xref: /openbmc/linux/arch/powerpc/include/asm/tlb.h (revision b34e08d5)
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 
31 extern void tlb_flush(struct mmu_gather *tlb);
32 
33 /* Get the generic bits... */
34 #include <asm-generic/tlb.h>
35 
36 extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
37 			     unsigned long address);
38 
39 static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
40 					  unsigned long address)
41 {
42 #ifdef CONFIG_PPC_STD_MMU_32
43 	if (pte_val(*ptep) & _PAGE_HASHPTE)
44 		flush_hash_entry(tlb->mm, ptep, address);
45 #endif
46 }
47 
48 #endif /* __KERNEL__ */
49 #endif /* __ASM_POWERPC_TLB_H */
50