1 /* 2 * TLB shootdown specifics for powerpc 3 * 4 * Copyright (C) 2002 Anton Blanchard, IBM Corp. 5 * Copyright (C) 2002 Paul Mackerras, IBM Corp. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12 #ifndef _ASM_POWERPC_TLB_H 13 #define _ASM_POWERPC_TLB_H 14 #ifdef __KERNEL__ 15 16 #ifndef __powerpc64__ 17 #include <asm/pgtable.h> 18 #endif 19 #include <asm/pgalloc.h> 20 #include <asm/tlbflush.h> 21 #ifndef __powerpc64__ 22 #include <asm/page.h> 23 #include <asm/mmu.h> 24 #endif 25 26 #include <linux/pagemap.h> 27 28 #define tlb_start_vma(tlb, vma) do { } while (0) 29 #define tlb_end_vma(tlb, vma) do { } while (0) 30 #define __tlb_remove_tlb_entry __tlb_remove_tlb_entry 31 #define tlb_remove_check_page_size_change tlb_remove_check_page_size_change 32 33 extern void tlb_flush(struct mmu_gather *tlb); 34 35 /* Get the generic bits... */ 36 #include <asm-generic/tlb.h> 37 38 extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, 39 unsigned long address); 40 41 static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, 42 unsigned long address) 43 { 44 #ifdef CONFIG_PPC_STD_MMU_32 45 if (pte_val(*ptep) & _PAGE_HASHPTE) 46 flush_hash_entry(tlb->mm, ptep, address); 47 #endif 48 } 49 50 static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb, 51 unsigned int page_size) 52 { 53 if (!tlb->page_size) 54 tlb->page_size = page_size; 55 else if (tlb->page_size != page_size) { 56 tlb_flush_mmu(tlb); 57 /* 58 * update the page size after flush for the new 59 * mmu_gather. 60 */ 61 tlb->page_size = page_size; 62 } 63 } 64 65 #ifdef CONFIG_SMP 66 static inline int mm_is_core_local(struct mm_struct *mm) 67 { 68 return cpumask_subset(mm_cpumask(mm), 69 topology_sibling_cpumask(smp_processor_id())); 70 } 71 72 static inline int mm_is_thread_local(struct mm_struct *mm) 73 { 74 return cpumask_equal(mm_cpumask(mm), 75 cpumask_of(smp_processor_id())); 76 } 77 78 #else 79 static inline int mm_is_core_local(struct mm_struct *mm) 80 { 81 return 1; 82 } 83 84 static inline int mm_is_thread_local(struct mm_struct *mm) 85 { 86 return 1; 87 } 88 #endif 89 90 #endif /* __KERNEL__ */ 91 #endif /* __ASM_POWERPC_TLB_H */ 92