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    Subject[PATCH] x86_64: fix IRQ vector reservations
    It looks like the new scalable TLB flush code for x86_64 is claiming
    one more IRQ vector than it actually uses.

    Signed-off-by: Jason Uhlenkott <jasonuhl@sgi.com>


    Index: linux/include/asm-x86_64/hw_irq.h
    ===================================================================
    --- linux.orig/include/asm-x86_64/hw_irq.h 2006-01-02 19:21:10.000000000 -0800
    +++ linux/include/asm-x86_64/hw_irq.h 2006-01-03 15:18:36.923399691 -0800
    @@ -46,8 +46,6 @@
    * some of the following vectors are 'rare', they are merged
    * into a single vector (CALL_FUNCTION_VECTOR) to save vector space.
    * TLB, reschedule and local APIC vectors are performance-critical.
    - *
    - * Vectors 0xf0-0xf9 are free (reserved for future Linux use).
    */
    #define SPURIOUS_APIC_VECTOR 0xff
    #define ERROR_APIC_VECTOR 0xfe
    @@ -56,8 +54,8 @@
    #define KDB_VECTOR 0xfb /* reserved for KDB */
    #define THERMAL_APIC_VECTOR 0xfa
    #define THRESHOLD_APIC_VECTOR 0xf9
    -#define INVALIDATE_TLB_VECTOR_END 0xf8
    -#define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f8 used for TLB flush */
    +#define INVALIDATE_TLB_VECTOR_END 0xf7
    +#define INVALIDATE_TLB_VECTOR_START 0xf0 /* f0-f7 used for TLB flush */

    #define NUM_INVALIDATE_TLB_VECTORS 8

    -
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