rr support for i7-7700 cpu

Robert O'Callahan robert at ocallahan.org
Tue Aug 15 21:47:41 UTC 2017


On Wed, Aug 16, 2017 at 9:01 AM, Wade Hennessey <wadehennessey at gmail.com>
wrote:

> I'm trying to run rr (version 4.5.0) on an i7-7700 cpu and I get this
> error:
>
> [FATAL /home/roc/rr/rr/src/PerfCounters.cc:162:get_cpu_microarch() errno:
> EOPNOTSUPP] CPU 0x906e0 unknown.
> Aborted
>
> However, i7-7700 is a Kaby Lake cpu and the release notes for version 4.5
> say that support for Kaby lake was added. Is this just a bug in how rr is
> trying to identify the cpu or am I missing something? -wade
>

Kaby Lake has multiple CPUID IDs. 0x906e0 is supported on rr master.

Rob
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