patch-2_6_7-vs1_9_1_12

[linux-2.6.git] / arch / ia64 / kernel / sal.c

diff --git a/arch/ia64/kernel/sal.c b/arch/ia64/kernel/sal.c
index e009747..82a9b89 100644 (file)
--- a/arch/ia64/kernel/sal.c
+++ b/arch/ia64/kernel/sal.c
@@ -122,10 +122,23 @@ sal_desc_entry_point (void *p)
 static void __init
 set_smp_redirect (int flag)
 {
+#ifndef CONFIG_HOTPLUG_CPU
        if (no_int_routing)
                smp_int_redirect &= ~flag;
        else
                smp_int_redirect |= flag;
+#else
+       /*
+        * For CPU Hotplug we dont want to do any chipset supported
+        * interrupt redirection. The reason is this would require that
+        * All interrupts be stopped and hard bind the irq to a cpu.
+        * Later when the interrupt is fired we need to set the redir hint
+        * on again in the vector. This is combersome for something that the
+        * user mode irq balancer will solve anyways.
+        */
+       no_int_routing=1;
+       smp_int_redirect &= ~flag;
+#endif
 }
 #else
 #define set_smp_redirect(flag) do { } while (0)