tree 05577b194b98d7154c2381dbeddc80ac0528832d
parent 55eeb7b08f8ab9f5d9614e16a0c772342fd4713e
author Soby Mathew <soby.mathew@arm.com> 1633959526 +0100
committer Soby Mathew <soby.mathew@arm.com> 1636104783 +0000

fix(gpt_rme): add necessary barriers and remove cache clean

This patch adds necessary barriers after GPT entries are modified
so that the writes are observed correctly by the GPC hardware.
The shareability of GPC fetches are changed from OSH to ISH so
that they align with the shareability of MMU attributes for the
region. Thus by adding a dsbishst() between the GPT L1 entry
write as part of granule migration at runtime, we can now remove
the clean cache maintenance operation (CMO) for that region.

Signed-off-by: Soby Mathew <soby.mathew@arm.com>
Signed-off-by: Robert Wakim <robert.wakim@arm.com>
Change-Id: Ib9e405b106f0db95c7fbdb26773c0ed41663a5b4