From: Andi Kleen <ak@suse.de>
Date: Mon, 16 Jan 2006 00:56:54 +0000 (+0100)
Subject: [PATCH] x86_64: Increase NR_IRQ_VECTORS to 32 * NR_CPUS
X-Git-Tag: v2.6.16-rc1~88
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5580eceed2014135231acb3e6906accf97e10f3c;p=linux-2.6

[PATCH] x86_64: Increase NR_IRQ_VECTORS to 32 * NR_CPUS

This prevents running out of GSIs on large Unisys ES7000 machines.
Follows i386

Cc:  "Protasevich, Natalie" <Natalie.Protasevich@unisys.com>

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

diff --git a/include/asm-x86_64/irq.h b/include/asm-x86_64/irq.h
index fb724ba37a..9db5a1b4f7 100644
--- a/include/asm-x86_64/irq.h
+++ b/include/asm-x86_64/irq.h
@@ -36,7 +36,7 @@
 #define NR_IRQ_VECTORS NR_IRQS
 #else
 #define NR_IRQS 224
-#define NR_IRQ_VECTORS 1024
+#define NR_IRQ_VECTORS (32 * NR_CPUS)
 #endif
 
 static __inline__ int irq_canonicalize(int irq)