---

yaml --- r: 80542 b: refs/heads/master c: cd8ddf1 h: refs/heads/master v: v3
git-mirror · Jan 30, 2008 · 173e394 · 173e394
1 parent 4dafbd0
commit 173e394
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Showing 2 changed files with 13 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: af1e6844d60057774910a2d08bd75b67d73ba7d5
+refs/heads/master: cd8ddf1a2800026dd58433333cce7a65cbc6c6d2
diff --git a/trunk/arch/x86/mm/pageattr.c b/trunk/arch/x86/mm/pageattr.c
@@ -25,12 +25,24 @@ within(unsigned long addr, unsigned long start, unsigned long end)
 /*
  * Flushing functions
  */
+
+
+/**
+ * clflush_cache_range - flush a cache range with clflush
+ * @addr:	virtual start address
+ * @size:	number of bytes to flush
+ *
+ * clflush is an unordered instruction which needs fencing with mfence
+ * to avoid ordering issues.
+ */
 void clflush_cache_range(void *addr, int size)
 {
 	int i;
 
+	mb();
 	for (i = 0; i < size; i += boot_cpu_data.x86_clflush_size)
 		clflush(addr+i);
+	mb();
 }
 
 static void __cpa_flush_all(void *arg)