From: Cyrill Gorcunov <gorcunov@gmail.com>
Date: Mon, 18 Aug 2008 16:45:53 +0000 (+0400)
Subject: x86: apic - unify connect_bsp_APIC
X-Git-Tag: v2.6.28-rc1~711^2~1^2~12
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=36c9d6742897fa414f51c4e9d0f20ab4e6bf942c;p=linux-2.6-omap-h63xx.git

x86: apic - unify connect_bsp_APIC

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index d4efe86adc7..6d230e9d0a7 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -1387,6 +1387,7 @@ void smp_error_interrupt(struct pt_regs *regs)
  */
 void __init connect_bsp_APIC(void)
 {
+#ifdef CONFIG_X86_32
 	if (pic_mode) {
 		/*
 		 * Do not trust the local APIC being empty at bootup.
@@ -1401,6 +1402,7 @@ void __init connect_bsp_APIC(void)
 		outb(0x70, 0x22);
 		outb(0x01, 0x23);
 	}
+#endif
 	enable_apic_mode();
 }
 
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 48806546d49..5579e213b5d 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -1285,10 +1285,26 @@ asmlinkage void smp_error_interrupt(void)
 }
 
 /**
- *  * connect_bsp_APIC - attach the APIC to the interrupt system
- *   */
+ * connect_bsp_APIC - attach the APIC to the interrupt system
+ */
 void __init connect_bsp_APIC(void)
 {
+#ifdef CONFIG_X86_32
+	if (pic_mode) {
+		/*
+		 * Do not trust the local APIC being empty at bootup.
+		 */
+		clear_local_APIC();
+		/*
+		 * PIC mode, enable APIC mode in the IMCR, i.e.  connect BSP's
+		 * local APIC to INT and NMI lines.
+		 */
+		apic_printk(APIC_VERBOSE, "leaving PIC mode, "
+				"enabling APIC mode.\n");
+		outb(0x70, 0x22);
+		outb(0x01, 0x23);
+	}
+#endif
 	enable_apic_mode();
 }