Ensure all memory operations are complete by before wfi. For example, the

cpu could have just been in uvm_pageidlezero.
2014-11-09 09:21:57 +00:00 · 2014-11-09 09:21:57 +00:00 · 2f301a00a7
commit 2f301a00a7
parent 3882ea1f75
1 changed files with 1 additions and 0 deletions
--- a/sys/arch/arm/arm/cpufunc_asm_armv7.S
+++ b/sys/arch/arm/arm/cpufunc_asm_armv7.S
@ -34,6 +34,7 @@
 	.arch	armv7a

 ENTRY(armv7_cpu_sleep)
+	dsb
 	wfi				@ wait for an interrupt
 	b	irq_idle_entry		@ assume we got an interrupt
 END(armv7_cpu_sleep)