[PATCH V10 0/3] 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 discussions at [2].

Patch series [3] is based on recent "staging" branch
(c9a707df83aad17a6fcf2e8330ab3b5bead6fb8b xen/arm: mm: Re-implement 
setup_frame_table_mappings() with map_pages_to_xen())
and tested on Renesas Salvator-X board + H3 ES3.0 SoC (Arm64) with virtio-mmio 
based virtio-disk backend [4]
running in Dom0 (or 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.

!!! Please note, for V10 I included commit "libxl/arm: Create specific IOMMU 
node to be referred by virtio-mmio
devices" which depends on the current series [5]. All patches except "libxl: 
Add support for Virtio disk
configuration" have Stefano's and Anthony's R-b tags.

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
https://lore.kernel.org/xen-devel/1621626361-29076-1-git-send-email-olekstysh@xxxxxxxxx/
https://lore.kernel.org/xen-devel/1638982784-14390-1-git-send-email-olekstysh@xxxxxxxxx/
https://lore.kernel.org/xen-devel/1649442065-8332-1-git-send-email-olekstysh@xxxxxxxxx/
https://lore.kernel.org/xen-devel/1651598763-12162-1-git-send-email-olekstysh@xxxxxxxxx/
https://lore.kernel.org/xen-devel/1654106261-28044-1-git-send-email-olekstysh@xxxxxxxxx/

[3] https://github.com/otyshchenko1/xen/commits/libxl_virtio_next3
[4] https://github.com/otyshchenko1/virtio-disk/commits/virtio_grant

[5] 
https://lore.kernel.org/xen-devel/1653944813-17970-1-git-send-email-olekstysh@xxxxxxxxx/
    
https://lore.kernel.org/xen-devel/1654197833-25362-1-git-send-email-olekstysh@xxxxxxxxx/

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

Oleksandr Tyshchenko (2):
  libxl: Add support for Virtio disk configuration
  libxl/arm: Create specific IOMMU node to be referred by virtio-mmio
    device

 docs/man/xl-disk-configuration.5.pod.in   |  38 +-
 tools/golang/xenlight/helpers.gen.go      |   8 +
 tools/golang/xenlight/types.gen.go        |  18 +
 tools/include/libxl.h                     |   7 +
 tools/libs/light/libxl_arm.c              | 164 ++++-
 tools/libs/light/libxl_device.c           |  62 +-
 tools/libs/light/libxl_disk.c             | 140 ++++-
 tools/libs/light/libxl_internal.h         |   2 +
 tools/libs/light/libxl_types.idl          |  18 +
 tools/libs/light/libxl_types_internal.idl |   1 +
 tools/libs/light/libxl_utils.c            |   2 +
 tools/libs/util/libxlu_disk_l.c           | 959 +++++++++++++++---------------
 tools/libs/util/libxlu_disk_l.h           |   2 +-
 tools/libs/util/libxlu_disk_l.l           |   9 +
 tools/xl/xl_block.c                       |  11 +
 xen/include/public/arch-arm.h             |   7 +
 xen/include/public/device_tree_defs.h     |   3 +-
 17 files changed, 968 insertions(+), 483 deletions(-)

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2.7.4