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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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3ac23944de
Rather than flush the TLB entry when installing a new PTE to allow the fast TLB reload to re-fill the TLB, just refill the TLB entry when removing the old one. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
58 lines
2.0 KiB
C
58 lines
2.0 KiB
C
/*
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* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef _ASM_NIOS2_TLBFLUSH_H
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#define _ASM_NIOS2_TLBFLUSH_H
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struct mm_struct;
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/*
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* TLB flushing:
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*
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* - flush_tlb_all() flushes all processes TLB entries
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* - flush_tlb_mm(mm) flushes the specified mm context TLB entries
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* - flush_tlb_range(vma, start, end) flushes a range of pages
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* - flush_tlb_page(vma, address) flushes a page
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* - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
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* - flush_tlb_kernel_page(address) flushes a kernel page
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*
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* - reload_tlb_page(vma, address, pte) flushes the TLB for address like
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* flush_tlb_page, then replaces it with a TLB for pte.
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*/
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extern void flush_tlb_all(void);
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extern void flush_tlb_mm(struct mm_struct *mm);
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extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
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unsigned long end);
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extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
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static inline void flush_tlb_page(struct vm_area_struct *vma,
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unsigned long address)
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{
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flush_tlb_range(vma, address, address + PAGE_SIZE);
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}
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static inline void flush_tlb_kernel_page(unsigned long address)
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{
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flush_tlb_kernel_range(address, address + PAGE_SIZE);
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}
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extern void reload_tlb_page(struct vm_area_struct *vma, unsigned long addr,
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pte_t pte);
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#endif /* _ASM_NIOS2_TLBFLUSH_H */
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