From: Mike Travis <travis@sgi.com>
Date: Fri, 16 Jan 2009 23:58:13 +0000 (-0800)
Subject: x86: put trigger in to detect mismatched apic versions.
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cef30b3a84e1c7cbd49987d83c5863c001445842;p=linux-beck.git

x86: put trigger in to detect mismatched apic versions.

Fire off one message if two apic's discovered with different
apic versions.

Signed-off-by: Mike Travis <travis@sgi.com>
---

diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 0f830e4f5675..db0998641c58 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -1833,6 +1833,11 @@ void __cpuinit generic_processor_info(int apicid, int version)
 	num_processors++;
 	cpu = cpumask_next_zero(-1, cpu_present_mask);
 
+	if (version != apic_version[boot_cpu_physical_apicid])
+		WARN_ONCE(1,
+			"ACPI: apic version mismatch, bootcpu: %x cpu %d: %x\n",
+			apic_version[boot_cpu_physical_apicid], cpu, version);
+
 	physid_set(apicid, phys_cpu_present_map);
 	if (apicid == boot_cpu_physical_apicid) {
 		/*