powerpc/powernv: Remove POWER9 PVR version check for entry and uaccess flushes

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These aren't necessarily POWER9 only, and it's not to say some new
vulnerability may not get discovered on other processors for which
we would like the flexibility of having the workaround enabled by
firmware.

Remove the restriction that the workarounds only apply to POWER9.

However POWER7 and POWER8 are not affected, and they may not have
older firmware that does not advertise this, so clear these workarounds
manually.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
[mpe: Incorporate changes from Nick, reword comment slightly.]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210503130243.891868-5-npiggin@gmail.com

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Nicholas Piggin 2021-05-03 23:02:43 +10:00 • committed by Michael Ellerman

parent a1d2b210ff

commit d02fa40d75

1 changed files with 7 additions and 3 deletions

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arch/powerpc/platforms/powernv/setup.c

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