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Diffstat (limited to 'arch/ia64/mm/tlb.c')
-rw-r--r--arch/ia64/mm/tlb.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c
index 6a4eec9113e8..4dbbca0b5e9c 100644
--- a/arch/ia64/mm/tlb.c
+++ b/arch/ia64/mm/tlb.c
@@ -156,17 +156,19 @@ flush_tlb_range (struct vm_area_struct *vma, unsigned long start,
nbits = purge.max_bits;
start &= ~((1UL << nbits) - 1);
-# ifdef CONFIG_SMP
- platform_global_tlb_purge(mm, start, end, nbits);
-# else
preempt_disable();
+#ifdef CONFIG_SMP
+ if (mm != current->active_mm || cpus_weight(mm->cpu_vm_mask) != 1) {
+ platform_global_tlb_purge(mm, start, end, nbits);
+ preempt_enable();
+ return;
+ }
+#endif
do {
ia64_ptcl(start, (nbits<<2));
start += (1UL << nbits);
} while (start < end);
preempt_enable();
-# endif
-
ia64_srlz_i(); /* srlz.i implies srlz.d */
}
EXPORT_SYMBOL(flush_tlb_range);