Re: [PATCH] cpu_map: Introduce A64FX
On Wed, Aug 31, 2022 at 02:30:52PM +0200, Jiri Denemark wrote:
On Wed, Aug 31, 2022 at 09:22:16 +0000, Liu Yiding wrote:
> Add A64FX as a supported cpu model.
>
> Signed-off-by: Liu Yiding <liuyd.fnst(a)fujitsu.com>
> ---
> src/cpu_map/arm_A64FX.xml | 6 ++++++
> src/cpu_map/arm_vendors.xml | 1 +
> src/cpu_map/index.xml | 3 +++
> src/cpu_map/meson.build | 1 +
> 4 files changed, 11 insertions(+)
> create mode 100644 src/cpu_map/arm_A64FX.xml
CPU detection for ARM is a bit awkward and not very useful in practice.
It will (in some cases) report the host CPU in host capabilities, but
that's it. The CPU from host capabilities cannot really be used in
general for specifying a guest CPU in domain XML and it would not even
make a lot of sense as I believe the only really supported CPU for KVM
is "host" (mode="host-passthrough" in domain XML).
This still lets it be used for a guest with TCG, which has no requirement
to use 'host'.
I'm not saying the patch is wrong, I'm just trying to make
sure you
don't expect something more from implementing this patch.
With regards,
Daniel
--
|: https://berrange.com -o- https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org -o- https://fstop138.berrange.com :|
|: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|