From: Joe Talbott <josepht@dragonflybsd.org>
Date: Thu, 19 Jul 2007 20:18:00 +0000 (+0000)
Subject: Let the user know if they attempt to start a vkernel with vm.vkernel_enable
X-Git-Tag: v2.0.1~2562
X-Git-Url: https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/dc7503af9e01458a1b6dff88489fd7e3e1509784

Let the user know if they attempt to start a vkernel with vm.vkernel_enable
set to 0.
---

diff --git a/sys/platform/vkernel/platform/init.c b/sys/platform/vkernel/platform/init.c
index 5b74a9da13..a4e60377db 100644
--- a/sys/platform/vkernel/platform/init.c
+++ b/sys/platform/vkernel/platform/init.c
@@ -31,7 +31,7 @@
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  * 
- * $DragonFly: src/sys/platform/vkernel/platform/init.c,v 1.44 2007/07/10 18:35:38 josepht Exp $
+ * $DragonFly: src/sys/platform/vkernel/platform/init.c,v 1.45 2007/07/19 20:18:00 josepht Exp $
  */
 
 #include <sys/types.h>
@@ -141,6 +141,8 @@ main(int ac, char **av)
 	int c;
 	int i;
 	int n;
+	int real_vkernel_enable;
+	size_t real_vkernel_enable_size;
 	
 	save_ac = ac;
 	save_av = av;
@@ -154,6 +156,12 @@ main(int ac, char **av)
 #endif
 	lwp_cpu_lock = LCL_NONE;
 
+	real_vkernel_enable_size = sizeof(real_vkernel_enable);
+	sysctlbyname("vm.vkernel_enable", &real_vkernel_enable, &real_vkernel_enable_size, NULL, 0);
+	
+	if (real_vkernel_enable == 0)
+		errx(1,"vm.vkernel_enable is %d, must be set to 1 to execute a vkernel!", real_vkernel_enable);
+
 	real_ncpus_size = sizeof(real_ncpus);
 	sysctlbyname("hw.ncpu", &real_ncpus, &real_ncpus_size, NULL, 0);