2d2642f483
When re-entering EDK2 from a high level OS such as Linux, the GICv3 may be configured to use split priority drop and deactivate (EOImode == 1), whereas EDK2's GICv3 driver assumes the default setting of EOImode == 0. So clear the EOImode bit explicitly when taking control of the GIC. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>