commit 990b183e58cb513a62492b6218987750e106cbfb
author Cyrill Gorcunov <gorcunov@gmail.com> Mon Aug 18 20:45:51 2008 +0400
committer Ingo Molnar <mingo@elte.hu> Tue Aug 19 02:07:13 2008 +0200
tree b9d20863c9dba4bddb8a78a45a813120ed354d29
parent f1ee37891dab6014f6b0ec77b18bc07e2369a55f

x86: apic - unify disable_local_APIC

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

arch/x86/kernel/apic_32.c

diff --git a/arch/x86/kernel/apic_32.c b/arch/x86/kernel/apic_32.c
index 80db3e0..13c4b79 100644
--- a/arch/x86/kernel/apic_32.c
+++ b/arch/x86/kernel/apic_32.c
@@ -796,7 +796,7 @@
  */
 void disable_local_APIC(void)
 {
-	unsigned long value;
+	unsigned int value;
 
 	clear_local_APIC();
 
@@ -808,6 +808,7 @@
 	value &= ~APIC_SPIV_APIC_ENABLED;
 	apic_write(APIC_SPIV, value);
 
+#ifdef CONFIG_X86_32
 	/*
 	 * When LAPIC was disabled by the BIOS and enabled by the kernel,
 	 * restore the disabled state.
@@ -819,6 +820,7 @@
 		l &= ~MSR_IA32_APICBASE_ENABLE;
 		wrmsr(MSR_IA32_APICBASE, l, h);
 	}
+#endif
 }
 
 /*

arch/x86/kernel/apic_64.c

diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 46acb9b..4fb903b 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -691,6 +691,20 @@
 	value = apic_read(APIC_SPIV);
 	value &= ~APIC_SPIV_APIC_ENABLED;
 	apic_write(APIC_SPIV, value);
+
+#ifdef CONFIG_X86_32
+	/*
+	 * When LAPIC was disabled by the BIOS and enabled by the kernel,
+	 * restore the disabled state.
+	 */
+	if (enabled_via_apicbase) {
+		unsigned int l, h;
+
+		rdmsr(MSR_IA32_APICBASE, l, h);
+		l &= ~MSR_IA32_APICBASE_ENABLE;
+		wrmsr(MSR_IA32_APICBASE, l, h);
+	}
+#endif
 }
 
 void lapic_shutdown(void)