powerpc/mm: Switch book3s 64 with 64K page size to 4 level page table

This is needed so that we can support both hash and radix page table
using single kernel. Radix kernel uses a 4 level table.

We now use physical address in upper page table tree levels. Even though
they are aligned to their size, for the masked bits we use the
bit positions as per PowerISA 3.0.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

1 files changed, 1 insertions, 32 deletions

diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h
index 7f60f7e814d4b..5f08a08322385 100644
--- a/arch/powerpc/include/asm/book3s/64/hash-4k.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h
@@ -58,39 +58,8 @@
 #define _PAGE_4K_PFN		0
 #ifndef __ASSEMBLY__
 /*
- * 4-level page tables related bits
+ * On all 4K setups, remap_4k_pfn() equates to remap_pfn_range()
  */
-
-#define pgd_none(pgd)		(!pgd_val(pgd))
-#define pgd_bad(pgd)		(pgd_val(pgd) == 0)
-#define pgd_present(pgd)	(pgd_val(pgd) != 0)
-#define pgd_page_vaddr(pgd)	__va(pgd_val(pgd) & ~PGD_MASKED_BITS)
-
-static inline void pgd_clear(pgd_t *pgdp)
-{
-	*pgdp = __pgd(0);
-}
-
-static inline pte_t pgd_pte(pgd_t pgd)
-{
-	return __pte(pgd_val(pgd));
-}
-
-static inline pgd_t pte_pgd(pte_t pte)
-{
-	return __pgd(pte_val(pte));
-}
-extern struct page *pgd_page(pgd_t pgd);
-
-#define pud_offset(pgdp, addr)	\
-  (((pud_t *) pgd_page_vaddr(*(pgdp))) + \
-    (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
-
-#define pud_ERROR(e) \
-	pr_err("%s:%d: bad pud %08lx.\n", __FILE__, __LINE__, pud_val(e))
-
-/*
- * On all 4K setups, remap_4k_pfn() equates to remap_pfn_range() */
 #define remap_4k_pfn(vma, addr, pfn, prot)	\
 	remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, (prot))