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x86/fpu: Use 'struct fpu' in fpu_reset_state()
Migrate this function to pure 'struct fpu' usage. Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -380,10 +380,8 @@ static inline void restore_init_xstate(void)
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* Reset the FPU state in the eager case and drop it in the lazy case (later use
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* will reinit it).
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*/
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static inline void fpu_reset_state(struct task_struct *tsk)
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static inline void fpu_reset_state(struct fpu *fpu)
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{
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struct fpu *fpu = &tsk->thread.fpu;
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if (!use_eager_fpu())
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drop_fpu(fpu);
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else
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@ -460,7 +458,7 @@ static inline void switch_fpu_finish(struct task_struct *new, fpu_switch_t fpu)
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if (fpu.preload) {
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if (unlikely(restore_fpu_checking(new_fpu)))
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fpu_reset_state(new);
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fpu_reset_state(new_fpu);
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}
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}
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@ -112,12 +112,11 @@ EXPORT_SYMBOL(__kernel_fpu_begin);
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void __kernel_fpu_end(void)
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{
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struct task_struct *me = current;
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struct fpu *fpu = &me->thread.fpu;
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struct fpu *fpu = ¤t->thread.fpu;
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if (fpu->has_fpu) {
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if (WARN_ON(restore_fpu_checking(fpu)))
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fpu_reset_state(me);
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fpu_reset_state(fpu);
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} else if (!use_eager_fpu()) {
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stts();
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}
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@ -371,7 +370,7 @@ void fpu__restore(void)
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kernel_fpu_disable();
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__thread_fpu_begin(fpu);
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if (unlikely(restore_fpu_checking(fpu))) {
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fpu_reset_state(tsk);
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fpu_reset_state(fpu);
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force_sig_info(SIGSEGV, SEND_SIG_PRIV, tsk);
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} else {
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tsk->thread.fpu.counter++;
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@ -343,7 +343,7 @@ int __restore_xstate_sig(void __user *buf, void __user *buf_fx, int size)
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config_enabled(CONFIG_IA32_EMULATION));
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if (!buf) {
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fpu_reset_state(tsk);
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fpu_reset_state(fpu);
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return 0;
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}
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@ -417,7 +417,7 @@ int __restore_xstate_sig(void __user *buf, void __user *buf_fx, int size)
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*/
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user_fpu_begin();
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if (restore_user_xstate(buf_fx, xstate_bv, fx_only)) {
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fpu_reset_state(tsk);
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fpu_reset_state(fpu);
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return -1;
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}
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}
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@ -667,7 +667,7 @@ handle_signal(struct ksignal *ksig, struct pt_regs *regs)
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* Ensure the signal handler starts with the new fpu state.
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*/
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if (fpu->fpstate_active)
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fpu_reset_state(current);
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fpu_reset_state(fpu);
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}
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signal_setup_done(failed, ksig, stepping);
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}
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