commit cac7d1676a19fd13a43a8c4c2f406d361b62bd03
author Arunachalam Ganapathy <arunachalam.ganapathy@arm.com> Thu Jul 08 09:35:57 2021 +0100
committer Arunachalam Ganapathy <arunachalam.ganapathy@arm.com> Fri Jul 23 10:33:59 2021 +0100
tree 9034048bd8ec2cc7abc7f1b8e2b541a194be9602
parent 88e336cfa232447aaffc56d46bab716eaeb78193

fix(el3_runtime): fix SVE and AMU extension enablement flags

If SVE are enabled for both Non-secure and Secure world along with AMU
extension, then it causes the TAM_BIT in CPTR_EL3 to be set upon exit
from bl31. This restricts access to the AMU register set in normal
world. This fix maintains consistency in both TAM_BIT and CPTR_EZ_BIT
by saving and restoring CPTR_EL3 register from EL3 context.

Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Change-Id: Id76ce1d27ee48bed65eb32392036377716aff087