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Commit 60f6e65d authored by Shaohua Li's avatar Shaohua Li Committed by Ingo Molnar
Browse files

x86: Cleanup vector usage 



Cleanup the vector usage and make them continuous if possible.

Signed-off-by: default avatarShaohua Li <shaohua.li@intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
LKML-Reference: <1295232722.1949.707.camel@sli10-conroe>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 795abaf1

arch/x86/include/asm/irq_vectors.h

+21 −19
Original line number Diff line number Diff line 
#ifndef _ASM_X86_IRQ_VECTORS_H

#define _ASM_X86_IRQ_VECTORS_H



#include <linux/threads.h>

/*

 * Linux IRQ vector layout.

 *
@@ -16,8 +17,8 @@ 
 *  Vectors   0 ...  31 : system traps and exceptions - hardcoded events

 *  Vectors  32 ... 127 : device interrupts

 *  Vector  128         : legacy int80 syscall interface

 *  Vectors 129 ... 237 : device interrupts

 *  Vectors 238 ... 255 : special interrupts

 *  Vectors 129 ... 229 : device interrupts

 *  Vectors 230 ... 255 : special interrupts

 *

 * 64-bit x86 has per CPU IDT tables, 32-bit has one shared IDT table.

 *
@@ -96,37 +97,38 @@ 
#define THRESHOLD_APIC_VECTOR		0xf9

#define REBOOT_VECTOR			0xf8



/* f0-f7 used for spreading out TLB flushes: */

#define INVALIDATE_TLB_VECTOR_END	0xf7

#define INVALIDATE_TLB_VECTOR_START	0xf0

#define NUM_INVALIDATE_TLB_VECTORS	   8



/*

 * Local APIC timer IRQ vector is on a different priority level,

 * to work around the 'lost local interrupt if more than 2 IRQ

 * sources per level' errata.

 */

#define LOCAL_TIMER_VECTOR		0xef



/*

 * Generic system vector for platform specific use

 */

#define X86_PLATFORM_IPI_VECTOR		0xed

#define X86_PLATFORM_IPI_VECTOR		0xf7



/*

 * IRQ work vector:

 */

#define IRQ_WORK_VECTOR			0xec

#define IRQ_WORK_VECTOR			0xf6



#define UV_BAU_MESSAGE			0xea

#define UV_BAU_MESSAGE			0xf5



/*

 * Self IPI vector for machine checks

 */

#define MCE_SELF_VECTOR			0xeb

#define MCE_SELF_VECTOR			0xf4



/* Xen vector callback to receive events in a HVM domain */

#define XEN_HVM_EVTCHN_CALLBACK		0xe9

#define XEN_HVM_EVTCHN_CALLBACK		0xf3



/*

 * Local APIC timer IRQ vector is on a different priority level,

 * to work around the 'lost local interrupt if more than 2 IRQ

 * sources per level' errata.

 */

#define LOCAL_TIMER_VECTOR		0xef



/* f0-f7 used for spreading out TLB flushes: */

#define NUM_INVALIDATE_TLB_VECTORS	   8

#define INVALIDATE_TLB_VECTOR_END	0xee

#define INVALIDATE_TLB_VECTOR_START	\

	(INVALIDATE_TLB_VECTOR_END - NUM_INVALIDATE_TLB_VECTORS + 1)



#define NR_VECTORS			 256