Commit 02fead75 authored by David S. Miller's avatar David S. Miller
Browse files

[SPARC64]: Do not try to synchronize %stick registers on SUN4V. 



Writes by privileged code are not allowed.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7aa62645

arch/sparc64/kernel/smp.c

+5 −1
Original line number Diff line number Diff line
@@ -1278,6 +1278,10 @@ int __devinit __cpu_up(unsigned int cpu) 
		if (!cpu_isset(cpu, cpu_online_map)) {

			ret = -ENODEV;

		} else {

			/* On SUN4V, writes to %tick and %stick are

			 * not allowed.

			 */

			if (tlb_type != hypervisor)

				smp_synchronize_one_tick(cpu);

		}

	}

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