[xen staging] automation: Information about running containers for a different arch

[patchbot@xxxxxxx]

commit fb7485788fd7db3b95f4e7fc9bfdfe9ef38e383f
Author:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Thu Sep 29 10:51:31 2022 +0100
Commit:     Stefano Stabellini <stefano.stabellini@xxxxxxx>
CommitDate: Thu Sep 29 08:53:58 2022 -0700

    automation: Information about running containers for a different arch
    
    Adding pointer to 'qemu-user-static'.
    
    Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Reviewed-by: Michal Orzel <michal.orzel@xxxxxxx>
    Acked-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Release-acked-by: Henry Wang <Henry.Wang@xxxxxxx>
---
 automation/build/README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/automation/build/README.md b/automation/build/README.md
index 00305eed03..4cc1acb6b4 100644
--- a/automation/build/README.md
+++ b/automation/build/README.md
@@ -102,3 +102,16 @@ make -C automation/build suse/opensuse-tumbleweed PUSH=1
 
 [registry]: https://gitlab.com/xen-project/xen/container_registry
 [registry help]: https://gitlab.com/help/user/project/container_registry
+
+
+Building/Running container for a different architecture
+-------------------------------------------------------
+
+On a x86 host, it is possible to build and run containers for other arch (like
+running a container made for Arm) with docker taking care of running the
+appropriate software to emulate that arch. For this, simply install the package
+`qemu-user-static`, and that's it. Then you can start an Arm container on x86
+host like you would start an x86 container.
+
+If that doesn't work, you might find some information on
+[multiarch/qemu-user-static](https://github.com/multiarch/qemu-user-static).
--
generated by git-patchbot for /home/xen/git/xen.git#staging