From 0c14f8f322e670f64b49502d7d2045b68aee21d1 Mon Sep 17 00:00:00 2001
From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Sat, 25 Jun 2005 14:57:41 -0700
Subject: [PATCH] --- yaml --- r: 3311 b: refs/heads/master c:
 9635b47d910223745258768418003580ef7dba17 h: refs/heads/master i:   3309:
 83d8f47fe05b527b5431200c260293d4c989388e   3307:
 d279e9d24399fde7b7fc1daa8c382e6c4d5a9fc4   3303:
 63aa9c14de217cecd556e2df5a17bea1e37aa1b7   3295:
 ff2490506aa8058cc67c5bf2bd372e0b38c863c2 v: v3

---
 [refs]                         |  2 +-
 trunk/arch/i386/kernel/apic.c  | 25 +++++--------------------
 trunk/arch/i386/kernel/setup.c | 11 +++++++++++
 trunk/include/asm-i386/apic.h  | 13 +++++++++++++
 4 files changed, 30 insertions(+), 21 deletions(-)

diff --git a/[refs] b/[refs]
index 4296f358500d..a4a481c597d1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8f43d03fe2c4962c11d8227ac9505e590bad758b
+refs/heads/master: 9635b47d910223745258768418003580ef7dba17
diff --git a/trunk/arch/i386/kernel/apic.c b/trunk/arch/i386/kernel/apic.c
index b905d7bb9a0d..cf45bed96d08 100644
--- a/trunk/arch/i386/kernel/apic.c
+++ b/trunk/arch/i386/kernel/apic.c
@@ -40,6 +40,11 @@
 
 #include "io_ports.h"
 
+/*
+ * Knob to control our willingness to enable the local APIC.
+ */
+int enable_local_apic __initdata = 0; /* -1=force-disable, +1=force-enable */
+
 /*
  * Debug level
  */
@@ -666,26 +671,6 @@ static void apic_pm_activate(void) { }
  * Original code written by Keir Fraser.
  */
 
-/*
- * Knob to control our willingness to enable the local APIC.
- */
-int enable_local_apic __initdata = 0; /* -1=force-disable, +1=force-enable */
-
-static int __init lapic_disable(char *str)
-{
-	enable_local_apic = -1;
-	clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
-	return 0;
-}
-__setup("nolapic", lapic_disable);
-
-static int __init lapic_enable(char *str)
-{
-	enable_local_apic = 1;
-	return 0;
-}
-__setup("lapic", lapic_enable);
-
 static int __init apic_set_verbosity(char *str)
 {
 	if (strcmp("debug", str) == 0)
diff --git a/trunk/arch/i386/kernel/setup.c b/trunk/arch/i386/kernel/setup.c
index cba67e4ba0af..f1ad9fdeaad8 100644
--- a/trunk/arch/i386/kernel/setup.c
+++ b/trunk/arch/i386/kernel/setup.c
@@ -44,6 +44,7 @@
 #include <linux/edd.h>
 #include <linux/nodemask.h>
 #include <video/edid.h>
+#include <asm/apic.h>
 #include <asm/e820.h>
 #include <asm/mpspec.h>
 #include <asm/setup.h>
@@ -835,6 +836,16 @@ static void __init parse_cmdline_early (char ** cmdline_p)
 #endif /* CONFIG_X86_LOCAL_APIC */
 #endif /* CONFIG_ACPI_BOOT */
 
+#ifdef CONFIG_X86_LOCAL_APIC
+		/* enable local APIC */
+		else if (!memcmp(from, "lapic", 5))
+			lapic_enable();
+
+		/* disable local APIC */
+		else if (!memcmp(from, "nolapic", 6))
+			lapic_disable();
+#endif /* CONFIG_X86_LOCAL_APIC */
+
 		/*
 		 * highmem=size forces highmem to be exactly 'size' bytes.
 		 * This works even on boxes that have no highmem otherwise.
diff --git a/trunk/include/asm-i386/apic.h b/trunk/include/asm-i386/apic.h
index a5810cf7b578..53268cd9306e 100644
--- a/trunk/include/asm-i386/apic.h
+++ b/trunk/include/asm-i386/apic.h
@@ -5,6 +5,7 @@
 #include <linux/pm.h>
 #include <asm/fixmap.h>
 #include <asm/apicdef.h>
+#include <asm/processor.h>
 #include <asm/system.h>
 
 #define Dprintk(x...)
@@ -16,8 +17,20 @@
 #define APIC_VERBOSE 1
 #define APIC_DEBUG   2
 
+extern int enable_local_apic;
 extern int apic_verbosity;
 
+static inline void lapic_disable(void)
+{
+	enable_local_apic = -1;
+	clear_bit(X86_FEATURE_APIC, boot_cpu_data.x86_capability);
+}
+
+static inline void lapic_enable(void)
+{
+	enable_local_apic = 1;
+}
+
 /*
  * Define the default level of output to be very little
  * This can be turned up by using apic=verbose for more