[Xen-devel] [PATCH] x86/Dom0: Don't allow dom0_max_vcpus to be zero

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

In case dom0_max_vcpus is incorrectly specified on boot line make sure
we will still boot.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
---
 xen/arch/x86/domain_build.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/arch/x86/domain_build.c b/xen/arch/x86/domain_build.c
index e5c845c..378e650 100644
--- a/xen/arch/x86/domain_build.c
+++ b/xen/arch/x86/domain_build.c
@@ -92,6 +92,8 @@ static void __init parse_dom0_max_vcpus(const char *s)
     else                               /* N, N-, or N-M */
     {
         opt_dom0_max_vcpus_min = simple_strtoul(s, &s, 0);
+        if ( opt_dom0_max_vcpus_min == 0 )
+            opt_dom0_max_vcpus_min = 1;
         if ( !*s )                    /* N */
             opt_dom0_max_vcpus_max = opt_dom0_max_vcpus_min;
         else if ( *s++ == '-' && *s ) /* N-M */
-- 
1.8.1.4


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