]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
arm64: fix el2_setup check of CurrentEL
authorMarc Zyngier <marc.zyngier@arm.com>
Fri, 6 Jun 2014 13:16:21 +0000 (14:16 +0100)
committerCatalin Marinas <catalin.marinas@arm.com>
Fri, 4 Jul 2014 15:16:52 +0000 (16:16 +0100)
commit974c8e450b9327a03453a4a450a2030b1bd42b5f
treec0e2539e84fe0b169ebd350368ca0b6da543ae53
parent923b8f5044da753e4985ab15c1374ced2cdf616c
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>
arch/arm64/include/asm/ptrace.h
arch/arm64/kernel/efi-entry.S
arch/arm64/kernel/head.S