powerpc/64s/mm: Move __real_pte stubs into hash-4k.h

The stub versions of __real_pte() etc are only used with HPT & 4K pages,
so move them into the hash-4k.h header.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240821080729.872034-1-mpe@ellerman.id.au

diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h
index c654c376ef8b8662581be2e54fa19ce83a9c3514..c3efacab4b941202a4020a8077653b82c6595722 100644 (file)
--- a/arch/powerpc/include/asm/book3s/64/hash-4k.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h
@@ -74,6 +74,26 @@
 #define remap_4k_pfn(vma, addr, pfn, prot)     \
        remap_pfn_range((vma), (addr), (pfn), PAGE_SIZE, (prot))
 
+/*
+ * With 4K page size the real_pte machinery is all nops.
+ */
+#define __real_pte(e, p, o)            ((real_pte_t){(e)})
+#define __rpte_to_pte(r)       ((r).pte)
+#define __rpte_to_hidx(r,index)        (pte_val(__rpte_to_pte(r)) >> H_PAGE_F_GIX_SHIFT)
+
+#define pte_iterate_hashed_subpages(rpte, psize, va, index, shift)       \
+       do {                                                             \
+               index = 0;                                               \
+               shift = mmu_psize_defs[psize].shift;                     \
+
+#define pte_iterate_hashed_end() } while(0)
+
+/*
+ * We expect this to be called only for user addresses or kernel virtual
+ * addresses other than the linear mapping.
+ */
+#define pte_pagesize_index(mm, addr, pte)      MMU_PAGE_4K
+
 /*
  * 4K PTE format is different from 64K PTE format. Saving the hash_slot is just
  * a matter of returning the PTE bits that need to be modified. On 64K PTE,

diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 519b1743a0f4df11b6746c84464b3e9f9a8994de..f8ba72573caebfbcc4fbfcd4b487e071eb2105d9 100644 (file)
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -330,32 +330,6 @@ static inline unsigned long pud_leaf_size(pud_t pud)
 
 #ifndef __ASSEMBLY__
 
-/*
- * This is the default implementation of various PTE accessors, it's
- * used in all cases except Book3S with 64K pages where we have a
- * concept of sub-pages
- */
-#ifndef __real_pte
-
-#define __real_pte(e, p, o)            ((real_pte_t){(e)})
-#define __rpte_to_pte(r)       ((r).pte)
-#define __rpte_to_hidx(r,index)        (pte_val(__rpte_to_pte(r)) >> H_PAGE_F_GIX_SHIFT)
-
-#define pte_iterate_hashed_subpages(rpte, psize, va, index, shift)       \
-       do {                                                             \
-               index = 0;                                               \
-               shift = mmu_psize_defs[psize].shift;                     \
-
-#define pte_iterate_hashed_end() } while(0)
-
-/*
- * We expect this to be called only for user addresses or kernel virtual
- * addresses other than the linear mapping.
- */
-#define pte_pagesize_index(mm, addr, pte)      MMU_PAGE_4K
-
-#endif /* __real_pte */
-
 static inline unsigned long pte_update(struct mm_struct *mm, unsigned long addr,
                                       pte_t *ptep, unsigned long clr,
                                       unsigned long set, int huge)