Will Deacon 564907b771 arm64: kpti: Whitelist Cortex-A CPUs that don't implement the CSV3 field
commit 2a355ec25729053bb9a1a89b6c1d1cdd6c3b3fb1 upstream.

While the CSV3 field of the ID_AA64_PFR0 CPU ID register can be checked
to see if a CPU is susceptible to Meltdown and therefore requires kpti
to be enabled, existing CPUs do not implement this field.

We therefore whitelist all unaffected Cortex-A CPUs that do not implement
the CSV3 field.

Signed-off-by: Will Deacon <will.deacon@arm.com>
[florian: adjust whilelist location and table to stable-4.9.y]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-29 10:24:40 +01:00
..
2019-02-20 10:18:32 +01:00
2019-11-28 18:29:03 +01:00
2019-12-05 15:34:56 +01:00
2019-12-21 10:42:30 +01:00