* Anton Blanchard <an...@samba.org> wrote:
>
> Events on POWER7 can roll back if a speculative event doesn't
> eventually complete. Unfortunately in some rare cases they will
> raise a performance monitor exception. We need to catch this to
> ensure we reset the PMC. In all cases the PMC will be 256 or less
> cycles from overflow.
>
> Signed-off-by: Anton Blanchard <an...@samba.org>
> Cc: sta...@kernel.org
> ---
>
> I would prefer not to add the PVR check, but I think we want to limit
> this workaround to POWER7. Would a cpu feature be preferable?
There was no objection from the PowerPC folks so i'll send this fix Linuswards,
ok?
Thanks,
Ingo
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