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Diffstat (limited to 'arch/x86/include/asm/i387.h')
-rw-r--r--arch/x86/include/asm/i387.h9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h
index f704be239883..1e12c2d087e4 100644
--- a/arch/x86/include/asm/i387.h
+++ b/arch/x86/include/asm/i387.h
@@ -259,7 +259,6 @@ static inline void fpu_save_init(struct fpu *fpu)
259static inline void __save_init_fpu(struct task_struct *tsk) 259static inline void __save_init_fpu(struct task_struct *tsk)
260{ 260{
261 fpu_save_init(&tsk->thread.fpu); 261 fpu_save_init(&tsk->thread.fpu);
262 task_thread_info(tsk)->status &= ~TS_USEDFPU;
263} 262}
264 263
265static inline int fpu_fxrstor_checking(struct fpu *fpu) 264static inline int fpu_fxrstor_checking(struct fpu *fpu)
@@ -290,6 +289,7 @@ static inline void __unlazy_fpu(struct task_struct *tsk)
290{ 289{
291 if (task_thread_info(tsk)->status & TS_USEDFPU) { 290 if (task_thread_info(tsk)->status & TS_USEDFPU) {
292 __save_init_fpu(tsk); 291 __save_init_fpu(tsk);
292 task_thread_info(tsk)->status &= ~TS_USEDFPU;
293 stts(); 293 stts();
294 } else 294 } else
295 tsk->fpu_counter = 0; 295 tsk->fpu_counter = 0;
@@ -356,9 +356,11 @@ static inline void kernel_fpu_begin(void)
356 356
357 WARN_ON_ONCE(!irq_fpu_usable()); 357 WARN_ON_ONCE(!irq_fpu_usable());
358 preempt_disable(); 358 preempt_disable();
359 if (me->status & TS_USEDFPU) 359 if (me->status & TS_USEDFPU) {
360 __save_init_fpu(me->task); 360 __save_init_fpu(me->task);
361 else 361 me->status &= ~TS_USEDFPU;
362 /* We do 'stts()' in kernel_fpu_end() */
363 } else
362 clts(); 364 clts();
363} 365}
364 366
@@ -449,6 +451,7 @@ static inline void save_init_fpu(struct task_struct *tsk)
449 WARN_ON_ONCE(!(task_thread_info(tsk)->status & TS_USEDFPU)); 451 WARN_ON_ONCE(!(task_thread_info(tsk)->status & TS_USEDFPU));
450 preempt_disable(); 452 preempt_disable();
451 __save_init_fpu(tsk); 453 __save_init_fpu(tsk);
454 task_thread_info(tsk)->status &= ~TS_USEDFPU;
452 stts(); 455 stts();
453 preempt_enable(); 456 preempt_enable();
454} 457}