tree c0e2539e84fe0b169ebd350368ca0b6da543ae53
parent 923b8f5044da753e4985ab15c1374ced2cdf616c
author Marc Zyngier <marc.zyngier@arm.com> 1402060581 +0100
committer Catalin Marinas <catalin.marinas@arm.com> 1404487012 +0100

arm64: fix el2_setup check of CurrentEL

The CurrentEL system register reports the Current Exception Level
of the CPU. It doesn't say anything about the stack handling, and
yet we compare it to PSR_MODE_EL2t and PSR_MODE_EL2h.

It works by chance because PSR_MODE_EL2t happens to match the right
bits, but that's otherwise a very bad idea. Just check for the EL
value instead.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
[catalin.marinas@arm.com: fixed arch/arm64/kernel/efi-entry.S]
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>