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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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2dccdf7076
Several architectures (arm, arm64, riscv and x86) define exactly the same __tlb_remove_table(), just introduce generic __tlb_remove_table() to eliminate these duplications. The s390 __tlb_remove_table() is nearly the same, so also make s390 __tlb_remove_table() version generic. Link: https://lkml.kernel.org/r/ea372633d94f4d3f9f56a7ec5994bf050bf77e39.1736317725.git.zhengqi.arch@bytedance.com Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com> Reviewed-by: Kevin Brodsky <kevin.brodsky@arm.com> Acked-by: Andreas Larsson <andreas@gaisler.com> [sparc] Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> [s390] Acked-by: Arnd Bergmann <arnd@arndb.de> [asm-generic] Cc: Alexandre Ghiti <alex@ghiti.fr> Cc: Alexandre Ghiti <alexghiti@rivosinc.com> Cc: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jann Horn <jannh@google.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com> Cc: Will Deacon <will@kernel.org> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* TLB shootdown specifics for powerpc
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*
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* Copyright (C) 2002 Anton Blanchard, IBM Corp.
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* Copyright (C) 2002 Paul Mackerras, IBM Corp.
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*/
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#ifndef _ASM_POWERPC_TLB_H
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#define _ASM_POWERPC_TLB_H
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#ifdef __KERNEL__
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#ifndef __powerpc64__
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#include <linux/pgtable.h>
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#endif
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#ifndef __powerpc64__
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#include <asm/page.h>
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#include <asm/mmu.h>
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#endif
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#include <linux/pagemap.h>
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static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
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unsigned long address);
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#define __tlb_remove_tlb_entry __tlb_remove_tlb_entry
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#define tlb_flush tlb_flush
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extern void tlb_flush(struct mmu_gather *tlb);
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/*
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* book3s:
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* Hash does not use the linux page-tables, so we can avoid
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* the TLB invalidate for page-table freeing, Radix otoh does use the
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* page-tables and needs the TLBI.
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*
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* nohash:
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* We still do TLB invalidate in the __pte_free_tlb routine before we
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* add the page table pages to mmu gather table batch.
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*/
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#define tlb_needs_table_invalidate() radix_enabled()
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#define __HAVE_ARCH_TLB_REMOVE_TABLE
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/* Get the generic bits... */
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#include <asm-generic/tlb.h>
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static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
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unsigned long address)
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{
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#ifdef CONFIG_PPC_BOOK3S_32
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if (pte_val(*ptep) & _PAGE_HASHPTE)
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flush_hash_entry(tlb->mm, ptep, address);
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#endif
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}
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#ifdef CONFIG_SMP
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static inline int mm_is_core_local(struct mm_struct *mm)
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{
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return cpumask_subset(mm_cpumask(mm),
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topology_sibling_cpumask(smp_processor_id()));
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}
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#ifdef CONFIG_PPC_BOOK3S_64
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static inline int mm_is_thread_local(struct mm_struct *mm)
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{
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if (atomic_read(&mm->context.active_cpus) > 1)
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return false;
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return cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm));
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}
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#else /* CONFIG_PPC_BOOK3S_64 */
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static inline int mm_is_thread_local(struct mm_struct *mm)
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{
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return cpumask_equal(mm_cpumask(mm),
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cpumask_of(smp_processor_id()));
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}
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#endif /* !CONFIG_PPC_BOOK3S_64 */
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#else /* CONFIG_SMP */
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static inline int mm_is_core_local(struct mm_struct *mm)
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{
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return 1;
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}
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static inline int mm_is_thread_local(struct mm_struct *mm)
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{
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return 1;
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}
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#endif
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#define arch_supports_page_table_move arch_supports_page_table_move
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static inline bool arch_supports_page_table_move(void)
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{
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return radix_enabled();
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}
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#endif /* __KERNEL__ */
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#endif /* __ASM_POWERPC_TLB_H */
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