Here's a simpler patch that fixes the boot hang ..

We have to call off the IPI looping regardless of the check_nmi_watchdog
outcome..

Signed-off-by: Daniel Walker <[EMAIL PROTECTED]>

Index: linux-2.6.22/arch/i386/kernel/nmi.c
===================================================================
--- linux-2.6.22.orig/arch/i386/kernel/nmi.c    2007-08-15 00:51:12.000000000 
+0000
+++ linux-2.6.22/arch/i386/kernel/nmi.c 2007-08-28 20:27:56.000000000 +0000
@@ -122,12 +122,12 @@ static int __init check_nmi_watchdog(voi
                        atomic_dec(&nmi_active);
                }
        }
+       endflag = 1;
        if (!atomic_read(&nmi_active)) {
                kfree(prev_nmi_count);
                atomic_set(&nmi_active, -1);
                return -1;
        }
-       endflag = 1;
        printk("OK.\n");
 
        /* now that we know it works we can reduce NMI frequency to




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