/*
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* SPDX-License-Identifier: GPL-2.0
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*
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* Copyright (C) 2019 Philippe Gerum.
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*/
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#ifndef _ASM_X86_DOVETAIL_H
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#define _ASM_X86_DOVETAIL_H
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#if !defined(__ASSEMBLY__) && defined(CONFIG_DOVETAIL)
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#include <asm/fpu/api.h>
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#include <asm/io_bitmap.h>
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static inline void arch_dovetail_exec_prepare(void)
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{
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clear_thread_flag(TIF_NEED_FPU_LOAD);
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}
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static inline
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void arch_dovetail_switch_prepare(bool leave_inband)
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{
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if (leave_inband)
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fpu__suspend_inband();
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}
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static inline
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void arch_dovetail_switch_finish(bool enter_inband)
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{
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unsigned int ti_work = READ_ONCE(current_thread_info()->flags);
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if (unlikely(ti_work & _TIF_IO_BITMAP))
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tss_update_io_bitmap();
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if (enter_inband) {
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fpu__resume_inband();
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} else {
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if (unlikely(ti_work & _TIF_NEED_FPU_LOAD &&
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!(current->flags & PF_KTHREAD)))
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switch_fpu_return();
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}
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}
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#endif
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#endif /* _ASM_X86_DOVETAIL_H */
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