diff -Naurp -X /home/jbarnes/dontdiff 230-tlb-global-flush-fix.patch/kernel/sched.c 240-node-history-migration.patch/kernel/sched.c
--- 230-tlb-global-flush-fix.patch/kernel/sched.c	Thu Jan 29 10:18:58 2004
+++ 240-node-history-migration.patch/kernel/sched.c	Thu Jan 29 10:34:39 2004
@@ -25,6 +25,7 @@
 #include <linux/highmem.h>
 #include <linux/smp_lock.h>
 #include <asm/mmu_context.h>
+#include <asm/tlbflush.h>
 #include <linux/interrupt.h>
 #include <linux/completion.h>
 #include <linux/kernel_stat.h>
@@ -1154,6 +1155,14 @@ static void sched_migrate_task(task_t *p
 		wake_up_process(rq->migration_thread);
 		wait_for_completion(&req.done);
 
+		/*
+		 * we want a new context here. This eliminates TLB
+		 * flushes on the cpus where the process executed prior to
+		 * the migration.
+		 */
+		if (p == current)
+			flush_tlb_mm(current->mm);
+
 		/* If we raced with sys_sched_setaffinity, don't
 		 * restore mask. */
 		rq = task_rq_lock(p, &flags);