powerpc: Reduce PTE table memory wastage

[firefly-linux-kernel-4.4.55.git] / arch / powerpc / include / asm / mmu-book3e.h

diff --git a/arch/powerpc/include/asm/mmu-book3e.h b/arch/powerpc/include/asm/mmu-book3e.h
index 99d43e0c1e4af1198ea4fd07ad3834d0eb4c8f82..8bd560c5fe8431fb6c963fe9f56dfad32c8010d4 100644 (file)
--- a/arch/powerpc/include/asm/mmu-book3e.h
+++ b/arch/powerpc/include/asm/mmu-book3e.h
@@ -231,6 +231,10 @@ typedef struct {
        u64 high_slices_psize;  /* 4 bits per slice for now */
        u16 user_psize;         /* page size index */
 #endif
+#ifdef CONFIG_PPC_64K_PAGES
+       /* for 4K PTE fragment support */
+       void *pte_frag;
+#endif
 } mm_context_t;
 
 /* Page size definitions, common between 32 and 64-bit