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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-04-29 13:25:59 (GMT) |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-01 08:33:02 (GMT) |
| commit | 31a14fae92b29b7a7fcc65600f072bf448d3b0eb (patch) | |
| tree | 87cec341565d9bfb78490f35eb322c8abf4d46cd /arch/powerpc/include | |
| parent | 2bfd65e45e877fb5704730244da67c748d28a1b8 (diff) | |
| download | linux-31a14fae92b29b7a7fcc65600f072bf448d3b0eb.tar.xz | |
powerpc/mm: Abstraction for vmemmap and map_kernel_page()
For hash we create vmemmap mapping using bolted hash page table entries.
For radix we fill the radix page table. The next patch will add the
radix details for creating vmemmap mappings.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/hash.h | 8 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgtable.h | 20 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/nohash/64/pgtable.h | 7 |
3 files changed, 35 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/hash.h b/arch/powerpc/include/asm/book3s/64/hash.h index 6271439..cd3e915 100644 --- a/arch/powerpc/include/asm/book3s/64/hash.h +++ b/arch/powerpc/include/asm/book3s/64/hash.h @@ -193,6 +193,14 @@ static inline void hpte_do_hugepage_flush(struct mm_struct *mm, } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ + +extern int hash__map_kernel_page(unsigned long ea, unsigned long pa, + unsigned long flags); +extern int __meminit hash__vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys); +extern void hash__vmemmap_remove_mapping(unsigned long start, + unsigned long page_size); #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_BOOK3S_64_HASH_H */ diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index a22b478..c1b787d 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -722,6 +722,26 @@ extern struct page *pgd_page(pgd_t pgd); void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); void pgtable_cache_init(void); +static inline int map_kernel_page(unsigned long ea, unsigned long pa, + unsigned long flags) +{ + return hash__map_kernel_page(ea, pa, flags); +} + +static inline int __meminit vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys) +{ + return hash__vmemmap_create_mapping(start, page_size, phys); +} + +#ifdef CONFIG_MEMORY_HOTPLUG +static inline void vmemmap_remove_mapping(unsigned long start, + unsigned long page_size) +{ + return hash__vmemmap_remove_mapping(start, page_size); +} +#endif struct page *realmode_pfn_to_page(unsigned long pfn); #ifdef CONFIG_TRANSPARENT_HUGEPAGE diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h index 10debb9..f143d6f 100644 --- a/arch/powerpc/include/asm/nohash/64/pgtable.h +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h @@ -362,6 +362,13 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry) void pgtable_cache_add(unsigned shift, void (*ctor)(void *)); void pgtable_cache_init(void); +extern int map_kernel_page(unsigned long ea, unsigned long pa, + unsigned long flags); +extern int __meminit vmemmap_create_mapping(unsigned long start, + unsigned long page_size, + unsigned long phys); +extern void vmemmap_remove_mapping(unsigned long start, + unsigned long page_size); #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_NOHASH_64_PGTABLE_H */ |