x86/apic: Nuke another processor check

The boot CPUs local APIC is now always registered, so there is no point to
have another unreadable validatation for it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index fc2173b..da795f7 100644 (file)
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1181,23 +1181,6 @@ static void __init smp_sanity_check(void)
                set_nr_cpu_ids(8);
        }
 #endif
-
-       if (!physid_isset(read_apic_id(), phys_cpu_present_map)) {
-               pr_warn("weird, boot CPU (#%d) not listed by the BIOS\n",
-                       read_apic_id());
-
-               physid_set(read_apic_id(), phys_cpu_present_map);
-       }
-
-       /*
-        * Should not be necessary because the MP table should list the boot
-        * CPU too, but we do it for the sake of robustness anyway.
-        */
-       if (!apic->check_phys_apicid_present(boot_cpu_physical_apicid)) {
-               pr_notice("weird, boot CPU (#%d) not listed by the BIOS\n",
-                         boot_cpu_physical_apicid);
-               physid_set(read_apic_id(), phys_cpu_present_map);
-       }
        preempt_enable();
 }