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H A Drmmd_main.ca4cc85c129d031d9c887cf59b1baeaef18a43010 Thu Dec 09 15:41:37 UTC 2021 Subhasish Ghosh <subhasish.ghosh@arm.com> fix(rmmd/sve): enable/disable SVE/FPU for Realms

This patch enable/disable SVE/FPU for Realms depending
upon it's state in NS.

When this feature is enabled, traps to EL3 on SVE/FPU access from
Realms are disabled. However, RMM must ensure that the Realm <-> NS
SVE/FPU registers are not corrupted by each other and Realms do
not leak information to NS.

Change-Id: I0a27a055787976507017b72879ba6458f066624e
Signed-off-by: Subhasish Ghosh <subhasish.ghosh@arm.com>