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authorLi Zhong <zhong@linux.vnet.ibm.com>2014-06-11 16:23:37 +0800
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-08-05 16:34:15 +1000
commited5694a8464a133582c632f8081324408bcc486d (patch)
tree841e712ff24ce6bedead1f6c45b57942023376b3 /arch/powerpc
parentbd8cb03dbe77a529945aa270a18c1ba074f729c6 (diff)
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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')
-rw-r--r--arch/powerpc/mm/hash_utils_64.c2
-rw-r--r--arch/powerpc/mm/init_64.c22
2 files changed, 23 insertions, 1 deletions
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 6b7c1c824cf9..daee7f4e5a14 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -243,7 +243,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
}
#ifdef CONFIG_MEMORY_HOTPLUG
-static int htab_remove_mapping(unsigned long vstart, unsigned long vend,
+int htab_remove_mapping(unsigned long vstart, unsigned long vend,
int psize, int ssize)
{
unsigned long vaddr;
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index fa5d28b4e726..69203c8afb51 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;