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Diffstat (limited to 'arch/x86/kernel/xsave.c')
-rw-r--r--arch/x86/kernel/xsave.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index a391134..7110911 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -47,7 +47,7 @@ void __sanitize_i387_state(struct task_struct *tsk)
if (!fx)
return;
- BUG_ON(task_thread_info(tsk)->status & TS_USEDFPU);
+ BUG_ON(__thread_has_fpu(tsk));
xstate_bv = tsk->thread.fpu.state->xsave.xsave_hdr.xstate_bv;
@@ -168,7 +168,7 @@ int save_i387_xstate(void __user *buf)
if (!used_math())
return 0;
- if (task_thread_info(tsk)->status & TS_USEDFPU) {
+ if (user_has_fpu()) {
if (use_xsave())
err = xsave_user(buf);
else
@@ -176,8 +176,7 @@ int save_i387_xstate(void __user *buf)
if (err)
return err;
- task_thread_info(tsk)->status &= ~TS_USEDFPU;
- stts();
+ user_fpu_end();
} else {
sanitize_i387_state(tsk);
if (__copy_to_user(buf, &tsk->thread.fpu.state->fxsave,
@@ -292,10 +291,7 @@ int restore_i387_xstate(void __user *buf)
return err;
}
- if (!(task_thread_info(current)->status & TS_USEDFPU)) {
- clts();
- task_thread_info(current)->status |= TS_USEDFPU;
- }
+ user_fpu_begin();
if (use_xsave())
err = restore_user_xstate(buf);
else
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