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16c79bac8e
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.
Change-Id: I1af7495be64d40a1e05a201f19e5f066b0d4bcc7
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Tao Huang <huangtao@rock-chips.com>
(cherry picked from commit 2a355ec257)