tree ac67959df7b5d536b4c662ed1f0a0e2f19970980
parent c1136a849fc21470313e4e852a22ae4b9db50440
author Arunachalam Ganapathy <arunachalam.ganapathy@arm.com> 1681912422 +0100
committer Arunachalam Ganapathy <arunachalam.ganapathy@arm.com> 1684932042 +0100

tftf(rme): check if RMM doesn't leak Realm contents in SVE registers

This test verifies that the Realm contents in SVE registers are not
seen by NS world once the Realm returns back to the host. This test
performs the below steps:

1. Set NS world SVE VQ to max and write a known pattern.
2. Set NS world ZCR_EL2 with VQ as 0 (128 bits).
3. Create Realm with max SVE VQ
4. Call Realm to fill in Z registers
5. Once Realm returns, NS sets ZCR_EL2 with max VQ and reads the
   Z registers.
6. The upper bits of Z registers must be either 0 or the old values
   filled by NS world at step 1.

Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Change-Id: I8205190d1ce9c37b99d35cf5b15df21ca9b838c3