powerpc: Allow ppc_md platform hook to override memory_block_size_bytes
The pseries platform code unconditionally overrides
memory_block_size_bytes regardless of the running platform.
Create a ppc_md hook that so each platform can choose to
do what it wants.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index 374abc2..f92b0b5 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -98,6 +98,9 @@
void (*iommu_save)(void);
void (*iommu_restore)(void);
#endif
+#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+ unsigned long (*memory_block_size)(void);
+#endif
#endif /* CONFIG_PPC64 */
void (*pci_dma_dev_setup)(struct pci_dev *dev);