X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-s390%2Ftlbflush.h;h=d60394b9745ef60387ad385013f18f23d622980c;hb=4b1fefaca9f5fdd43b24aa248777a75a81dfa8d6;hp=70fa5ae581801b8a112edc0f71dfc9c9770ed83b;hpb=c64768a7d671bcde80bca2aed93f9e07edc069c3;p=linux-2.6

diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h
index 70fa5ae581..d60394b974 100644
--- a/include/asm-s390/tlbflush.h
+++ b/include/asm-s390/tlbflush.h
@@ -2,6 +2,7 @@
 #define _S390_TLBFLUSH_H
 
 #include <linux/mm.h>
+#include <linux/sched.h>
 #include <asm/processor.h>
 #include <asm/pgalloc.h>
 
@@ -13,12 +14,14 @@ static inline void __tlb_flush_local(void)
 	asm volatile("ptlb" : : : "memory");
 }
 
+#ifdef CONFIG_SMP
 /*
  * Flush all tlb entries on all cpus.
  */
+void smp_ptlb_all(void);
+
 static inline void __tlb_flush_global(void)
 {
-	extern void smp_ptlb_all(void);
 	register unsigned long reg2 asm("2");
 	register unsigned long reg3 asm("3");
 	register unsigned long reg4 asm("4");
@@ -39,6 +42,25 @@ static inline void __tlb_flush_global(void)
 		: : "d" (reg2), "d" (reg3), "d" (reg4), "m" (dummy) : "cc" );
 }
 
+static inline void __tlb_flush_full(struct mm_struct *mm)
+{
+	cpumask_t local_cpumask;
+
+	preempt_disable();
+	/*
+	 * If the process only ran on the local cpu, do a local flush.
+	 */
+	local_cpumask = cpumask_of_cpu(smp_processor_id());
+	if (cpus_equal(mm->cpu_vm_mask, local_cpumask))
+		__tlb_flush_local();
+	else
+		__tlb_flush_global();
+	preempt_enable();
+}
+#else
+#define __tlb_flush_full(mm)	__tlb_flush_local()
+#endif
+
 /*
  * Flush all tlb entries of a page table on all cpus.
  */
@@ -51,8 +73,6 @@ static inline void __tlb_flush_idte(unsigned long asce)
 
 static inline void __tlb_flush_mm(struct mm_struct * mm)
 {
-	cpumask_t local_cpumask;
-
 	if (unlikely(cpus_empty(mm->cpu_vm_mask)))
 		return;
 	/*
@@ -61,23 +81,15 @@ static inline void __tlb_flush_mm(struct mm_struct * mm)
 	 * only ran on the local cpu.
 	 */
 	if (MACHINE_HAS_IDTE) {
-		pgd_t *shadow = get_shadow_table(mm->pgd);
-
-		if (shadow)
-			__tlb_flush_idte((unsigned long) shadow | mm->context);
-		__tlb_flush_idte((unsigned long) mm->pgd | mm->context);
+		if (mm->context.noexec)
+			__tlb_flush_idte((unsigned long)
+					 get_shadow_table(mm->pgd) |
+					 mm->context.asce_bits);
+		__tlb_flush_idte((unsigned long) mm->pgd |
+				 mm->context.asce_bits);
 		return;
 	}
-	preempt_disable();
-	/*
-	 * If the process only ran on the local cpu, do a local flush.
-	 */
-	local_cpumask = cpumask_of_cpu(smp_processor_id());
-	if (cpus_equal(mm->cpu_vm_mask, local_cpumask))
-		__tlb_flush_local();
-	else
-		__tlb_flush_global();
-	preempt_enable();
+	__tlb_flush_full(mm);
 }
 
 static inline void __tlb_flush_mm_cond(struct mm_struct * mm)