From 750009665bbebcbb1a091fddb3e27507a3bc3ab7 Mon Sep 17 00:00:00 2001 From: attilio Date: Sun, 22 May 2011 20:24:36 +0000 Subject: Add a "safety belt" check for lsb setting. I don't think it is really necessary because the cpumask is known to be != 0, but it is just in case. Requested by: kib --- sys/i386/xen/pmap.c | 1 + 1 file changed, 1 insertion(+) (limited to 'sys/i386/xen/pmap.c') diff --git a/sys/i386/xen/pmap.c b/sys/i386/xen/pmap.c index 1149b6f..2f39538 100644 --- a/sys/i386/xen/pmap.c +++ b/sys/i386/xen/pmap.c @@ -1730,6 +1730,7 @@ pmap_lazyfix(pmap_t pmap) /* Find least significant set bit. */ lsb = cpusetobj_ffs(&mask); + MPASS(lsb != 0); lsb--; CPU_SETOF(lsb, &mask); mtx_lock_spin(&smp_ipi_mtx); -- cgit v1.1