tree 94c42abf83792a968c72bfa6304a8c3d5442de58
parent 1b42804d27b1c2623309950e9b203b11f4c67f4f
author Mark Rutland <mark.rutland@arm.com> 1436539592 +0100
committer Catalin Marinas <catalin.marinas@arm.com> 1436543233 +0100

arm64: entry32: remove pointless register assignment

We currently set x27 in compat_sys_sigreturn_wrapper and
compat_sys_rt_sigreturn_wrapper, similarly to what we do with r8/why on
32-bit ARM, in an attempt to prevent sigreturns from being restarted.

However, on arm64 we have always used pt_regs::syscallno for syscall
restarting (for both native and compat tasks), and x27 is never
inspected again before being overwritten in kernel_exit.

This patch removes the pointless register assignments.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>