tree 5a4273d0322ec9567c2bb472a10d9d9c3cb9908a
parent 4a284a4084ff780758a90f0f9a4ca201f921d076
author Dimitris Papastamos <dimitris.papastamos@arm.com> 1526466974 +0100
committer Dimitris Papastamos <dimitris.papastamos@arm.com> 1527075948 +0100

Add support for dynamic mitigation for CVE-2018-3639

Some CPUS may benefit from using a dynamic mitigation approach for
CVE-2018-3639.  A new SMC interface is defined to allow software
executing in lower ELs to enable or disable the mitigation for their
execution context.

It should be noted that regardless of the state of the mitigation for
lower ELs, code executing in EL3 is always mitigated against
CVE-2018-3639.

NOTE: This change is a compatibility break for any platform using
the declare_cpu_ops_workaround_cve_2017_5715 macro.  Migrate to
the declare_cpu_ops_wa macro instead.

Change-Id: I3509a9337ad217bbd96de9f380c4ff8bf7917013
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>