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luporl
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2020-11-05T16:36:39.690761Z
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[PowerPC] hwpmc: add support for POWER8/9 PMCs

This change adds support for POWER8 and POWER9 PMCs (bare metal and
pseries).
All PowerISA 2.07B non-random events are supported.

Implementation was based on that of PPC970.

Reviewed by:	jhibbits
Sponsored by:	Eldorado Research Institute (eldorado.org.br)
Differential Revision:	https://reviews.freebsd.org/D26110

END