Re: [libvirt] [PATCH 6/6] util: Don't report CPU frequency for ARM hosts
On Mon, Dec 11, 2017 at 05:40:36PM +0100, Andrea Bolognani wrote:
Some ARM platforms, such as the original Raspberry Pi, report the
CPU frequency in the BogoMIPS field of /proc/cpuinfo, so libvirt
parsed that field and returned it through its API.
However, not only many more boards don't report any value there,
but several - including ARMv8-based server hardware, and even the
more recent Raspberry Pi 3 - use this field as originally intended:
to report the BogoMIPS value instead of the CPU frequency.
Since we have no way of detecting how the field is being used,
it's better to report no information at all rather than something
ludicrous like "your shiny 96-core aarch64 virtualization host's
CPUs are running at a whopping 100 MHz".
Can we perhaps get useful freq data from sysfs instead ? I know my
x86 machines report freq there, but I'm unsure if that reporting
is x86-specific or not.
Regards,
Daniel
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