KVM: cpu_relax() during spin waiting for reboot

It doesn't really matter, but if we spin, we should spin in a more relaxed manner. This way, if something goes wrong at least it won't contribute to global warming. Signed-off-by: Avi Kivity <[email protected]> Signed-off-by: Marcelo Tosatti <[email protected]>
cbmeeks · Oct 24, 2010 · 624d84c · 624d84c
1 parent 49e9d55
commit 624d84c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
@@ -2022,7 +2022,7 @@ asmlinkage void kvm_handle_fault_on_reboot(void)
 		/* spin while reset goes on */
 		local_irq_enable();
 		while (true)
-			;
+			cpu_relax();
 	}
 	/* Fault while not rebooting.  We want the trace. */
 	BUG();