Michael Tokarev wrote:
(yes there's no typo in $subject, it's an old formatting
bug in printk).
When booting kvm guest on an AMD CPU, guest kernel prints
this warning:
WARNING: This combination of AMDprocessors is not suitable for SMP.
be it SMP or UP guest. What's wrong with this "combination",
and can it be fixed?
The qemu64 CPU model KVM injects into the guest lets it see an AMD K7
with 64bit extension. Only some AMD K7 (Athlon-MP) were certified for
SMP support, so this code warns the user about an unsupported hardware.
When running KVM you can ignore this warning, as it only applies to
non-KVM capable processors and has no meaning for virtual SMP anyway.
If you like this warning to disappear, you can use "-cpu host" (and
probably loose migration capability) or wait for the new safe64 CPU
type, which will use family 15 instead of 6.
Regards,
Andre.
--
Andre Przywara
AMD-Operating System Research Center (OSRC), Dresden, Germany
Tel: +49 351 448 3567 12
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