.

The purpose of this patch series is to add missing virtio-mmio bits to Xen 
toolstack on Arm.
The Virtio support for toolstack [1] was postponed as the main target was to 
upstream IOREQ/DM
support on Arm in the first place. Now, we already have IOREQ support in, so we 
can resume Virtio
enabling work. You can find previous discussion at [2].

Patch series [3] was reworked and rebased on recent "staging branch"
(972ba1d x86/shadow: streamline shadow_get_page_from_l1e()) and tested on
Renesas Salvator-X board + H3 ES3.0 SoC (Arm64) with "updated" virtio-mmio disk 
backend [4]
running in Driver domain and unmodified Linux Guest running on existing
virtio-blk driver (frontend). No issues were observed. Guest domain 
'reboot/destroy'
use-cases work properly.

Any feedback/help would be highly appreciated.

[1] 
https://lore.kernel.org/xen-devel/1610488352-18494-24-git-send-email-olekstysh@xxxxxxxxx/
https://lore.kernel.org/xen-devel/1610488352-18494-25-git-send-email-olekstysh@xxxxxxxxx/
[2]
https://lists.xenproject.org/archives/html/xen-devel/2021-01/msg02403.html
https://lists.xenproject.org/archives/html/xen-devel/2021-01/msg02536.html
[3] https://github.com/otyshchenko1/xen/commits/libxl_virtio
[4] https://github.com/xen-troops/virtio-disk/commits/ioreq_ml3

Julien Grall (1):
  libxl: Introduce basic virtio-mmio support on Arm

Oleksandr Tyshchenko (1):
  libxl: Add support for Virtio disk configuration

 docs/man/xl-disk-configuration.5.pod.in   |  27 +
 tools/include/libxl.h                     |   6 +
 tools/libs/light/libxl_arm.c              | 133 ++++-
 tools/libs/light/libxl_device.c           |  38 +-
 tools/libs/light/libxl_disk.c             |  99 +++-
 tools/libs/light/libxl_types.idl          |   4 +
 tools/libs/light/libxl_types_internal.idl |   1 +
 tools/libs/light/libxl_utils.c            |   2 +
 tools/libs/util/libxlu_disk_l.c           | 881 +++++++++++++++---------------
 tools/libs/util/libxlu_disk_l.h           |   2 +-
 tools/libs/util/libxlu_disk_l.l           |   1 +
 tools/xl/xl_block.c                       |  11 +
 xen/include/public/arch-arm.h             |   7 +
 13 files changed, 764 insertions(+), 448 deletions(-)

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2.7.4