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| author | Aneesh Kumar K.V | 2016-04-29 15:26:00 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2016-05-01 10:33:03 +0200 |
| commit | d9225ad923514252ec8d10dac67e5a7a2f0aa345 (patch) | |
| tree | 8294cdec247696696393f5875869cc5c502bd3e2 /arch/powerpc/mm/pgtable-radix.c | |
| parent | powerpc/mm: Abstraction for vmemmap and map_kernel_page() (diff) | |
| download | kernel-qcow2-linux-d9225ad923514252ec8d10dac67e5a7a2f0aa345.tar.gz kernel-qcow2-linux-d9225ad923514252ec8d10dac67e5a7a2f0aa345.tar.xz kernel-qcow2-linux-d9225ad923514252ec8d10dac67e5a7a2f0aa345.zip | |
powerpc/mm/radix: Add radix callbacks for vmemmap and map_kernel page()
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/mm/pgtable-radix.c')
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index 4918850e1061..0472f8aa40e1 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -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 |