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powerpc/mm/radix: Add radix callbacks for vmemmap and map_kernel page()

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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 23:26:00 +10:00
committed by Michael Ellerman
parent 31a14fae92
commit d9225ad923
3 changed files with 38 additions and 0 deletions
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20
arch/powerpc/mm/pgtable-radix.c
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@@ -354,3 +354,23 @@ void radix__setup_initial_memory_limit(phys_addr_t first_memblock_base,
/* Finally limit subsequent allocations */
memblock_set_current_limit(first_memblock_base + first_memblock_size);
}
#ifdef CONFIG_SPARSEMEM_VMEMMAP
int __meminit radix__vmemmap_create_mapping(unsigned long start,
unsigned long page_size,
unsigned long phys)
{
/* Create a PTE encoding */
unsigned long flags = _PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_KERNEL_RW;
BUG_ON(radix__map_kernel_page(start, phys, __pgprot(flags), page_size));
return 0;
}
#ifdef CONFIG_MEMORY_HOTPLUG
void radix__vmemmap_remove_mapping(unsigned long start, unsigned long page_size)
{
/* FIXME!! intel does more. We should free page tables mapping vmemmap ? */
}
#endif
#endif