From 60f6e65d7887c257392313755f95540ef5e7ea89 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Mon, 17 Jan 2011 10:52:02 +0800 Subject: [PATCH] x86: Cleanup vector usage Cleanup the vector usage and make them continuous if possible. Signed-off-by: Shaohua Li Cc: Andi Kleen Cc: Eric Dumazet LKML-Reference: <1295232722.1949.707.camel@sli10-conroe> Signed-off-by: Ingo Molnar --- arch/x86/include/asm/irq_vectors.h | 52 ++++++++++++++++-------------- 1 file changed, 27 insertions(+), 25 deletions(-) diff --git a/arch/x86/include/asm/irq_vectors.h b/arch/x86/include/asm/irq_vectors.h index 6af0894dafb4..42f0d4a30f1b 100644 --- a/arch/x86/include/asm/irq_vectors.h +++ b/arch/x86/include/asm/irq_vectors.h @@ -1,6 +1,7 @@ #ifndef _ASM_X86_IRQ_VECTORS_H #define _ASM_X86_IRQ_VECTORS_H +#include /* * 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. * @@ -96,10 +97,25 @@ #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 +/* + * Generic system vector for platform specific use + */ +#define X86_PLATFORM_IPI_VECTOR 0xf7 + +/* + * IRQ work vector: + */ +#define IRQ_WORK_VECTOR 0xf6 + +#define UV_BAU_MESSAGE 0xf5 + +/* + * Self IPI vector for machine checks + */ +#define MCE_SELF_VECTOR 0xf4 + +/* Xen vector callback to receive events in a HVM domain */ +#define XEN_HVM_EVTCHN_CALLBACK 0xf3 /* * Local APIC timer IRQ vector is on a different priority level, @@ -108,25 +124,11 @@ */ #define LOCAL_TIMER_VECTOR 0xef -/* - * Generic system vector for platform specific use - */ -#define X86_PLATFORM_IPI_VECTOR 0xed - -/* - * IRQ work vector: - */ -#define IRQ_WORK_VECTOR 0xec - -#define UV_BAU_MESSAGE 0xea - -/* - * Self IPI vector for machine checks - */ -#define MCE_SELF_VECTOR 0xeb - -/* Xen vector callback to receive events in a HVM domain */ -#define XEN_HVM_EVTCHN_CALLBACK 0xe9 +/* 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