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powerpc/mm: Abstraction for vmemmap and map_kernel_page()

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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>
This commit is contained in:
Aneesh Kumar K.V
2016-04-29 23:25:59 +10:00
committed by Michael Ellerman
parent 2bfd65e45e
commit 31a14fae92
6 changed files with 41 additions and 16 deletions
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arch/powerpc/include/asm/book3s/64/pgtable.h
+20
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@@ -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