On Mon, 2019-05-20 at 10:55:20 UTC, Michael Ellerman wrote:
> This test uses the PMU to count branch prediction hits/misses for a
> known loop, and compare the result to the reported spectre v2
> mitigation.
>
> This gives us a way of sanity checking that the reported mitigation is
> actually in e
This test uses the PMU to count branch prediction hits/misses for a
known loop, and compare the result to the reported spectre v2
mitigation.
This gives us a way of sanity checking that the reported mitigation is
actually in effect.
Sample output for some cases, eg:
Power9:
sysfs reports:
