Commit fecbfabe authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Michael Ellerman

powerpc: Fix build with CONFIG_MEMORY_HOTPLUG on some configs

For memory hotplug to work, the MMU code needs to provide the functions
create_section_mapping() and remove_section_mapping() to respectively
map and unmap portions of the linear mapping.

At the moment only hash64 provides these, so we provide weak stubs that
just error out. This fixes the build with configurations such as 64-bit
BookE with CONFIG_MEMORY_HOTPLUG enabled.
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent e93d8e67
...@@ -116,6 +116,16 @@ int memory_add_physaddr_to_nid(u64 start) ...@@ -116,6 +116,16 @@ int memory_add_physaddr_to_nid(u64 start)
} }
#endif #endif
int __weak create_section_mapping(unsigned long start, unsigned long end)
{
return -ENODEV;
}
int __weak remove_section_mapping(unsigned long start, unsigned long end)
{
return -ENODEV;
}
int arch_add_memory(int nid, u64 start, u64 size, bool for_device) int arch_add_memory(int nid, u64 start, u64 size, bool for_device)
{ {
struct pglist_data *pgdata; struct pglist_data *pgdata;
......
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