---

yaml --- r: 4898 b: refs/heads/master c: 8ed1383 h: refs/heads/master v: v3
git-mirror · Jul 22, 2005 · 152ac24 · 152ac24
1 parent 790e0d9
commit 152ac24
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Showing 3 changed files with 13 additions and 13 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b339a18b81a1f6ca1455559594f5df872b9e59f4
+refs/heads/master: 8ed1383fb7b6685968588141d5934e0e6715e954
diff --git a/trunk/arch/i386/kernel/i387.c b/trunk/arch/i386/kernel/i387.c
@@ -82,17 +82,6 @@ void kernel_fpu_begin(void)
 }
 EXPORT_SYMBOL_GPL(kernel_fpu_begin);
 
-void restore_fpu( struct task_struct *tsk )
-{
-	if ( cpu_has_fxsr ) {
-		asm volatile( "fxrstor %0"
-			      : : "m" (tsk->thread.i387.fxsave) );
-	} else {
-		asm volatile( "frstor %0"
-			      : : "m" (tsk->thread.i387.fsave) );
-	}
-}
-
 /*
  * FPU tag word conversions.
  */

diff --git a/trunk/include/asm-i386/i387.h b/trunk/include/asm-i386/i387.h
@@ -19,10 +19,21 @@
 
 extern void mxcsr_feature_mask_init(void);
 extern void init_fpu(struct task_struct *);
+
 /*
  * FPU lazy state save handling...
  */
-extern void restore_fpu( struct task_struct *tsk );
+
+/*
+ * The "nop" is needed to make the instructions the same
+ * length.
+ */
+#define restore_fpu(tsk)			\
+	alternative_input(			\
+		"nop ; frstor %1",		\
+		"fxrstor %1",			\
+		X86_FEATURE_FXSR,		\
+		"m" ((tsk)->thread.i387.fsave))
 
 extern void kernel_fpu_begin(void);
 #define kernel_fpu_end() do { stts(); preempt_enable(); } while(0)