powerpc/mm/radix: Create separate mappings for hot-plugged memory

[linux-2.6-block.git] / arch / powerpc / include / asm / book3s / 64 / mmu.h

diff --git a/arch/powerpc/include/asm/book3s/64/mmu.h b/arch/powerpc/include/asm/book3s/64/mmu.h
index 5393a535240c745efbe1f3878124385a703be1d9..15aae924f41c110002a6c26d81d6d60f95eec0df 100644 (file)
--- a/arch/powerpc/include/asm/book3s/64/mmu.h
+++ b/arch/powerpc/include/asm/book3s/64/mmu.h
@@ -82,6 +82,11 @@ extern unsigned int mmu_pid_bits;
 /* Base PID to allocate from */
 extern unsigned int mmu_base_pid;
 
+/*
+ * memory block size used with radix translation.
+ */
+extern unsigned int __ro_after_init radix_mem_block_size;
+
 #define PRTB_SIZE_SHIFT        (mmu_pid_bits + 4)
 #define PRTB_ENTRIES   (1ul << mmu_pid_bits)