x86/tlb: Don't use locked operations in tlbflush_filter()

All passed cpumask_t's are context-local and not at risk of concurrent
updates.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/include/asm-x86/flushtlb.h b/xen/include/asm-x86/flushtlb.h
index 8b7adef7c59f3532c0e50f546c049849fa7e00ea..aa86ea2f3e36b233424454af21ca365fe3eb92f2 100644 (file)
--- a/xen/include/asm-x86/flushtlb.h
+++ b/xen/include/asm-x86/flushtlb.h
@@ -55,7 +55,7 @@ static inline void tlbflush_filter(cpumask_t *mask, uint32_t page_timestamp)
 
     for_each_cpu ( cpu, mask )
         if ( !NEED_FLUSH(per_cpu(tlbflush_time, cpu), page_timestamp) )
-            cpumask_clear_cpu(cpu, mask);
+            __cpumask_clear_cpu(cpu, mask);
 }
 
 void new_tlbflush_clock_period(void);