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Subject[patch 54/69] SPARC64: Add missing cpus_empty() check in hypervisor xcall handling.
-stable review patch.  If anyone has any objections, please let us know.

From: David Miller <>

arch/sparc64/kernel/smp.c | 3 +++
1 file changed, 3 insertions(+)

--- linux-
+++ linux-
@@ -566,6 +566,9 @@ static void hypervisor_xcall_deliver(u64
unsigned long flags, status;
int cnt, retries, this_cpu, prev_sent, i;

+ if (cpus_empty(mask))
+ return;
/* We have to do this whole thing with interrupts fully disabled.
* Otherwise if we send an xcall from interrupt context it will
* corrupt both our mondo block and cpu list state.
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