x86: make x86_64 accept the max_cpus parameter
The parameter passing parsing is done in the common smpboot.c
Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/mpparse_64.c b/arch/x86/kernel/mpparse_64.c
index 72ab140..2a1f788 100644
--- a/arch/x86/kernel/mpparse_64.c
+++ b/arch/x86/kernel/mpparse_64.c
@@ -32,6 +32,7 @@
/* Have we found an MP table */
int smp_found_config;
+unsigned int __cpuinitdata maxcpus = NR_CPUS;
/*
* Various Linux-internal data structures created from the
@@ -115,6 +116,12 @@
return;
}
+ if (num_processors >= maxcpus) {
+ printk(KERN_WARNING "WARNING: maxcpus limit of %i reached."
+ " Processor ignored.\n", maxcpus);
+ return;
+ }
+
num_processors++;
cpus_complement(tmp_map, cpu_present_map);
cpu = first_cpu(tmp_map);