[1/2] x86: apic unification - merge down lapic_get_maxlvt
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Message ID 488866bf.1636440a.2c8e.ffffa160@mx.google.com
State New, archived
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  • [1/2] x86: apic unification - merge down lapic_get_maxlvt
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Commit Message

Cyrill Gorcunov Jan. 1, 1970, midnight UTC 
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
---

No code change on binary level.

Patch
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Index: linux-2.6.git/arch/x86/kernel/apic_32.c
===================================================================
--- linux-2.6.git.orig/arch/x86/kernel/apic_32.c	2008-07-24 13:40:58.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/apic_32.c	2008-07-24 13:48:52.000000000 +0400
@@ -226,9 +226,13 @@  int get_physical_broadcast(void)
  */
 int lapic_get_maxlvt(void)
 {
-	unsigned int v = apic_read(APIC_LVR);
+	unsigned int v;
 
-	/* 82489DXs do not report # of LVT entries. */
+	v = apic_read(APIC_LVR);
+	/*
+	 * - we always have APIC integrated on 64bit mode
+	 * - 82489DXs do not report # of LVT entries
+	 */
 	return APIC_INTEGRATED(GET_APIC_VERSION(v)) ? GET_APIC_MAXLVT(v) : 2;
 }
 
Index: linux-2.6.git/arch/x86/kernel/apic_64.c
===================================================================
--- linux-2.6.git.orig/arch/x86/kernel/apic_64.c	2008-07-24 13:40:58.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/apic_64.c	2008-07-24 13:48:38.000000000 +0400
@@ -228,11 +228,14 @@  void __cpuinit enable_NMI_through_LVT0(v
  */
 int lapic_get_maxlvt(void)
 {
-	unsigned int v, maxlvt;
+	unsigned int v;
 
 	v = apic_read(APIC_LVR);
-	maxlvt = GET_APIC_MAXLVT(v);
-	return maxlvt;
+	/*
+	 * - we always have APIC integrated on 64bit mode
+	 * - 82489DXs do not report # of LVT entries
+	 */
+	return APIC_INTEGRATED(GET_APIC_VERSION(v)) ? GET_APIC_MAXLVT(v) : 2;
 }
 
 /*