Describes the versions of Xen to be included in meta-virtualization and recipe maintenance in release branches.
Signed-off-by: Christopher Clark <[email protected]> Reviewed-by: Bertrand Marquis <[email protected]> --- recipes-extended/xen/README | 50 +++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/recipes-extended/xen/README b/recipes-extended/xen/README index f286bb5..b9117f0 100644 --- a/recipes-extended/xen/README +++ b/recipes-extended/xen/README @@ -36,3 +36,53 @@ as XSAs (http://xenbits.xen.org/xsa/). The easiest way to include those is to drop patches in 'recipes-extened/xen/files' and create a bbappend adding those patches to SRC_URI and they will be applied. Alternatively, you can override the SRC_URI to a git repo you provide that contains the patches. + +recipe maintenance +------------------ + +# Xen version update + +The following rules shall be followed to define which versions of Xen have +recipes in meta-virtualization: + +- Before a Yocto release meta-virtualization shall have recipes for: + - the latest stable major version of Xen, and + + - the current version of the Xen master branch (known as the git recipes) + + - In addition, there may also be recipes included for the previous stable + major version of Xen, in the case where the latest stable major version + is new and the prior stable major version of Xen is to be the preferred + version for the Yocto release + +- On Yocto LTS and the latest stable Yocto release branch, the preferred Xen + major version that is present when the Yocto release is issued must stay + supported and the recipes shall be regularly updated to follow updates + available in the Xen stable branch for that Xen major release. + +- On Yocto LTS and the latest stable Yocto release branch, the recipes for the + latest Xen major version shall also be regularly updated to follow updates + available in the Xen stable branch for that Xen major release. + +- On the master / in-development Yocto branch, new Xen recipes shall be added + when there is a new Xen major release. + + - depending on the timing of the next Yocto release, the new recipes may + be preferred, or the prior major version recipes may remain preferred + until after the Yocto release + + - the recipes for the previous Xen stable major version shall be removed + from the branch when it is no longer the preferred Xen version + +- On Yocto LTS and the latest stable Yocto release branch, new Xen recipes + shall be added when there is a new Xen major release. + + - The preferred version of the Xen recipes shall always stay at the same + Xen major version once a Yocto release has been issued, and shall receive + regular updates to track the stable Xen branch of that Xen release. + + - When new Xen recipes are added to a Yocto branch for a new Xen major + version, then any older Xen recipes present, except for the original + preferred version recipes, shall be marked as not updated anymore by + adding a comment inside the recipes. The older recipes will not receive + any build tests or be updated to follow the Xen branch. -- 2.25.1
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