From 28ddb9e9db2917f76e182ea127bbc550a4fafbbb Mon Sep 17 00:00:00 2001
From: Vivek Goyal <vgoyal@in.ibm.com>
Date: Sat, 20 May 2006 15:00:21 -0700
Subject: [PATCH] --- yaml --- r: 26869 b: refs/heads/master c:
 be0d03f1c3d3612fe2b6aa451ae87a89382c9231 h: refs/heads/master i:   26867:
 21c8af8977cf4f43eeb1f57a010628ad9b2b65bd v: v3

---
 [refs]                        | 2 +-
 trunk/arch/i386/kernel/apic.c | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 78c838035154..4356a7c36640 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5daa3ba0c6a41a8bb4ba17ad8d5514172e103504
+refs/heads/master: be0d03f1c3d3612fe2b6aa451ae87a89382c9231
diff --git a/trunk/arch/i386/kernel/apic.c b/trunk/arch/i386/kernel/apic.c
index 013b85df18c6..3d4b2f3d116a 100644
--- a/trunk/arch/i386/kernel/apic.c
+++ b/trunk/arch/i386/kernel/apic.c
@@ -1341,6 +1341,14 @@ int __init APIC_init_uniprocessor (void)
 
 	connect_bsp_APIC();
 
+	/*
+	 * Hack: In case of kdump, after a crash, kernel might be booting
+	 * on a cpu with non-zero lapic id. But boot_cpu_physical_apicid
+	 * might be zero if read from MP tables. Get it from LAPIC.
+	 */
+#ifdef CONFIG_CRASH_DUMP
+	boot_cpu_physical_apicid = GET_APIC_ID(apic_read(APIC_ID));
+#endif
 	phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid);
 
 	setup_local_APIC();