[PATCH] x86_64: Don't claim too many vectors for TLB flushing

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>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/include/asm-x86_64/hw_irq.h b/include/asm-x86_64/hw_irq.h
index c14a8c7..b248930 100644 (file)
--- a/include/asm-x86_64/hw_irq.h
+++ b/include/asm-x86_64/hw_irq.h
@@ -46,8 +46,6 @@ struct hw_interrupt_type;
  *  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 +54,9 @@ struct hw_interrupt_type;
 #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 */
+/* f8 free */
+#define INVALIDATE_TLB_VECTOR_END      0xf7
+#define INVALIDATE_TLB_VECTOR_START    0xf0    /* f0-f7 used for TLB flush */
 
 #define NUM_INVALIDATE_TLB_VECTORS     8