On Mon, 1 Feb 2021 at 15:39, Daniel P. Berrangé <berra...@redhat.com> wrote: > > It is useful to know which CPUs satisfy each x86-64 ABI > compatibility level, when dealing with guest OS that require > something newer than the baseline ABI. > > These ABI levels are defined in: > > https://gitlab.com/x86-psABIs/x86-64-ABI/ > > and supported by GCC, CLang, GLibC and more. > > Signed-off-by: Daniel P. Berrangé <berra...@redhat.com> > +ABI compatibility levels for CPU models > +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > + > +The x86_64 architecture has a number of `ABI compatibility levels`_ > +defined. Traditionally most operating systems and toolchains would > +only target the original baseline ABI. It is expected that in > +future OS and toolchains are likely to target newer ABIs. The > +following table illustrates which ABI compatibility levels can be > +satisfied by the QEMU CPU models > + > +.. _ABI compatibility levels: https://gitlab.com/x86-psABIs/x86-64-ABI/ > + > +.. csv-table:: x86-64 ABI compatibility levels > + :file: cpu-models-x86-abi.csv > + :widths: 40,15,15,15,15 > + :header-rows: 1
Apart from the QEMU/KVM specific CPU models, why is this something we should be documenting rather than, say, the people specifying what the ABI compatiblity levels are ? thanks -- PMM
