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[Qemu-devel] [PATCH] vl.c: Check max_cpus limit instead of smp_cpus

From: Eduardo Habkost
Subject: [Qemu-devel] [PATCH] vl.c: Check max_cpus limit instead of smp_cpus
Date: Wed, 7 May 2014 17:19:47 -0300

If a given machine have max_cpus set, not just smp_cpus needs to be
limited, but the total number of CPUs (considering CPU hotplug) for the

As smp_parse() already ensures smp_cpus <= max_cpus, we just need to
check if max_cpus exceeds the limit.

Signed-off-by: Eduardo Habkost <address@hidden>
 vl.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/vl.c b/vl.c
index 236f95e..e317cc9 100644
--- a/vl.c
+++ b/vl.c
@@ -4039,9 +4039,9 @@ int main(int argc, char **argv, char **envp)
     smp_parse(qemu_opts_find(qemu_find_opts("smp-opts"), NULL));
     machine->max_cpus = machine->max_cpus ?: 1; /* Default to UP */
-    if (smp_cpus > machine->max_cpus) {
-        fprintf(stderr, "Number of SMP cpus requested (%d), exceeds max cpus "
-                "supported by machine `%s' (%d)\n", smp_cpus,  machine->name,
+    if (max_cpus > machine->max_cpus) {
+        fprintf(stderr, "Total number of CPUs (%d), exceeds maximum "
+                "supported by machine `%s' (%d)\n", max_cpus,  machine->name,

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