powerpc/mm: Drop CONFIG_PPC_HAS_HASH_64K

The relation between CONFIG_PPC_HAS_HASH_64K and CONFIG_PPC_64K_PAGES is
painfully complicated.

But if we rearrange it enough we can see that PPC_HAS_HASH_64K
essentially depends on PPC_STD_MMU_64 && PPC_64K_PAGES.

We can then notice that PPC_HAS_HASH_64K is used in files that are only
built for PPC_STD_MMU_64, meaning it's equivalent to PPC_64K_PAGES.

So replace all uses and drop it.

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

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index b77035f..b447918 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -519,11 +519,6 @@ config NODES_SPAN_OTHER_NODES
        def_bool y
        depends on NEED_MULTIPLE_NODES
 
-config PPC_HAS_HASH_64K
-       bool
-       depends on PPC64
-       default n
-
 config STDBINUTILS
        bool "Using standard binutils settings"
        depends on 44x
@@ -571,7 +566,6 @@ config PPC_16K_PAGES
 config PPC_64K_PAGES
        bool "64k page size"
        depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
-       select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 
 config PPC_256K_PAGES
        bool "256k page size"

diff --git a/arch/powerpc/mm/hash_low_64.S b/arch/powerpc/mm/hash_low_64.S
index 463174a..3b49e32 100644 (file)
--- a/arch/powerpc/mm/hash_low_64.S
+++ b/arch/powerpc/mm/hash_low_64.S
@@ -701,7 +701,7 @@ htab_pte_insert_failure:
 
 #endif /* CONFIG_PPC_64K_PAGES */
 
-#ifdef CONFIG_PPC_HAS_HASH_64K
+#ifdef CONFIG_PPC_64K_PAGES
 
 /*****************************************************************************
  *                                                                           *
@@ -993,7 +993,7 @@ ht64_pte_insert_failure:
        b       ht64_bail
 
 
-#endif /* CONFIG_PPC_HAS_HASH_64K */
+#endif /* CONFIG_PPC_64K_PAGES */
 
 
 /*****************************************************************************

diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index 5ec987f..aee7017 100644 (file)
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -640,7 +640,7 @@ extern u32 ht64_call_hpte_updatepp[];
 
 static void __init htab_finish_init(void)
 {
-#ifdef CONFIG_PPC_HAS_HASH_64K
+#ifdef CONFIG_PPC_64K_PAGES
        patch_branch(ht64_call_hpte_insert1,
                ppc_function_entry(ppc_md.hpte_insert),
                BRANCH_SET_LINK);
@@ -653,7 +653,7 @@ static void __init htab_finish_init(void)
        patch_branch(ht64_call_hpte_updatepp,
                ppc_function_entry(ppc_md.hpte_updatepp),
                BRANCH_SET_LINK);
-#endif /* CONFIG_PPC_HAS_HASH_64K */
+#endif /* CONFIG_PPC_64K_PAGES */
 
        patch_branch(htab_call_hpte_insert1,
                ppc_function_entry(ppc_md.hpte_insert),
@@ -1151,12 +1151,12 @@ int hash_page_mm(struct mm_struct *mm, unsigned long ea,
                check_paca_psize(ea, mm, psize, user_region);
 #endif /* CONFIG_PPC_64K_PAGES */
 
-#ifdef CONFIG_PPC_HAS_HASH_64K
+#ifdef CONFIG_PPC_64K_PAGES
        if (psize == MMU_PAGE_64K)
                rc = __hash_page_64K(ea, access, vsid, ptep, trap,
                                     flags, ssize);
        else
-#endif /* CONFIG_PPC_HAS_HASH_64K */
+#endif /* CONFIG_PPC_64K_PAGES */
        {
                int spp = subpage_protection(mm, ea);
                if (access & spp)
@@ -1264,12 +1264,12 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
                update_flags |= HPTE_LOCAL_UPDATE;
 
        /* Hash it in */
-#ifdef CONFIG_PPC_HAS_HASH_64K
+#ifdef CONFIG_PPC_64K_PAGES
        if (mm->context.user_psize == MMU_PAGE_64K)
                rc = __hash_page_64K(ea, access, vsid, ptep, trap,
                                     update_flags, ssize);
        else
-#endif /* CONFIG_PPC_HAS_HASH_64K */
+#endif /* CONFIG_PPC_64K_PAGES */
                rc = __hash_page_4K(ea, access, vsid, ptep, trap, update_flags,
                                    ssize, subpage_protection(mm, ea));