Re: [PATCH] docs/about: Automatically deprecate versioned machine types older than 6 years

Hi Thomas, On 30/4/24 08:45, Thomas Huth wrote: > Old machine types often have bugs or work-arounds that affect our > possibilities to move forward with the QEMU code base (see for example > https://gitlab.com/qemu-project/qemu/-/issues/2213 for a bug that likely > cannot be fixed without breaking live migration with old machine types, > or https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg04516.html or > commit ea985d235b86). So instead of going through the process of manually > deprecating old machine types again and again, let's rather add an entry > that can stay, which declares that machine types older than 6 years are > considered as deprecated automatically. Six years should be sufficient to > support the release cycles of most Linux distributions. Thanks for taking that out of my plate :) IIRC 6 years was because of some old RHEL version, otherwise could 5 years be enough? (maybe it could be good enough for this old RHEL version as of QEMU v10.0).

> Signed-off-by: Thomas Huth <thuth(a)redhat.com&gt; > --- > docs/about/deprecated.rst | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst > index 6d595de3b6..fe69e2d44c 100644 > --- a/docs/about/deprecated.rst > +++ b/docs/about/deprecated.rst > @@ -220,6 +220,17 @@ is a chance the code will bitrot without anyone noticing. > System emulator machines > ------------------------ > +Versioned machine types older than 6 years > +'''''''''''''''''''''''''''''''''''''''''' > + > +Starting with the release of QEMU 10.0, versioned machine types older than Why can't we start with QEMU 9.1? > +6 years will automatically be considered as deprecated and might be due to > +removal without furthor notice. For example, this affects machine types like > +pc-i440fx-X.Y, pc-q35-X.Y, pseries-X.Y, s390-ccw-virtio-X.Y or virt-X.Y where > +X is the major number and Y is the minor number of the old QEMU version. > +If you are still using machine types from QEMU versions older than 6 years, > +please update your setting to use a newer versioned machine type instead. Reviewed-by: Philippe Mathieu-Daudé <philmd(a)linaro.org&gt;