commit 1c7c13ab3c18c9024b6fe49cfce65c1413527b0d
author Justin Chadwell <justin.chadwell@arm.com> Thu Jul 18 14:25:33 2019 +0100
committer Justin Chadwell <justin.chadwell@arm.com> Mon Sep 09 16:23:33 2019 +0100
tree e7c745457b0027bc4b3a4906d599605a0ccdeac4
parent 60021ea0ee5c0c0653d938abdedce64eddf9cfe2

Enable MTE support in both secure and non-secure worlds

This patch adds support for the new Memory Tagging Extension arriving in
ARMv8.5. MTE support is now enabled by default on systems that support
at EL0. To enable it at ELx for both the non-secure and the secure
world, the compiler flag CTX_INCLUDE_MTE_REGS includes register saving
and restoring when necessary in order to prevent register leakage
between the worlds.

Change-Id: I2d4ea993d6b11654ea0d4757d00ca20d23acf36c
Signed-off-by: Justin Chadwell <justin.chadwell@arm.com>