[PATCH] add and handle NMI_VECTOR

[Jan Beulich]

(Note: Patch also attached because the inline version is certain to get
line wrapped.)

Declare NMI_VECTOR and handle it in the IPI sending code.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

diff -Npru 2.6.13/include/asm-x86_64/hw_irq.h
2.6.13-x86_64-nmi-ipi/include/asm-x86_64/hw_irq.h
--- 2.6.13/include/asm-x86_64/hw_irq.h	2005-08-29 01:41:01.000000000
+0200
+++ 2.6.13-x86_64-nmi-ipi/include/asm-x86_64/hw_irq.h	2005-03-16
12:24:42.000000000 +0100
@@ -26,6 +26,7 @@
 struct hw_interrupt_type;
 #endif
 
+#define NMI_VECTOR		0x02
 /*
  * IDT vectors usable for external interrupt sources start
  * at 0x20:
diff -Npru 2.6.13/include/asm-x86_64/ipi.h
2.6.13-x86_64-nmi-ipi/include/asm-x86_64/ipi.h
--- 2.6.13/include/asm-x86_64/ipi.h	2005-08-29 01:41:01.000000000
+0200
+++ 2.6.13-x86_64-nmi-ipi/include/asm-x86_64/ipi.h	2005-09-01
11:32:12.000000000 +0200
@@ -31,9 +31,20 @@
 
 static inline unsigned int __prepare_ICR (unsigned int shortcut, int
vector, unsigned int dest)
 {
-	unsigned int icr =  APIC_DM_FIXED | shortcut | vector | dest;
-	if (vector == KDB_VECTOR)
-		icr = (icr & (~APIC_VECTOR_MASK)) | APIC_DM_NMI;
+	unsigned int icr = shortcut | dest;
+
+	switch (vector) {
+	default:
+		icr |= APIC_DM_FIXED | vector;
+		break;
+	case NMI_VECTOR:
+		/*
+		 * Setup KDB IPI to be delivered as an NMI
+		 */
+	case KDB_VECTOR:
+		icr |= APIC_DM_NMI;
+		break;
+	}
 	return icr;
 }

Attachment: linux-2.6.13-x86_64-nmi-ipi.patch
Description: Binary data