[RFC,05/10] arm64: kernel: avoid x18 as an arbitrary temp register
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Message ID 20170712144424.19528-6-ard.biesheuvel@linaro.org
State New
Headers show

Commit Message

Ard Biesheuvel July 12, 2017, 2:44 p.m. UTC
The code in __cpu_soft_restart() uses x18 as an arbitrary temp register,
which will shortly be disallowed. So use x8 instead.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
---
 arch/arm64/kernel/cpu-reset.S | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Patch
diff mbox

diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S
index 65f42d257414..56e637e558c5 100644
--- a/arch/arm64/kernel/cpu-reset.S
+++ b/arch/arm64/kernel/cpu-reset.S
@@ -44,11 +44,11 @@  ENTRY(__cpu_soft_restart)
 	mov	x0, #HVC_SOFT_RESTART
 	hvc	#0				// no return
 
-1:	mov	x18, x1				// entry
+1:	mov	x8, x1				// entry
 	mov	x0, x2				// arg0
 	mov	x1, x3				// arg1
 	mov	x2, x4				// arg2
-	br	x18
+	br	x8
 ENDPROC(__cpu_soft_restart)
 
 .popsection