x86/Intel: quiesce revised CPUID level message

Print this only once, for the boot CPU, unless "cpuinfo" was specified.
I found this particularly annoying on a machine which also didn't have
it MTRRs consistently set up across cores, resulting in the printing of
those messages being awfully slow (and with a second per-CPU message
added for debugging purposes this even lead to timeouts during AP
bringup).

Signed-off-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/arch/x86/cpu/intel.c b/xen/arch/x86/cpu/intel.c
index 47f8b595e283909ef81339030e3a47bb1bc62995..a0d47e6f4d1dc0c1aa0f3e8fe2bdb610ac21e246 100644 (file)
--- a/xen/arch/x86/cpu/intel.c
+++ b/xen/arch/x86/cpu/intel.c
@@ -139,7 +139,9 @@ void __devinit early_intel_workaround(struct cpuinfo_x86 *c)
                        misc_enable &= ~MSR_IA32_MISC_ENABLE_LIMIT_CPUID;
                        wrmsrl(MSR_IA32_MISC_ENABLE, misc_enable);
                        c->cpuid_level = cpuid_eax(0);
-                       printk("revised cpuid_level = %d\n", c->cpuid_level);
+                       if (opt_cpu_info || c == &boot_cpu_data)
+                               printk(KERN_INFO "revised cpuid level: %d\n",
+                                      c->cpuid_level);
                }
        }
 }