NUMA-Q breakage 7/7 preempt vs. printk bootstrap ordering

[William Lee Irwin III]

CONFIG_PREEMPT creates a bootstrap ordering issue as some implicit
scheduling done in printk.c raises exceptions prior to the secondary
cpus being prepared to handle them (seen as no vm86_info: BAD).

The workaround, enclosed below is not to use preempt on NUMA-Q.

Cheers,
Bill

===== arch/i386/config.in 1.40 vs edited =====
--- 1.40/arch/i386/config.in	Mon Jun 17 07:03:16 2002
+++ edited/arch/i386/config.in	Fri Jul 12 01:12:25 2002
@@ -165,7 +165,9 @@
       define_bool CONFIG_X86_IO_APIC y
    fi
 else
-   bool 'Multiquad NUMA system' CONFIG_MULTIQUAD
+   if [ "$CONFIG_PREEMPT" != "y" ]; then
+      bool 'Multiquad NUMA system' CONFIG_MULTIQUAD
+   fi
 fi
 
 bool 'Machine Check Exception' CONFIG_X86_MCE