From: David S. Miller <davem@sunset.davemloft.net>
Date: Mon, 14 May 2007 09:01:52 +0000 (-0700)
Subject: [SPARC64]: Add missing cpus_empty() check in hypervisor xcall handling.
X-Git-Tag: v2.6.22-rc2~111^2~6
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17f34f0ec96783851abcabf9878f8237ac67e4e7;p=linux-2.6

[SPARC64]: Add missing cpus_empty() check in hypervisor xcall handling.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 8087d67a0c..24fdf1d0ad 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -561,6 +561,9 @@ static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t
 	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.