Re: [Xen-devel] [PATCH v8 0/8] Allow setting up shared memory areas between VMs from xl config files

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

Hi Wei,

Any chances you can review this series soon? I would love for it to be
merged before the 4.12 code freeze.

FYI I am making progress upstreaming the device tree binding, they asked
for a very minor change, which I am happy to include in the next version
of the series:

https://marc.info/?l=devicetree&m=153989826510707&w=2


On Mon, 8 Oct 2018, Stefano Stabellini wrote:
> Hi,
> 
> This series implements a new xl config entry. Users can use the new
> config entry to statically setup shared memory areas among VMs that
> don't have grant table support so that they could communicate with each
> other through the static shared memory areas.
> 
> It was originally developed by Zhongze, I am just updating the last few
> issued that were address during the last round of reviews in January. I
> tested the feature on ARM and works fine.
> 
> Cheers,
> 
> Stefano
> 
> 
> Main changes in v8:
> - remove "add xen,dmabuf nodes" patch
> - add "map reserved-memory regions as normal memory in dom0" patch
> - send new device tree binding request to devicetree.org
> 
> 
> 
> The following changes since commit 85b00385827e4e061b2ff38b549c03d0f1e66b6a:
> 
>   xen/sched: Drop set_current_state() (2018-10-08 18:34:55 +0100)
> 
> are available in the git repository at:
> 
>   http://xenbits.xenproject.org/git-http/people/sstabellini/xen-unstable.git 
> share_mem-v8
> 
> for you to fetch changes up to fc00e34ce9924b5915deacd881ae7cd6888510ba:
> 
>   xen/arm: map reserved-memory regions as normal memory in dom0 (2018-10-08 
> 16:34:09 -0700)
> 
> ----------------------------------------------------------------
> Stefano Stabellini (2):
>       xen/arm: export shared memory regions as reserved-memory on device tree
>       xen/arm: map reserved-memory regions as normal memory in dom0
> 
> Zhongze Liu (6):
>       xen: xsm: flask: introduce XENMAPSPACE_gmfn_share for memory sharing
>       libxl: introduce a new structure to represent static shared memory 
> regions
>       libxl: support mapping static shared memory areas during domain creation
>       libxl: support unmapping static shared memory areas during domain 
> destruction
>       libxl:xl: add parsing code to parse "libxl_static_sshm" from xl config 
> files
>       docs: documentation about static shared memory regions
> 
>  docs/man/xl-static-shm-configuration.pod.5 | 264 +++++++++++++++
>  docs/man/xl.cfg.pod.5.in                   |   8 +
>  docs/misc/xenstore-paths.markdown          |  47 +++
>  tools/flask/policy/modules/xen.if          |   2 +
>  tools/libxl/Makefile                       |   5 +-
>  tools/libxl/libxl.h                        |   8 +
>  tools/libxl/libxl_arch.h                   |   8 +-
>  tools/libxl/libxl_arm.c                    |  76 ++++-
>  tools/libxl/libxl_create.c                 |  27 ++
>  tools/libxl/libxl_dom.c                    |   2 +-
>  tools/libxl/libxl_domain.c                 |   5 +
>  tools/libxl/libxl_internal.h               |  16 +
>  tools/libxl/libxl_sshm.c                   | 512 
> +++++++++++++++++++++++++++++
>  tools/libxl/libxl_types.idl                |  32 +-
>  tools/libxl/libxl_x86.c                    |  21 +-
>  tools/libxl/libxlu_sshm.c                  | 206 ++++++++++++
>  tools/libxl/libxlutil.h                    |   6 +
>  tools/xl/xl_parse.c                        |  25 +-
>  xen/arch/arm/domain_build.c                |   7 +
>  xen/arch/arm/mm.c                          |   7 +-
>  xen/include/public/memory.h                |   8 +
>  xen/include/xsm/dummy.h                    |  14 +
>  xen/include/xsm/xsm.h                      |   6 +
>  xen/xsm/dummy.c                            |   1 +
>  xen/xsm/flask/hooks.c                      |   9 +
>  xen/xsm/flask/policy/access_vectors        |   5 +
>  26 files changed, 1315 insertions(+), 12 deletions(-)
>  create mode 100644 docs/man/xl-static-shm-configuration.pod.5
>  create mode 100644 tools/libxl/libxl_sshm.c
>  create mode 100644 tools/libxl/libxlu_sshm.c
> 

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