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| author | Li Zhong <zhong@linux.vnet.ibm.com> | 2014-06-11 16:23:37 +0800 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2014-08-05 16:34:15 +1000 |
| commit | ed5694a8464a133582c632f8081324408bcc486d (patch) | |
| tree | 841e712ff24ce6bedead1f6c45b57942023376b3 /arch/powerpc/mm/init_64.c | |
| parent | bd8cb03dbe77a529945aa270a18c1ba074f729c6 (diff) | |
| download | op-kernel-dev-ed5694a8464a133582c632f8081324408bcc486d.zip op-kernel-dev-ed5694a8464a133582c632f8081324408bcc486d.tar.gz | |
powerpc: implement vmemmap_remove_mapping() for BOOK3S
This is to be called in vmemmap_free(), leave the implementation on BOOK3E
empty as before.
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Acked-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm/init_64.c')
| -rw-r--r-- | arch/powerpc/mm/init_64.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index fa5d28b..69203c8 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -212,6 +212,13 @@ static void __meminit vmemmap_create_mapping(unsigned long start, for (i = 0; i < page_size; i += PAGE_SIZE) BUG_ON(map_kernel_page(start + i, phys, flags)); } + +#ifdef CONFIG_MEMORY_HOTPLUG +static void vmemmap_remove_mapping(unsigned long start, + unsigned long page_size) +{ +} +#endif #else /* CONFIG_PPC_BOOK3E */ static void __meminit vmemmap_create_mapping(unsigned long start, unsigned long page_size, @@ -223,6 +230,21 @@ static void __meminit vmemmap_create_mapping(unsigned long start, mmu_kernel_ssize); BUG_ON(mapped < 0); } + +#ifdef CONFIG_MEMORY_HOTPLUG +extern int htab_remove_mapping(unsigned long vstart, unsigned long vend, + int psize, int ssize); + +static void vmemmap_remove_mapping(unsigned long start, + unsigned long page_size) +{ + int mapped = htab_remove_mapping(start, start + page_size, + mmu_vmemmap_psize, + mmu_kernel_ssize); + BUG_ON(mapped < 0); +} +#endif + #endif /* CONFIG_PPC_BOOK3E */ struct vmemmap_backing *vmemmap_list; |
