+ mm-merge-pte_mkhuge-call-into-arch_make_huge_pte.patch added to -mm tree

+ mm-merge-pte_mkhuge-call-into-arch_make_huge_pte.patch added to -mm tree

[Andrew Morton]

The patch titled
     Subject: mm: merge pte_mkhuge() call into arch_make_huge_pte()
has been added to the -mm tree.  Its filename is
     mm-merge-pte_mkhuge-call-into-arch_make_huge_pte.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-merge-pte_mkhuge-call-into-arch_make_huge_pte.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-merge-pte_mkhuge-call-into-arch_make_huge_pte.patch

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------------------------------------------------------
From: Anshuman Khandual <anshuman.khandual@arm.com>
Subject: mm: merge pte_mkhuge() call into arch_make_huge_pte()

Each call into pte_mkhuge() is invariably followed by
arch_make_huge_pte().  Instead arch_make_huge_pte() can accommodate
pte_mkhuge() at the beginning.  This updates generic fallback stub for
arch_make_huge_pte() and available platforms definitions.  This makes huge
pte creation much cleaner and easier to follow.

Link: https://lkml.kernel.org/r/1643860669-26307-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/arm64/mm/hugetlbpage.c                      |    1 +
 arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h |    4 ++--
 arch/sparc/mm/hugetlbpage.c                      |    1 +
 include/linux/hugetlb.h                          |    2 +-
 mm/hugetlb.c                                     |    3 +--
 mm/vmalloc.c                                     |    1 -
 6 files changed, 6 insertions(+), 6 deletions(-)

--- a/arch/arm64/mm/hugetlbpage.c~mm-merge-pte_mkhuge-call-into-arch_make_huge_pte
+++ a/arch/arm64/mm/hugetlbpage.c
@@ -347,6 +347,7 @@ pte_t arch_make_huge_pte(pte_t entry, un
 {
 	size_t pagesize = 1UL << shift;
 
+	entry = pte_mkhuge(entry);
 	if (pagesize == CONT_PTE_SIZE) {
 		entry = pte_mkcont(entry);
 	} else if (pagesize == CONT_PMD_SIZE) {
--- a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h~mm-merge-pte_mkhuge-call-into-arch_make_huge_pte
+++ a/arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h
@@ -71,9 +71,9 @@ static inline pte_t arch_make_huge_pte(p
 	size_t size = 1UL << shift;
 
 	if (size == SZ_16K)
-		return __pte(pte_val(entry) & ~_PAGE_HUGE);
+		return __pte(pte_val(entry) | _PAGE_SPS);
 	else
-		return entry;
+		return __pte(pte_val(entry) | _PAGE_SPS | _PAGE_HUGE);
 }
 #define arch_make_huge_pte arch_make_huge_pte
 #endif
--- a/arch/sparc/mm/hugetlbpage.c~mm-merge-pte_mkhuge-call-into-arch_make_huge_pte
+++ a/arch/sparc/mm/hugetlbpage.c
@@ -181,6 +181,7 @@ pte_t arch_make_huge_pte(pte_t entry, un
 {
 	pte_t pte;
 
+	entry = pte_mkhuge(entry);
 	pte = hugepage_shift_to_tte(entry, shift);
 
 #ifdef CONFIG_SPARC64
--- a/include/linux/hugetlb.h~mm-merge-pte_mkhuge-call-into-arch_make_huge_pte
+++ a/include/linux/hugetlb.h
@@ -754,7 +754,7 @@ static inline void arch_clear_hugepage_f
 static inline pte_t arch_make_huge_pte(pte_t entry, unsigned int shift,
 				       vm_flags_t flags)
 {
-	return entry;
+	return pte_mkhuge(entry);
 }
 #endif
 
--- a/mm/hugetlb.c~mm-merge-pte_mkhuge-call-into-arch_make_huge_pte
+++ a/mm/hugetlb.c
@@ -4637,7 +4637,6 @@ static pte_t make_huge_pte(struct vm_are
 					   vma->vm_page_prot));
 	}
 	entry = pte_mkyoung(entry);
-	entry = pte_mkhuge(entry);
 	entry = arch_make_huge_pte(entry, shift, vma->vm_flags);
 
 	return entry;
@@ -6173,7 +6172,7 @@ unsigned long hugetlb_change_protection(
 			unsigned int shift = huge_page_shift(hstate_vma(vma));
 
 			old_pte = huge_ptep_modify_prot_start(vma, address, ptep);
-			pte = pte_mkhuge(huge_pte_modify(old_pte, newprot));
+			pte = huge_pte_modify(old_pte, newprot);
 			pte = arch_make_huge_pte(pte, shift, vma->vm_flags);
 			huge_ptep_modify_prot_commit(vma, address, ptep, old_pte, pte);
 			pages++;
--- a/mm/vmalloc.c~mm-merge-pte_mkhuge-call-into-arch_make_huge_pte
+++ a/mm/vmalloc.c
@@ -118,7 +118,6 @@ static int vmap_pte_range(pmd_t *pmd, un
 		if (size != PAGE_SIZE) {
 			pte_t entry = pfn_pte(pfn, prot);
 
-			entry = pte_mkhuge(entry);
 			entry = arch_make_huge_pte(entry, ilog2(size), 0);
 			set_huge_pte_at(&init_mm, addr, pte, entry);
 			pfn += PFN_DOWN(size);
_

Patches currently in -mm which might be from anshuman.khandual@arm.com are

mm-generalize-arch_has_filter_pgprot.patch
mm-merge-pte_mkhuge-call-into-arch_make_huge_pte.patch
mm-hugetlb-generalize-arch_want_general_hugetlb.patch
mm-migration-add-trace-events-for-thp-migrations.patch
mm-migration-add-trace-events-for-base-page-and-hugetlb-migrations.patch