[PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alexandre Ghiti]

In order to reduce copy/paste of functions across architectures and then
make riscv hugetlb port (and future ports) simpler and smaller, this
patchset intends to factorize the numerous hugetlb primitives that are
defined across all the architectures.

Except for prepare_hugepage_range, this patchset moves the versions that
are just pass-through to standard pte primitives into
asm-generic/hugetlb.h by using the same #ifdef semantic that can be
found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.

s390 architecture has not been tackled in this serie since it does not
use asm-generic/hugetlb.h at all.
powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).

This patchset has been compiled on x86 only. 

Changelog:

v4:
  Fix powerpc build error due to misplacing of #include
  <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
  pointed by Christophe Leroy.

v1, v2, v3:
  Same version, just problems with email provider and misuse of
  --batch-size option of git send-email

Alexandre Ghiti (11):
  hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
  hugetlb: Introduce generic version of hugetlb_free_pgd_range
  hugetlb: Introduce generic version of set_huge_pte_at
  hugetlb: Introduce generic version of huge_ptep_get_and_clear
  hugetlb: Introduce generic version of huge_ptep_clear_flush
  hugetlb: Introduce generic version of huge_pte_none
  hugetlb: Introduce generic version of huge_pte_wrprotect
  hugetlb: Introduce generic version of prepare_hugepage_range
  hugetlb: Introduce generic version of huge_ptep_set_wrprotect
  hugetlb: Introduce generic version of huge_ptep_set_access_flags
  hugetlb: Introduce generic version of huge_ptep_get

 arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
 arch/arm/include/asm/hugetlb.h               | 33 +----------
 arch/arm64/include/asm/hugetlb.h             | 39 +++---------
 arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
 arch/mips/include/asm/hugetlb.h              | 40 +++----------
 arch/parisc/include/asm/hugetlb.h            | 33 +++--------
 arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
 arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
 arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
 arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
 arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
 arch/sh/include/asm/hugetlb.h                | 54 ++---------------
 arch/sparc/include/asm/hugetlb.h             | 40 +++----------
 arch/x86/include/asm/hugetlb.h               | 72 +----------------------
 include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
 15 files changed, 143 insertions(+), 384 deletions(-)

-- 
2.16.2

[PATCH v4 01/11] hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h

[Alexandre Ghiti]

asm-generic/hugetlb.h proposes generic implementations of hugetlb
related functions: use __HAVE_ARCH_HUGE* defines in order to make arch
specific implementations of hugetlb functions consistent with pgtable.h
scheme.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm64/include/asm/hugetlb.h | 2 +-
 include/asm-generic/hugetlb.h    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index e73f68569624..3fcf14663dfa 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -81,9 +81,9 @@ extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
 				    unsigned long addr, pte_t *ptep);
 extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
 				  unsigned long addr, pte_t *ptep);
+#define __HAVE_ARCH_HUGE_PTE_CLEAR
 extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 			   pte_t *ptep, unsigned long sz);
-#define huge_pte_clear huge_pte_clear
 extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
 				 pte_t *ptep, pte_t pte, unsigned long sz);
 #define set_huge_swap_pte_at set_huge_swap_pte_at
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 9d0cde8ab716..3da7cff52360 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -32,7 +32,7 @@ static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
 	return pte_modify(pte, newprot);
 }
 
-#ifndef huge_pte_clear
+#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
 static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 		    pte_t *ptep, unsigned long sz)
 {
-- 
2.16.2

[PATCH v4 02/11] hugetlb: Introduce generic version of hugetlb_free_pgd_range

[Alexandre Ghiti]

arm, arm64, mips, parisc, sh, x86 architectures use the
same version of hugetlb_free_pgd_range, so move this generic
implementation into asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb.h     | 12 ++----------
 arch/arm64/include/asm/hugetlb.h   | 10 ----------
 arch/ia64/include/asm/hugetlb.h    |  5 +++--
 arch/mips/include/asm/hugetlb.h    | 13 ++-----------
 arch/parisc/include/asm/hugetlb.h  | 12 ++----------
 arch/powerpc/include/asm/hugetlb.h |  4 +++-
 arch/sh/include/asm/hugetlb.h      | 12 ++----------
 arch/sparc/include/asm/hugetlb.h   |  4 +++-
 arch/x86/include/asm/hugetlb.h     | 11 ++---------
 include/asm-generic/hugetlb.h      | 11 +++++++++++
 10 files changed, 30 insertions(+), 64 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
index 7d26f6c4f0f5..047b893ef95d 100644
--- a/arch/arm/include/asm/hugetlb.h
+++ b/arch/arm/include/asm/hugetlb.h
@@ -23,19 +23,9 @@
 #define _ASM_ARM_HUGETLB_H
 
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
 
 #include <asm/hugetlb-3level.h>
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
-					  unsigned long addr, unsigned long end,
-					  unsigned long floor,
-					  unsigned long ceiling)
-{
-	free_pgd_range(tlb, addr, end, floor, ceiling);
-}
-
-
 static inline int is_hugepage_only_range(struct mm_struct *mm,
 					 unsigned long addr, unsigned long len)
 {
@@ -68,4 +58,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 	clear_bit(PG_dcache_clean, &page->flags);
 }
 
+#include <asm-generic/hugetlb.h>
+
 #endif /* _ASM_ARM_HUGETLB_H */
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 3fcf14663dfa..4af1a800a900 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -25,16 +25,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
 	return READ_ONCE(*ptep);
 }
 
-
-
-static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
-					  unsigned long addr, unsigned long end,
-					  unsigned long floor,
-					  unsigned long ceiling)
-{
-	free_pgd_range(tlb, addr, end, floor, ceiling);
-}
-
 static inline int is_hugepage_only_range(struct mm_struct *mm,
 					 unsigned long addr, unsigned long len)
 {
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index 74d2a5540aaf..afe9fa4d969b 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -3,9 +3,8 @@
 #define _ASM_IA64_HUGETLB_H
 
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
-
 
+#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
 			    unsigned long end, unsigned long floor,
 			    unsigned long ceiling);
@@ -70,4 +69,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
 
+#include <asm-generic/hugetlb.h>
+
 #endif /* _ASM_IA64_HUGETLB_H */
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 982bc0685330..53764050243e 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -10,8 +10,6 @@
 #define __ASM_HUGETLB_H
 
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
-
 
 static inline int is_hugepage_only_range(struct mm_struct *mm,
 					 unsigned long addr,
@@ -38,15 +36,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
-					  unsigned long addr,
-					  unsigned long end,
-					  unsigned long floor,
-					  unsigned long ceiling)
-{
-	free_pgd_range(tlb, addr, end, floor, ceiling);
-}
-
 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 				   pte_t *ptep, pte_t pte)
 {
@@ -114,4 +103,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
 
+#include <asm-generic/hugetlb.h>
+
 #endif /* __ASM_HUGETLB_H */
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 58e0f4620426..28c23b68d38d 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -3,8 +3,6 @@
 #define _ASM_PARISC64_HUGETLB_H
 
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
-
 
 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 		     pte_t *ptep, pte_t pte);
@@ -32,14 +30,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
-					  unsigned long addr, unsigned long end,
-					  unsigned long floor,
-					  unsigned long ceiling)
-{
-	free_pgd_range(tlb, addr, end, floor, ceiling);
-}
-
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
@@ -71,4 +61,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
 
+#include <asm-generic/hugetlb.h>
+
 #endif /* _ASM_PARISC64_HUGETLB_H */
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 3225eb6402cc..a7d5c739df9b 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -4,7 +4,6 @@
 
 #ifdef CONFIG_HUGETLB_PAGE
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
 
 extern struct kmem_cache *hugepte_cache;
 
@@ -113,6 +112,7 @@ static inline void flush_hugetlb_page(struct vm_area_struct *vma,
 void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
 #endif
 
+#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
 			    unsigned long end, unsigned long floor,
 			    unsigned long ceiling);
@@ -179,6 +179,8 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
 
+#include <asm-generic/hugetlb.h>
+
 #else /* ! CONFIG_HUGETLB_PAGE */
 static inline void flush_hugetlb_page(struct vm_area_struct *vma,
 				      unsigned long vmaddr)
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index 735939c0f513..f6a51b609409 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -4,8 +4,6 @@
 
 #include <asm/cacheflush.h>
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
-
 
 static inline int is_hugepage_only_range(struct mm_struct *mm,
 					 unsigned long addr,
@@ -27,14 +25,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
-					  unsigned long addr, unsigned long end,
-					  unsigned long floor,
-					  unsigned long ceiling)
-{
-	free_pgd_range(tlb, addr, end, floor, ceiling);
-}
-
 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 				   pte_t *ptep, pte_t pte)
 {
@@ -85,4 +75,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 	clear_bit(PG_dcache_clean, &page->flags);
 }
 
+#include <asm-generic/hugetlb.h>
+
 #endif /* _ASM_SH_HUGETLB_H */
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 300557c66698..59d89b52ccb7 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -3,7 +3,6 @@
 #define _ASM_SPARC64_HUGETLB_H
 
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
 
 #ifdef CONFIG_HUGETLB_PAGE
 struct pud_huge_patch_entry {
@@ -84,8 +83,11 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
 
+#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
 			    unsigned long end, unsigned long floor,
 			    unsigned long ceiling);
 
+#include <asm-generic/hugetlb.h>
+
 #endif /* _ASM_SPARC64_HUGETLB_H */
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 5ed826da5e07..996ce8e15365 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -3,7 +3,6 @@
 #define _ASM_X86_HUGETLB_H
 
 #include <asm/page.h>
-#include <asm-generic/hugetlb.h>
 
 #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE)
 
@@ -28,14 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
-					  unsigned long addr, unsigned long end,
-					  unsigned long floor,
-					  unsigned long ceiling)
-{
-	free_pgd_range(tlb, addr, end, floor, ceiling);
-}
-
 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 				   pte_t *ptep, pte_t pte)
 {
@@ -90,4 +81,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 static inline bool gigantic_page_supported(void) { return true; }
 #endif
 
+#include <asm-generic/hugetlb.h>
+
 #endif /* _ASM_X86_HUGETLB_H */
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 3da7cff52360..c697ca9dda18 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -40,4 +40,15 @@ static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
+static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
+		unsigned long addr, unsigned long end,
+		unsigned long floor, unsigned long ceiling)
+{
+	free_pgd_range(tlb, addr, end, floor, ceiling);
+}
+
+
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 03/11] hugetlb: Introduce generic version of set_huge_pte_at

[Alexandre Ghiti]

arm, ia64, mips, powerpc, sh, x86 architectures use the
same version of set_huge_pte_at, so move this generic
implementation into asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb-3level.h | 6 ------
 arch/arm64/include/asm/hugetlb.h      | 1 +
 arch/ia64/include/asm/hugetlb.h       | 6 ------
 arch/mips/include/asm/hugetlb.h       | 6 ------
 arch/parisc/include/asm/hugetlb.h     | 1 +
 arch/powerpc/include/asm/hugetlb.h    | 6 ------
 arch/sh/include/asm/hugetlb.h         | 6 ------
 arch/sparc/include/asm/hugetlb.h      | 1 +
 arch/x86/include/asm/hugetlb.h        | 6 ------
 include/asm-generic/hugetlb.h         | 8 +++++++-
 10 files changed, 10 insertions(+), 37 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index d4014fbe5ea3..398fb06e8207 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
 	return retval;
 }
 
-static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-				   pte_t *ptep, pte_t pte)
-{
-	set_pte_at(mm, addr, ptep, pte);
-}
-
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 4af1a800a900..874661a1dff1 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -60,6 +60,7 @@ static inline void arch_clear_hugepage_flags(struct page *page)
 extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
 				struct page *page, int writable);
 #define arch_make_huge_pte arch_make_huge_pte
+#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
 extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 			    pte_t *ptep, pte_t pte);
 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index afe9fa4d969b..a235d6f60fb3 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -20,12 +20,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 		REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
 }
 
-static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-				   pte_t *ptep, pte_t pte)
-{
-	set_pte_at(mm, addr, ptep, pte);
-}
-
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 53764050243e..8ea439041d5d 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -36,12 +36,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-				   pte_t *ptep, pte_t pte)
-{
-	set_pte_at(mm, addr, ptep, pte);
-}
-
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 28c23b68d38d..77c8adbac7c3 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -4,6 +4,7 @@
 
 #include <asm/page.h>
 
+#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 		     pte_t *ptep, pte_t pte);
 
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index a7d5c739df9b..0794b53439d4 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -132,12 +132,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-				   pte_t *ptep, pte_t pte)
-{
-	set_pte_at(mm, addr, ptep, pte);
-}
-
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index f6a51b609409..bc552e37c1c9 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -25,12 +25,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-				   pte_t *ptep, pte_t pte)
-{
-	set_pte_at(mm, addr, ptep, pte);
-}
-
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 59d89b52ccb7..16b0c53ea6c9 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -12,6 +12,7 @@ struct pud_huge_patch_entry {
 extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
 #endif
 
+#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 		     pte_t *ptep, pte_t pte);
 
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 996ce8e15365..554d5614b375 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
-				   pte_t *ptep, pte_t pte)
-{
-	set_pte_at(mm, addr, ptep, pte);
-}
-
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
 {
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index c697ca9dda18..ee010b756246 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -47,8 +47,14 @@ static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
 {
 	free_pgd_range(tlb, addr, end, floor, ceiling);
 }
+#endif
 
-
+#ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
+static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
+		pte_t *ptep, pte_t pte)
+{
+	set_pte_at(mm, addr, ptep, pte);
+}
 #endif
 
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 04/11] hugetlb: Introduce generic version of huge_ptep_get_and_clear

[Alexandre Ghiti]

arm, ia64, sh, x86 architectures use the
same version of huge_ptep_get_and_clear, so move this generic
implementation into asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb-3level.h | 6 ------
 arch/arm64/include/asm/hugetlb.h      | 1 +
 arch/ia64/include/asm/hugetlb.h       | 6 ------
 arch/mips/include/asm/hugetlb.h       | 1 +
 arch/parisc/include/asm/hugetlb.h     | 1 +
 arch/powerpc/include/asm/hugetlb.h    | 1 +
 arch/sh/include/asm/hugetlb.h         | 6 ------
 arch/sparc/include/asm/hugetlb.h      | 1 +
 arch/x86/include/asm/hugetlb.h        | 6 ------
 include/asm-generic/hugetlb.h         | 8 ++++++++
 10 files changed, 13 insertions(+), 24 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index 398fb06e8207..ad36e84b819a 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -49,12 +49,6 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 	ptep_set_wrprotect(mm, addr, ptep);
 }
 
-static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
-					    unsigned long addr, pte_t *ptep)
-{
-	return ptep_get_and_clear(mm, addr, ptep);
-}
-
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty)
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 874661a1dff1..6ae0bcafe162 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -66,6 +66,7 @@ extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 				      unsigned long addr, pte_t *ptep,
 				      pte_t pte, int dirty);
+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 				     unsigned long addr, pte_t *ptep);
 extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index a235d6f60fb3..6719c74da0de 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -20,12 +20,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 		REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
 }
 
-static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
-					    unsigned long addr, pte_t *ptep)
-{
-	return ptep_get_and_clear(mm, addr, ptep);
-}
-
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 8ea439041d5d..0959cc5a41fa 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -36,6 +36,7 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 77c8adbac7c3..6e281e1bb336 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -8,6 +8,7 @@
 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 		     pte_t *ptep, pte_t pte);
 
+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
 			      pte_t *ptep);
 
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 0794b53439d4..970101cf9c82 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -132,6 +132,7 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index bc552e37c1c9..08ee6c00b5e9 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -25,12 +25,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
-					    unsigned long addr, pte_t *ptep)
-{
-	return ptep_get_and_clear(mm, addr, ptep);
-}
-
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 16b0c53ea6c9..944e3a4bfaff 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -16,6 +16,7 @@ extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 		     pte_t *ptep, pte_t pte);
 
+#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
 			      pte_t *ptep);
 
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 554d5614b375..48b8d9b13cc6 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
-					    unsigned long addr, pte_t *ptep)
-{
-	return ptep_get_and_clear(mm, addr, ptep);
-}
-
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index ee010b756246..0f6f151780dd 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -57,4 +57,12 @@ static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
+static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
+		unsigned long addr, pte_t *ptep)
+{
+	return ptep_get_and_clear(mm, addr, ptep);
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 05/11] hugetlb: Introduce generic version of huge_ptep_clear_flush

[Alexandre Ghiti]

arm, x86 architectures use the same version of
huge_ptep_clear_flush, so move this generic implementation into
asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb-3level.h | 6 ------
 arch/arm64/include/asm/hugetlb.h      | 1 +
 arch/ia64/include/asm/hugetlb.h       | 1 +
 arch/mips/include/asm/hugetlb.h       | 1 +
 arch/parisc/include/asm/hugetlb.h     | 1 +
 arch/powerpc/include/asm/hugetlb.h    | 1 +
 arch/sh/include/asm/hugetlb.h         | 1 +
 arch/sparc/include/asm/hugetlb.h      | 1 +
 arch/x86/include/asm/hugetlb.h        | 6 ------
 include/asm-generic/hugetlb.h         | 8 ++++++++
 10 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index ad36e84b819a..b897541520ef 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
 	return retval;
 }
 
-static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
-					 unsigned long addr, pte_t *ptep)
-{
-	ptep_clear_flush(vma, addr, ptep);
-}
-
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 6ae0bcafe162..4c8dd488554d 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -71,6 +71,7 @@ extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 				     unsigned long addr, pte_t *ptep);
 extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
 				    unsigned long addr, pte_t *ptep);
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
 				  unsigned long addr, pte_t *ptep);
 #define __HAVE_ARCH_HUGE_PTE_CLEAR
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index 6719c74da0de..41b5f6adeee4 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -20,6 +20,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 		REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 0959cc5a41fa..7df1f116a3cc 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -48,6 +48,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 	return pte;
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 6e281e1bb336..9afff26747a1 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -32,6 +32,7 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 970101cf9c82..0b02856aa85b 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -143,6 +143,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 #endif
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index 08ee6c00b5e9..9abf9c86b769 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -25,6 +25,7 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 944e3a4bfaff..651a9593fcee 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -42,6 +42,7 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 48b8d9b13cc6..8347d5abf882 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
-					 unsigned long addr, pte_t *ptep)
-{
-	ptep_clear_flush(vma, addr, ptep);
-}
-
 static inline int huge_pte_none(pte_t pte)
 {
 	return pte_none(pte);
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 0f6f151780dd..ffa63fd8388d 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -65,4 +65,12 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
+static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
+		unsigned long addr, pte_t *ptep)
+{
+	ptep_clear_flush(vma, addr, ptep);
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 06/11] hugetlb: Introduce generic version of huge_pte_none

[Alexandre Ghiti]

arm, arm64, ia64, parisc, powerpc, sh, sparc, x86 architectures
use the same version of huge_pte_none, so move this generic
implementation into asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb.h     | 5 -----
 arch/arm64/include/asm/hugetlb.h   | 5 -----
 arch/ia64/include/asm/hugetlb.h    | 5 -----
 arch/mips/include/asm/hugetlb.h    | 1 +
 arch/parisc/include/asm/hugetlb.h  | 5 -----
 arch/powerpc/include/asm/hugetlb.h | 5 -----
 arch/sh/include/asm/hugetlb.h      | 5 -----
 arch/sparc/include/asm/hugetlb.h   | 5 -----
 arch/x86/include/asm/hugetlb.h     | 5 -----
 include/asm-generic/hugetlb.h      | 7 +++++++
 10 files changed, 8 insertions(+), 40 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
index 047b893ef95d..3d2ce4dbc145 100644
--- a/arch/arm/include/asm/hugetlb.h
+++ b/arch/arm/include/asm/hugetlb.h
@@ -43,11 +43,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 4c8dd488554d..49247c6f94db 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -42,11 +42,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index 41b5f6adeee4..bf573500b3c4 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -26,11 +26,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 7df1f116a3cc..1c9c4531376c 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -55,6 +55,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 	flush_tlb_page(vma, addr & huge_page_mask(hstate_vma(vma)));
 }
 
+#define __HAVE_ARCH_HUGE_PTE_NONE
 static inline int huge_pte_none(pte_t pte)
 {
 	unsigned long val = pte_val(pte) & ~_PAGE_GLOBAL;
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 9afff26747a1..c09d8c74553c 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -38,11 +38,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 0b02856aa85b..3562d46585ba 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -152,11 +152,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 	flush_hugetlb_page(vma, addr);
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index 9abf9c86b769..a9f8266f33cf 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -31,11 +31,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 651a9593fcee..11115bbd712e 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -48,11 +48,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 8347d5abf882..c5fdc53b6e41 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -27,11 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline int huge_pte_none(pte_t pte)
-{
-	return pte_none(pte);
-}
-
 static inline pte_t huge_pte_wrprotect(pte_t pte)
 {
 	return pte_wrprotect(pte);
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index ffa63fd8388d..2fc3d68424e9 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -73,4 +73,11 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGE_PTE_NONE
+static inline int huge_pte_none(pte_t pte)
+{
+	return pte_none(pte);
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 07/11] hugetlb: Introduce generic version of huge_pte_wrprotect

[Alexandre Ghiti]

arm, arm64, ia64, mips, parisc, powerpc, sh, sparc, x86
architectures use the same version of huge_pte_wrprotect, so move
this generic implementation into asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb.h     | 5 -----
 arch/arm64/include/asm/hugetlb.h   | 5 -----
 arch/ia64/include/asm/hugetlb.h    | 5 -----
 arch/mips/include/asm/hugetlb.h    | 5 -----
 arch/parisc/include/asm/hugetlb.h  | 5 -----
 arch/powerpc/include/asm/hugetlb.h | 5 -----
 arch/sh/include/asm/hugetlb.h      | 5 -----
 arch/sparc/include/asm/hugetlb.h   | 5 -----
 arch/x86/include/asm/hugetlb.h     | 5 -----
 include/asm-generic/hugetlb.h      | 7 +++++++
 10 files changed, 7 insertions(+), 45 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
index 3d2ce4dbc145..1e718a626ef9 100644
--- a/arch/arm/include/asm/hugetlb.h
+++ b/arch/arm/include/asm/hugetlb.h
@@ -43,11 +43,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 	clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 49247c6f94db..1fd64ebf0cd7 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -42,11 +42,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 	clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index bf573500b3c4..82fe3d7a38d9 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -26,11 +26,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 1c9c4531376c..b3d6bb53ee6e 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -62,11 +62,6 @@ static inline int huge_pte_none(pte_t pte)
 	return !val || (val == (unsigned long)invalid_pte_table);
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index c09d8c74553c..5a102d7251e4 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -38,11 +38,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep);
 
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 3562d46585ba..7123599089c6 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -152,11 +152,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 	flush_hugetlb_page(vma, addr);
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 				      unsigned long addr, pte_t *ptep,
 				      pte_t pte, int dirty);
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index a9f8266f33cf..54f65094efe6 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -31,11 +31,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 11115bbd712e..f661362376e0 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -48,11 +48,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index c5fdc53b6e41..19668672ab37 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -27,11 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
 	return 0;
 }
 
-static inline pte_t huge_pte_wrprotect(pte_t pte)
-{
-	return pte_wrprotect(pte);
-}
-
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 2fc3d68424e9..cd9697672b79 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -80,4 +80,11 @@ static inline int huge_pte_none(pte_t pte)
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT
+static inline pte_t huge_pte_wrprotect(pte_t pte)
+{
+	return pte_wrprotect(pte);
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 08/11] hugetlb: Introduce generic version of prepare_hugepage_range

[Alexandre Ghiti]

arm, arm64, powerpc, sparc, x86 architectures use the same version of
prepare_hugepage_range, so move this generic implementation into
asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb.h     | 11 -----------
 arch/arm64/include/asm/hugetlb.h   | 11 -----------
 arch/ia64/include/asm/hugetlb.h    |  1 +
 arch/mips/include/asm/hugetlb.h    |  1 +
 arch/parisc/include/asm/hugetlb.h  |  1 +
 arch/powerpc/include/asm/hugetlb.h | 15 ---------------
 arch/sh/include/asm/hugetlb.h      |  1 +
 arch/sparc/include/asm/hugetlb.h   | 16 ----------------
 arch/x86/include/asm/hugetlb.h     | 15 ---------------
 include/asm-generic/hugetlb.h      | 15 +++++++++++++++
 10 files changed, 19 insertions(+), 68 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
index 1e718a626ef9..34fb401efe81 100644
--- a/arch/arm/include/asm/hugetlb.h
+++ b/arch/arm/include/asm/hugetlb.h
@@ -32,17 +32,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-static inline int prepare_hugepage_range(struct file *file,
-					 unsigned long addr, unsigned long len)
-{
-	struct hstate *h = hstate_file(file);
-	if (len & ~huge_page_mask(h))
-		return -EINVAL;
-	if (addr & ~huge_page_mask(h))
-		return -EINVAL;
-	return 0;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 	clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 1fd64ebf0cd7..3e7f6e69b28d 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -31,17 +31,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-static inline int prepare_hugepage_range(struct file *file,
-					 unsigned long addr, unsigned long len)
-{
-	struct hstate *h = hstate_file(file);
-	if (len & ~huge_page_mask(h))
-		return -EINVAL;
-	if (addr & ~huge_page_mask(h))
-		return -EINVAL;
-	return 0;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 	clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index 82fe3d7a38d9..cbe296271030 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -9,6 +9,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
 			    unsigned long end, unsigned long floor,
 			    unsigned long ceiling);
 
+#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
 int prepare_hugepage_range(struct file *file,
 			unsigned long addr, unsigned long len);
 
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index b3d6bb53ee6e..6ff2531cfb1d 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -18,6 +18,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
+#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
 static inline int prepare_hugepage_range(struct file *file,
 					 unsigned long addr,
 					 unsigned long len)
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 5a102d7251e4..fb7e0fd858a3 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -22,6 +22,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
  * If the arch doesn't supply something else, assume that hugepage
  * size aligned regions are ok without further preparation.
  */
+#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
 static inline int prepare_hugepage_range(struct file *file,
 			unsigned long addr, unsigned long len)
 {
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 7123599089c6..69c14ecac133 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -117,21 +117,6 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
 			    unsigned long end, unsigned long floor,
 			    unsigned long ceiling);
 
-/*
- * If the arch doesn't supply something else, assume that hugepage
- * size aligned regions are ok without further preparation.
- */
-static inline int prepare_hugepage_range(struct file *file,
-			unsigned long addr, unsigned long len)
-{
-	struct hstate *h = hstate_file(file);
-	if (len & ~huge_page_mask(h))
-		return -EINVAL;
-	if (addr & ~huge_page_mask(h))
-		return -EINVAL;
-	return 0;
-}
-
 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 					    unsigned long addr, pte_t *ptep)
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index 54f65094efe6..f1bbd255ee43 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -15,6 +15,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
  * If the arch doesn't supply something else, assume that hugepage
  * size aligned regions are ok without further preparation.
  */
+#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
 static inline int prepare_hugepage_range(struct file *file,
 			unsigned long addr, unsigned long len)
 {
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index f661362376e0..2101ea217f33 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -26,22 +26,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-/*
- * If the arch doesn't supply something else, assume that hugepage
- * size aligned regions are ok without further preparation.
- */
-static inline int prepare_hugepage_range(struct file *file,
-			unsigned long addr, unsigned long len)
-{
-	struct hstate *h = hstate_file(file);
-
-	if (len & ~huge_page_mask(h))
-		return -EINVAL;
-	if (addr & ~huge_page_mask(h))
-		return -EINVAL;
-	return 0;
-}
-
 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep)
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 19668672ab37..2e5117d37c7d 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -12,21 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-/*
- * If the arch doesn't supply something else, assume that hugepage
- * size aligned regions are ok without further preparation.
- */
-static inline int prepare_hugepage_range(struct file *file,
-			unsigned long addr, unsigned long len)
-{
-	struct hstate *h = hstate_file(file);
-	if (len & ~huge_page_mask(h))
-		return -EINVAL;
-	if (addr & ~huge_page_mask(h))
-		return -EINVAL;
-	return 0;
-}
-
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index cd9697672b79..6c0c8b0c71e0 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -87,4 +87,19 @@ static inline pte_t huge_pte_wrprotect(pte_t pte)
 }
 #endif
 
+#ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
+static inline int prepare_hugepage_range(struct file *file,
+		unsigned long addr, unsigned long len)
+{
+	struct hstate *h = hstate_file(file);
+
+	if (len & ~huge_page_mask(h))
+		return -EINVAL;
+	if (addr & ~huge_page_mask(h))
+		return -EINVAL;
+
+	return 0;
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 09/11] hugetlb: Introduce generic version of huge_ptep_set_wrprotect

[Alexandre Ghiti]

arm, ia64, mips, sh, x86 architectures use the same version
of huge_ptep_set_wrprotect, so move this generic implementation into
asm-generic/hugetlb.h.
Note: powerpc uses twice for book3s/32 and nohash/32 the same version as
the above architectures, but the modification was not straightforward
and hence has not been done.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb-3level.h        | 6 ------
 arch/arm64/include/asm/hugetlb.h             | 1 +
 arch/ia64/include/asm/hugetlb.h              | 6 ------
 arch/mips/include/asm/hugetlb.h              | 6 ------
 arch/parisc/include/asm/hugetlb.h            | 1 +
 arch/powerpc/include/asm/book3s/32/pgtable.h | 2 ++
 arch/powerpc/include/asm/book3s/64/pgtable.h | 1 +
 arch/powerpc/include/asm/nohash/32/pgtable.h | 2 ++
 arch/powerpc/include/asm/nohash/64/pgtable.h | 1 +
 arch/sh/include/asm/hugetlb.h                | 6 ------
 arch/sparc/include/asm/hugetlb.h             | 1 +
 arch/x86/include/asm/hugetlb.h               | 6 ------
 include/asm-generic/hugetlb.h                | 8 ++++++++
 13 files changed, 17 insertions(+), 30 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index b897541520ef..8247cd6a2ac6 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
 	return retval;
 }
 
-static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
-					   unsigned long addr, pte_t *ptep)
-{
-	ptep_set_wrprotect(mm, addr, ptep);
-}
-
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty)
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 3e7f6e69b28d..f4f69ae5466e 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -48,6 +48,7 @@ extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
 extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
 				     unsigned long addr, pte_t *ptep);
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
 				    unsigned long addr, pte_t *ptep);
 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index cbe296271030..49d1f7949f3a 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -27,12 +27,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
-					   unsigned long addr, pte_t *ptep)
-{
-	ptep_set_wrprotect(mm, addr, ptep);
-}
-
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty)
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 6ff2531cfb1d..3dcf5debf8c4 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -63,12 +63,6 @@ static inline int huge_pte_none(pte_t pte)
 	return !val || (val == (unsigned long)invalid_pte_table);
 }
 
-static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
-					   unsigned long addr, pte_t *ptep)
-{
-	ptep_set_wrprotect(mm, addr, ptep);
-}
-
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr,
 					     pte_t *ptep, pte_t pte,
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index fb7e0fd858a3..9c3950ca2974 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -39,6 +39,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep);
 
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h
index 02f5acd7ccc4..d2cd1d0226e9 100644
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/32/pgtable.h
@@ -228,6 +228,8 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 {
 	pte_update(ptep, (_PAGE_RW | _PAGE_HWWRITE), _PAGE_RO);
 }
+
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 42aafba7a308..7d957f7c47cd 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -451,6 +451,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 		pte_update(mm, addr, ptep, 0, _PAGE_PRIVILEGED, 0);
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
index 7c46a98cc7f4..f39e200d9591 100644
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -249,6 +249,8 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 {
 	pte_update(ptep, (_PAGE_RW | _PAGE_HWWRITE), _PAGE_RO);
 }
+
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index dd0c7236208f..69fbf7e9b4db 100644
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -238,6 +238,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 	pte_update(mm, addr, ptep, _PAGE_RW, 0, 0);
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index f1bbd255ee43..8df4004977b9 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -32,12 +32,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
-					   unsigned long addr, pte_t *ptep)
-{
-	ptep_set_wrprotect(mm, addr, ptep);
-}
-
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty)
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 2101ea217f33..c41754a113f3 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -32,6 +32,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 2e5117d37c7d..de370836a17d 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -12,12 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
-					   unsigned long addr, pte_t *ptep)
-{
-	ptep_set_wrprotect(mm, addr, ptep);
-}
-
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty)
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 6c0c8b0c71e0..9b9039845278 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -102,4 +102,12 @@ static inline int prepare_hugepage_range(struct file *file,
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
+static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
+		unsigned long addr, pte_t *ptep)
+{
+	ptep_set_wrprotect(mm, addr, ptep);
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 10/11] hugetlb: Introduce generic version of huge_ptep_set_access_flags

[Alexandre Ghiti]

arm, ia64, sh, x86 architectures use the same version
of huge_ptep_set_access_flags, so move this generic implementation
into asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb-3level.h | 7 -------
 arch/arm64/include/asm/hugetlb.h      | 1 +
 arch/ia64/include/asm/hugetlb.h       | 7 -------
 arch/mips/include/asm/hugetlb.h       | 1 +
 arch/parisc/include/asm/hugetlb.h     | 1 +
 arch/powerpc/include/asm/hugetlb.h    | 1 +
 arch/sh/include/asm/hugetlb.h         | 7 -------
 arch/sparc/include/asm/hugetlb.h      | 1 +
 arch/x86/include/asm/hugetlb.h        | 7 -------
 include/asm-generic/hugetlb.h         | 9 +++++++++
 10 files changed, 14 insertions(+), 28 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index 8247cd6a2ac6..54e4b097b1f5 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -37,11 +37,4 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
 	return retval;
 }
 
-static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
-					     unsigned long addr, pte_t *ptep,
-					     pte_t pte, int dirty)
-{
-	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
-}
-
 #endif /* _ASM_ARM_HUGETLB_3LEVEL_H */
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index f4f69ae5466e..80887abcef7f 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -42,6 +42,7 @@ extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
 extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
 			    pte_t *ptep, pte_t pte);
+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 				      unsigned long addr, pte_t *ptep,
 				      pte_t pte, int dirty);
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index 49d1f7949f3a..e9b42750fdf5 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -27,13 +27,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
-					     unsigned long addr, pte_t *ptep,
-					     pte_t pte, int dirty)
-{
-	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
-}
-
 static inline pte_t huge_ptep_get(pte_t *ptep)
 {
 	return *ptep;
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 3dcf5debf8c4..120adc3b2ffd 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -63,6 +63,7 @@ static inline int huge_pte_none(pte_t pte)
 	return !val || (val == (unsigned long)invalid_pte_table);
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr,
 					     pte_t *ptep, pte_t pte,
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 9c3950ca2974..165b4e5a6f32 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -43,6 +43,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep);
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
 int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty);
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 69c14ecac133..658bf7136a3c 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -137,6 +137,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 	flush_hugetlb_page(vma, addr);
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
 extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 				      unsigned long addr, pte_t *ptep,
 				      pte_t pte, int dirty);
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index 8df4004977b9..c87195ae0cfa 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -32,13 +32,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
-					     unsigned long addr, pte_t *ptep,
-					     pte_t pte, int dirty)
-{
-	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
-}
-
 static inline pte_t huge_ptep_get(pte_t *ptep)
 {
 	return *ptep;
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index c41754a113f3..028a1465fbe7 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -40,6 +40,7 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
 }
 
+#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty)
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index de370836a17d..1df8944904c6 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -12,13 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
-					     unsigned long addr, pte_t *ptep,
-					     pte_t pte, int dirty)
-{
-	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
-}
-
 static inline pte_t huge_ptep_get(pte_t *ptep)
 {
 	return *ptep;
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index 9b9039845278..f3c99a03ee83 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -110,4 +110,13 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
+static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
+		unsigned long addr, pte_t *ptep,
+		pte_t pte, int dirty)
+{
+	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

[PATCH v4 11/11] hugetlb: Introduce generic version of huge_ptep_get

[Alexandre Ghiti]

ia64, mips, parisc, powerpc, sh, sparc, x86 architectures use the
same version of huge_ptep_get, so move this generic implementation into
asm-generic/hugetlb.h.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/arm/include/asm/hugetlb-3level.h | 1 +
 arch/arm64/include/asm/hugetlb.h      | 1 +
 arch/ia64/include/asm/hugetlb.h       | 5 -----
 arch/mips/include/asm/hugetlb.h       | 5 -----
 arch/parisc/include/asm/hugetlb.h     | 5 -----
 arch/powerpc/include/asm/hugetlb.h    | 5 -----
 arch/sh/include/asm/hugetlb.h         | 5 -----
 arch/sparc/include/asm/hugetlb.h      | 5 -----
 arch/x86/include/asm/hugetlb.h        | 5 -----
 include/asm-generic/hugetlb.h         | 7 +++++++
 10 files changed, 9 insertions(+), 35 deletions(-)

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index 54e4b097b1f5..0d9f3918fa7e 100644
--- a/arch/arm/include/asm/hugetlb-3level.h
+++ b/arch/arm/include/asm/hugetlb-3level.h
@@ -29,6 +29,7 @@
  * ptes.
  * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
  */
+#define __HAVE_ARCH_HUGE_PTEP_GET
 static inline pte_t huge_ptep_get(pte_t *ptep)
 {
 	pte_t retval = *ptep;
diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 80887abcef7f..fb6609875455 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -20,6 +20,7 @@
 
 #include <asm/page.h>
 
+#define __HAVE_ARCH_HUGE_PTEP_GET
 static inline pte_t huge_ptep_get(pte_t *ptep)
 {
 	return READ_ONCE(*ptep);
diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
index e9b42750fdf5..36cc0396b214 100644
--- a/arch/ia64/include/asm/hugetlb.h
+++ b/arch/ia64/include/asm/hugetlb.h
@@ -27,11 +27,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
-	return *ptep;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index 120adc3b2ffd..425bb6fc3bda 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -82,11 +82,6 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 	return changed;
 }
 
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
-	return *ptep;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
index 165b4e5a6f32..7cb595dcb7d7 100644
--- a/arch/parisc/include/asm/hugetlb.h
+++ b/arch/parisc/include/asm/hugetlb.h
@@ -48,11 +48,6 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty);
 
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
-	return *ptep;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 658bf7136a3c..33a2d9e3ea9e 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -142,11 +142,6 @@ extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 				      unsigned long addr, pte_t *ptep,
 				      pte_t pte, int dirty);
 
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
-	return *ptep;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
index c87195ae0cfa..6f025fe18146 100644
--- a/arch/sh/include/asm/hugetlb.h
+++ b/arch/sh/include/asm/hugetlb.h
@@ -32,11 +32,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
 {
 }
 
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
-	return *ptep;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 	clear_bit(PG_dcache_clean, &page->flags);
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
index 028a1465fbe7..3963f80d1cb3 100644
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -53,11 +53,6 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 	return changed;
 }
 
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
-	return *ptep;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
index 1df8944904c6..c97b34a29054 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -12,11 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
 	return 0;
 }
 
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
-	return *ptep;
-}
-
 static inline void arch_clear_hugepage_flags(struct page *page)
 {
 }
diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
index f3c99a03ee83..71d7b77eea50 100644
--- a/include/asm-generic/hugetlb.h
+++ b/include/asm-generic/hugetlb.h
@@ -119,4 +119,11 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 }
 #endif
 
+#ifndef __HAVE_ARCH_HUGE_PTEP_GET
+static inline pte_t huge_ptep_get(pte_t *ptep)
+{
+	return *ptep;
+}
+#endif
+
 #endif /* _ASM_GENERIC_HUGETLB_H */
-- 
2.16.2

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Michal Hocko]

[CC hugetlb guys - http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]

On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
> In order to reduce copy/paste of functions across architectures and then
> make riscv hugetlb port (and future ports) simpler and smaller, this
> patchset intends to factorize the numerous hugetlb primitives that are
> defined across all the architectures.
> 
> Except for prepare_hugepage_range, this patchset moves the versions that
> are just pass-through to standard pte primitives into
> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
> 
> s390 architecture has not been tackled in this serie since it does not
> use asm-generic/hugetlb.h at all.
> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
> 
> This patchset has been compiled on x86 only. 
> 
> Changelog:
> 
> v4:
>   Fix powerpc build error due to misplacing of #include
>   <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>   pointed by Christophe Leroy.
> 
> v1, v2, v3:
>   Same version, just problems with email provider and misuse of
>   --batch-size option of git send-email
> 
> Alexandre Ghiti (11):
>   hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>   hugetlb: Introduce generic version of hugetlb_free_pgd_range
>   hugetlb: Introduce generic version of set_huge_pte_at
>   hugetlb: Introduce generic version of huge_ptep_get_and_clear
>   hugetlb: Introduce generic version of huge_ptep_clear_flush
>   hugetlb: Introduce generic version of huge_pte_none
>   hugetlb: Introduce generic version of huge_pte_wrprotect
>   hugetlb: Introduce generic version of prepare_hugepage_range
>   hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>   hugetlb: Introduce generic version of huge_ptep_set_access_flags
>   hugetlb: Introduce generic version of huge_ptep_get
> 
>  arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>  arch/arm/include/asm/hugetlb.h               | 33 +----------
>  arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>  arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>  arch/mips/include/asm/hugetlb.h              | 40 +++----------
>  arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>  arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>  arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>  arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>  arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>  arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>  arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>  arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>  arch/x86/include/asm/hugetlb.h               | 72 +----------------------
>  include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
>  15 files changed, 143 insertions(+), 384 deletions(-)
> 
> -- 
> 2.16.2

-- 
Michal Hocko
SUSE Labs

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alex Ghiti]

Does anyone have any suggestion about those patches ?

On 07/09/2018 02:16 PM, Michal Hocko wrote:
> [CC hugetlb guys - http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]
>
> On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
>> In order to reduce copy/paste of functions across architectures and then
>> make riscv hugetlb port (and future ports) simpler and smaller, this
>> patchset intends to factorize the numerous hugetlb primitives that are
>> defined across all the architectures.
>>
>> Except for prepare_hugepage_range, this patchset moves the versions that
>> are just pass-through to standard pte primitives into
>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>
>> s390 architecture has not been tackled in this serie since it does not
>> use asm-generic/hugetlb.h at all.
>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>
>> This patchset has been compiled on x86 only.
>>
>> Changelog:
>>
>> v4:
>>    Fix powerpc build error due to misplacing of #include
>>    <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>>    pointed by Christophe Leroy.
>>
>> v1, v2, v3:
>>    Same version, just problems with email provider and misuse of
>>    --batch-size option of git send-email
>>
>> Alexandre Ghiti (11):
>>    hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>>    hugetlb: Introduce generic version of hugetlb_free_pgd_range
>>    hugetlb: Introduce generic version of set_huge_pte_at
>>    hugetlb: Introduce generic version of huge_ptep_get_and_clear
>>    hugetlb: Introduce generic version of huge_ptep_clear_flush
>>    hugetlb: Introduce generic version of huge_pte_none
>>    hugetlb: Introduce generic version of huge_pte_wrprotect
>>    hugetlb: Introduce generic version of prepare_hugepage_range
>>    hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>>    hugetlb: Introduce generic version of huge_ptep_set_access_flags
>>    hugetlb: Introduce generic version of huge_ptep_get
>>
>>   arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>>   arch/arm/include/asm/hugetlb.h               | 33 +----------
>>   arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>>   arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>>   arch/mips/include/asm/hugetlb.h              | 40 +++----------
>>   arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>>   arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>>   arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>>   arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>>   arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>>   arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>>   arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>>   arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>>   arch/x86/include/asm/hugetlb.h               | 72 +----------------------
>>   include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
>>   15 files changed, 143 insertions(+), 384 deletions(-)
>>
>> -- 
>> 2.16.2

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Mike Kravetz]

On 07/20/2018 11:37 AM, Alex Ghiti wrote:
> Does anyone have any suggestion about those patches ?

I only took a quick look.  From the hugetlb perspective, I like the
idea of moving routines to a common file.  If any of the arch owners
(or anyone else) agree, I can do a review of the series.
-- 
Mike Kravetz

> On 07/09/2018 02:16 PM, Michal Hocko wrote:
>> [CC hugetlb guys - http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]
>>
>> On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
>>> In order to reduce copy/paste of functions across architectures and then
>>> make riscv hugetlb port (and future ports) simpler and smaller, this
>>> patchset intends to factorize the numerous hugetlb primitives that are
>>> defined across all the architectures.
>>>
>>> Except for prepare_hugepage_range, this patchset moves the versions that
>>> are just pass-through to standard pte primitives into
>>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>>
>>> s390 architecture has not been tackled in this serie since it does not
>>> use asm-generic/hugetlb.h at all.
>>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>>
>>> This patchset has been compiled on x86 only.
>>>
>>> Changelog:
>>>
>>> v4:
>>>    Fix powerpc build error due to misplacing of #include
>>>    <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>>>    pointed by Christophe Leroy.
>>>
>>> v1, v2, v3:
>>>    Same version, just problems with email provider and misuse of
>>>    --batch-size option of git send-email
>>>
>>> Alexandre Ghiti (11):
>>>    hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>>>    hugetlb: Introduce generic version of hugetlb_free_pgd_range
>>>    hugetlb: Introduce generic version of set_huge_pte_at
>>>    hugetlb: Introduce generic version of huge_ptep_get_and_clear
>>>    hugetlb: Introduce generic version of huge_ptep_clear_flush
>>>    hugetlb: Introduce generic version of huge_pte_none
>>>    hugetlb: Introduce generic version of huge_pte_wrprotect
>>>    hugetlb: Introduce generic version of prepare_hugepage_range
>>>    hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>>>    hugetlb: Introduce generic version of huge_ptep_set_access_flags
>>>    hugetlb: Introduce generic version of huge_ptep_get
>>>
>>>   arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>>>   arch/arm/include/asm/hugetlb.h               | 33 +----------
>>>   arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>>>   arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>>>   arch/mips/include/asm/hugetlb.h              | 40 +++----------
>>>   arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>>>   arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>>>   arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>>>   arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>>>   arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>>>   arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>>>   arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>>>   arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>>>   arch/x86/include/asm/hugetlb.h               | 72 +----------------------
>>>   include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
>>>   15 files changed, 143 insertions(+), 384 deletions(-)
>>>
>>> -- 
>>> 2.16.2
> 

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Michael Ellerman]

Alex Ghiti <alex@ghiti.fr> writes:

> Does anyone have any suggestion about those patches ?

Cross compiling it for some non-x86 arches would be a good start :)

There are cross compilers available here:

  https://mirrors.edge.kernel.org/pub/tools/crosstool/


cheers

> On 07/09/2018 02:16 PM, Michal Hocko wrote:
>> [CC hugetlb guys - http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]
>>
>> On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
>>> In order to reduce copy/paste of functions across architectures and then
>>> make riscv hugetlb port (and future ports) simpler and smaller, this
>>> patchset intends to factorize the numerous hugetlb primitives that are
>>> defined across all the architectures.
>>>
>>> Except for prepare_hugepage_range, this patchset moves the versions that
>>> are just pass-through to standard pte primitives into
>>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>>
>>> s390 architecture has not been tackled in this serie since it does not
>>> use asm-generic/hugetlb.h at all.
>>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>>
>>> This patchset has been compiled on x86 only.
>>>
>>> Changelog:
>>>
>>> v4:
>>>    Fix powerpc build error due to misplacing of #include
>>>    <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>>>    pointed by Christophe Leroy.
>>>
>>> v1, v2, v3:
>>>    Same version, just problems with email provider and misuse of
>>>    --batch-size option of git send-email
>>>
>>> Alexandre Ghiti (11):
>>>    hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>>>    hugetlb: Introduce generic version of hugetlb_free_pgd_range
>>>    hugetlb: Introduce generic version of set_huge_pte_at
>>>    hugetlb: Introduce generic version of huge_ptep_get_and_clear
>>>    hugetlb: Introduce generic version of huge_ptep_clear_flush
>>>    hugetlb: Introduce generic version of huge_pte_none
>>>    hugetlb: Introduce generic version of huge_pte_wrprotect
>>>    hugetlb: Introduce generic version of prepare_hugepage_range
>>>    hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>>>    hugetlb: Introduce generic version of huge_ptep_set_access_flags
>>>    hugetlb: Introduce generic version of huge_ptep_get
>>>
>>>   arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>>>   arch/arm/include/asm/hugetlb.h               | 33 +----------
>>>   arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>>>   arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>>>   arch/mips/include/asm/hugetlb.h              | 40 +++----------
>>>   arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>>>   arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>>>   arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>>>   arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>>>   arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>>>   arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>>>   arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>>>   arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>>>   arch/x86/include/asm/hugetlb.h               | 72 +----------------------
>>>   include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
>>>   15 files changed, 143 insertions(+), 384 deletions(-)
>>>
>>> -- 
>>> 2.16.2

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alex Ghiti]

Ok will do and report when done.

Thanks for your feedback,

Alex

On 07/23/2018 02:00 PM, Michael Ellerman wrote:
> Alex Ghiti <alex@ghiti.fr> writes:
>
>> Does anyone have any suggestion about those patches ?
> Cross compiling it for some non-x86 arches would be a good start :)
>
> There are cross compilers available here:
>
>    https://mirrors.edge.kernel.org/pub/tools/crosstool/
>
>
> cheers
>
>> On 07/09/2018 02:16 PM, Michal Hocko wrote:
>>> [CC hugetlb guys - http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]
>>>
>>> On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
>>>> In order to reduce copy/paste of functions across architectures and then
>>>> make riscv hugetlb port (and future ports) simpler and smaller, this
>>>> patchset intends to factorize the numerous hugetlb primitives that are
>>>> defined across all the architectures.
>>>>
>>>> Except for prepare_hugepage_range, this patchset moves the versions that
>>>> are just pass-through to standard pte primitives into
>>>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>>>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>>>
>>>> s390 architecture has not been tackled in this serie since it does not
>>>> use asm-generic/hugetlb.h at all.
>>>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>>>
>>>> This patchset has been compiled on x86 only.
>>>>
>>>> Changelog:
>>>>
>>>> v4:
>>>>     Fix powerpc build error due to misplacing of #include
>>>>     <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>>>>     pointed by Christophe Leroy.
>>>>
>>>> v1, v2, v3:
>>>>     Same version, just problems with email provider and misuse of
>>>>     --batch-size option of git send-email
>>>>
>>>> Alexandre Ghiti (11):
>>>>     hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>>>>     hugetlb: Introduce generic version of hugetlb_free_pgd_range
>>>>     hugetlb: Introduce generic version of set_huge_pte_at
>>>>     hugetlb: Introduce generic version of huge_ptep_get_and_clear
>>>>     hugetlb: Introduce generic version of huge_ptep_clear_flush
>>>>     hugetlb: Introduce generic version of huge_pte_none
>>>>     hugetlb: Introduce generic version of huge_pte_wrprotect
>>>>     hugetlb: Introduce generic version of prepare_hugepage_range
>>>>     hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>>>>     hugetlb: Introduce generic version of huge_ptep_set_access_flags
>>>>     hugetlb: Introduce generic version of huge_ptep_get
>>>>
>>>>    arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>>>>    arch/arm/include/asm/hugetlb.h               | 33 +----------
>>>>    arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>>>>    arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>>>>    arch/mips/include/asm/hugetlb.h              | 40 +++----------
>>>>    arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>>>>    arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>>>>    arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>>>>    arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>>>>    arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>>>>    arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>>>>    arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>>>>    arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>>>>    arch/x86/include/asm/hugetlb.h               | 72 +----------------------
>>>>    include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
>>>>    15 files changed, 143 insertions(+), 384 deletions(-)
>>>>
>>>> -- 
>>>> 2.16.2

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Paul Burton]

Hi Alexandre,

On Thu, Jul 05, 2018 at 11:07:05AM +0000, Alexandre Ghiti wrote:
> In order to reduce copy/paste of functions across architectures and then
> make riscv hugetlb port (and future ports) simpler and smaller, this
> patchset intends to factorize the numerous hugetlb primitives that are
> defined across all the architectures.
> 
> Except for prepare_hugepage_range, this patchset moves the versions that
> are just pass-through to standard pte primitives into
> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
> 
> s390 architecture has not been tackled in this serie since it does not
> use asm-generic/hugetlb.h at all.
> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
> 
> This patchset has been compiled on x86 only. 

For MIPS these look good - I don't see any issues & they pass a build
test (using cavium_octeon_defconfig which enables huge pages), so:

    Acked-by: Paul Burton <paul.burton@mips.com> # MIPS parts

Thanks,
    Paul

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alexandre Ghiti]

Hi Paul,

Thanks for having tested it, I remove mips from my list.

Thanks again,

Alex


On 07/25/2018 02:34 AM, Paul Burton wrote:
> Hi Alexandre,
>
> On Thu, Jul 05, 2018 at 11:07:05AM +0000, Alexandre Ghiti wrote:
>> In order to reduce copy/paste of functions across architectures and then
>> make riscv hugetlb port (and future ports) simpler and smaller, this
>> patchset intends to factorize the numerous hugetlb primitives that are
>> defined across all the architectures.
>>
>> Except for prepare_hugepage_range, this patchset moves the versions that
>> are just pass-through to standard pte primitives into
>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>
>> s390 architecture has not been tackled in this serie since it does not
>> use asm-generic/hugetlb.h at all.
>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>
>> This patchset has been compiled on x86 only.
> For MIPS these look good - I don't see any issues & they pass a build
> test (using cavium_octeon_defconfig which enables huge pages), so:
>
>      Acked-by: Paul Burton <paul.burton@mips.com> # MIPS parts
>
> Thanks,
>      Paul

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alex Ghiti]

Hi everyone,

This is the result of the build for all arches tackled in this series 
rebased on 4.18-rc6:

arm:
         versatile_defconfig: without huge page OK
         keystone_defconfig: with huge page OK
arm64:
         defconfig: with huge page OK
ia64:
         generic_defconfig: with huge page OK
mips:
         Paul Burton tested cavium octeon with huge page OK
parisc:
         generic-64bit_defconfig: with huge page does not link
         generic-64bit_defconfig: without huge page does not link
         BUT not because of this series, any feedback welcome.
powerpc:
         ppc64_defconfig: without huge page OK
         ppc64_defconfig: with huge page OK
sh:
         dreamcast_defconfig: with huge page OK
sparc:
         sparc32_defconfig: without huge page OK
sparc64:
         sparc64_defconfig: with huge page OK
x86:
         with huge page OK

Alex

On 07/23/2018 02:00 PM, Michael Ellerman wrote:
> Alex Ghiti <alex@ghiti.fr> writes:
>
>> Does anyone have any suggestion about those patches ?
> Cross compiling it for some non-x86 arches would be a good start :)
>
> There are cross compilers available here:
>
>    https://mirrors.edge.kernel.org/pub/tools/crosstool/
>
>
> cheers
>
>> On 07/09/2018 02:16 PM, Michal Hocko wrote:
>>> [CC hugetlb guys - http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]
>>>
>>> On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
>>>> In order to reduce copy/paste of functions across architectures and then
>>>> make riscv hugetlb port (and future ports) simpler and smaller, this
>>>> patchset intends to factorize the numerous hugetlb primitives that are
>>>> defined across all the architectures.
>>>>
>>>> Except for prepare_hugepage_range, this patchset moves the versions that
>>>> are just pass-through to standard pte primitives into
>>>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>>>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>>>
>>>> s390 architecture has not been tackled in this serie since it does not
>>>> use asm-generic/hugetlb.h at all.
>>>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>>>
>>>> This patchset has been compiled on x86 only.
>>>>
>>>> Changelog:
>>>>
>>>> v4:
>>>>     Fix powerpc build error due to misplacing of #include
>>>>     <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>>>>     pointed by Christophe Leroy.
>>>>
>>>> v1, v2, v3:
>>>>     Same version, just problems with email provider and misuse of
>>>>     --batch-size option of git send-email
>>>>
>>>> Alexandre Ghiti (11):
>>>>     hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>>>>     hugetlb: Introduce generic version of hugetlb_free_pgd_range
>>>>     hugetlb: Introduce generic version of set_huge_pte_at
>>>>     hugetlb: Introduce generic version of huge_ptep_get_and_clear
>>>>     hugetlb: Introduce generic version of huge_ptep_clear_flush
>>>>     hugetlb: Introduce generic version of huge_pte_none
>>>>     hugetlb: Introduce generic version of huge_pte_wrprotect
>>>>     hugetlb: Introduce generic version of prepare_hugepage_range
>>>>     hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>>>>     hugetlb: Introduce generic version of huge_ptep_set_access_flags
>>>>     hugetlb: Introduce generic version of huge_ptep_get
>>>>
>>>>    arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>>>>    arch/arm/include/asm/hugetlb.h               | 33 +----------
>>>>    arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>>>>    arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>>>>    arch/mips/include/asm/hugetlb.h              | 40 +++----------
>>>>    arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>>>>    arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>>>>    arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>>>>    arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>>>>    arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>>>>    arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>>>>    arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>>>>    arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>>>>    arch/x86/include/asm/hugetlb.h               | 72 +----------------------
>>>>    include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
>>>>    15 files changed, 143 insertions(+), 384 deletions(-)
>>>>
>>>> -- 
>>>> 2.16.2

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Michael Ellerman]

Mike Kravetz <mike.kravetz@oracle.com> writes:

> On 07/20/2018 11:37 AM, Alex Ghiti wrote:
>> Does anyone have any suggestion about those patches ?
>
> I only took a quick look.  From the hugetlb perspective, I like the
> idea of moving routines to a common file.  If any of the arch owners
> (or anyone else) agree, I can do a review of the series.

The conversions look pretty good to me. If you want to give it a review
then from my point of view it could go in -mm to shake out any bugs.

cheers

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Helge Deller]

* Alex Ghiti <alex@ghiti.fr>:
> This is the result of the build for all arches tackled in this series
> rebased on 4.18-rc6:
> ...
> parisc:
>         generic-64bit_defconfig: with huge page does not link
>         generic-64bit_defconfig: without huge page does not link
>         BUT not because of this series, any feedback welcome.
Strange, but I will check that later....

Anyway, I applied your v4-patch to my parisc64 tree, built the kernel,
started it and ran some hugetlb LTP testcases sucessfully.
So, please add:

Tested-by: Helge Deller <deller@gmx.de> # parisc

Helge

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[LEROY Christophe]

Alex Ghiti <alex@ghiti.fr> a écrit :

> Hi everyone,
>
> This is the result of the build for all arches tackled in this  
> series rebased on 4.18-rc6:
>
> arm:
>         versatile_defconfig: without huge page OK
>         keystone_defconfig: with huge page OK
> arm64:
>         defconfig: with huge page OK
> ia64:
>         generic_defconfig: with huge page OK
> mips:
>         Paul Burton tested cavium octeon with huge page OK
> parisc:
>         generic-64bit_defconfig: with huge page does not link
>         generic-64bit_defconfig: without huge page does not link
>         BUT not because of this series, any feedback welcome.
> powerpc:
>         ppc64_defconfig: without huge page OK
>         ppc64_defconfig: with huge page OK

Can you also test ppc32 both with and without hugepage (mpc885_ads_defconfig)

Thanks
Christophe

> sh:
>         dreamcast_defconfig: with huge page OK
> sparc:
>         sparc32_defconfig: without huge page OK
> sparc64:
>         sparc64_defconfig: with huge page OK
> x86:
>         with huge page OK
>
> Alex
>
> On 07/23/2018 02:00 PM, Michael Ellerman wrote:
>> Alex Ghiti <alex@ghiti.fr> writes:
>>
>>> Does anyone have any suggestion about those patches ?
>> Cross compiling it for some non-x86 arches would be a good start :)
>>
>> There are cross compilers available here:
>>
>>   https://mirrors.edge.kernel.org/pub/tools/crosstool/
>>
>>
>> cheers
>>
>>> On 07/09/2018 02:16 PM, Michal Hocko wrote:
>>>> [CC hugetlb guys -  
>>>> http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]
>>>>
>>>> On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
>>>>> In order to reduce copy/paste of functions across architectures and then
>>>>> make riscv hugetlb port (and future ports) simpler and smaller, this
>>>>> patchset intends to factorize the numerous hugetlb primitives that are
>>>>> defined across all the architectures.
>>>>>
>>>>> Except for prepare_hugepage_range, this patchset moves the versions that
>>>>> are just pass-through to standard pte primitives into
>>>>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>>>>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>>>>
>>>>> s390 architecture has not been tackled in this serie since it does not
>>>>> use asm-generic/hugetlb.h at all.
>>>>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>>>>
>>>>> This patchset has been compiled on x86 only.
>>>>>
>>>>> Changelog:
>>>>>
>>>>> v4:
>>>>>    Fix powerpc build error due to misplacing of #include
>>>>>    <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>>>>>    pointed by Christophe Leroy.
>>>>>
>>>>> v1, v2, v3:
>>>>>    Same version, just problems with email provider and misuse of
>>>>>    --batch-size option of git send-email
>>>>>
>>>>> Alexandre Ghiti (11):
>>>>>    hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>>>>>    hugetlb: Introduce generic version of hugetlb_free_pgd_range
>>>>>    hugetlb: Introduce generic version of set_huge_pte_at
>>>>>    hugetlb: Introduce generic version of huge_ptep_get_and_clear
>>>>>    hugetlb: Introduce generic version of huge_ptep_clear_flush
>>>>>    hugetlb: Introduce generic version of huge_pte_none
>>>>>    hugetlb: Introduce generic version of huge_pte_wrprotect
>>>>>    hugetlb: Introduce generic version of prepare_hugepage_range
>>>>>    hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>>>>>    hugetlb: Introduce generic version of huge_ptep_set_access_flags
>>>>>    hugetlb: Introduce generic version of huge_ptep_get
>>>>>
>>>>>   arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>>>>>   arch/arm/include/asm/hugetlb.h               | 33 +----------
>>>>>   arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>>>>>   arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>>>>>   arch/mips/include/asm/hugetlb.h              | 40 +++----------
>>>>>   arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>>>>>   arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>>>>>   arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>>>>>   arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>>>>>   arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>>>>>   arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>>>>>   arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>>>>>   arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>>>>>   arch/x86/include/asm/hugetlb.h               | 72  
>>>>> +----------------------
>>>>>   include/asm-generic/hugetlb.h                | 88  
>>>>> +++++++++++++++++++++++++++-
>>>>>   15 files changed, 143 insertions(+), 384 deletions(-)
>>>>>
>>>>> -- 
>>>>> 2.16.2

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alex Ghiti]

Hi Christophe,

Sorry, I should have done it already: with and without huge page 
activated, the build for mpc885_ads_defconfig is OK.

Thanks,

Alex

On 07/26/2018 03:13 PM, LEROY Christophe wrote:
> Alex Ghiti <alex@ghiti.fr> a écrit :
>
>> Hi everyone,
>>
>> This is the result of the build for all arches tackled in this series 
>> rebased on 4.18-rc6:
>>
>> arm:
>>         versatile_defconfig: without huge page OK
>>         keystone_defconfig: with huge page OK
>> arm64:
>>         defconfig: with huge page OK
>> ia64:
>>         generic_defconfig: with huge page OK
>> mips:
>>         Paul Burton tested cavium octeon with huge page OK
>> parisc:
>>         generic-64bit_defconfig: with huge page does not link
>>         generic-64bit_defconfig: without huge page does not link
>>         BUT not because of this series, any feedback welcome.
>> powerpc:
>>         ppc64_defconfig: without huge page OK
>>         ppc64_defconfig: with huge page OK
>
> Can you also test ppc32 both with and without hugepage 
> (mpc885_ads_defconfig)
>
> Thanks
> Christophe
>
>> sh:
>>         dreamcast_defconfig: with huge page OK
>> sparc:
>>         sparc32_defconfig: without huge page OK
>> sparc64:
>>         sparc64_defconfig: with huge page OK
>> x86:
>>         with huge page OK
>>
>> Alex
>>
>> On 07/23/2018 02:00 PM, Michael Ellerman wrote:
>>> Alex Ghiti <alex@ghiti.fr> writes:
>>>
>>>> Does anyone have any suggestion about those patches ?
>>> Cross compiling it for some non-x86 arches would be a good start :)
>>>
>>> There are cross compilers available here:
>>>
>>>   https://mirrors.edge.kernel.org/pub/tools/crosstool/
>>>
>>>
>>> cheers
>>>
>>>> On 07/09/2018 02:16 PM, Michal Hocko wrote:
>>>>> [CC hugetlb guys - 
>>>>> http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]
>>>>>
>>>>> On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
>>>>>> In order to reduce copy/paste of functions across architectures 
>>>>>> and then
>>>>>> make riscv hugetlb port (and future ports) simpler and smaller, this
>>>>>> patchset intends to factorize the numerous hugetlb primitives 
>>>>>> that are
>>>>>> defined across all the architectures.
>>>>>>
>>>>>> Except for prepare_hugepage_range, this patchset moves the 
>>>>>> versions that
>>>>>> are just pass-through to standard pte primitives into
>>>>>> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
>>>>>> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
>>>>>>
>>>>>> s390 architecture has not been tackled in this serie since it 
>>>>>> does not
>>>>>> use asm-generic/hugetlb.h at all.
>>>>>> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
>>>>>>
>>>>>> This patchset has been compiled on x86 only.
>>>>>>
>>>>>> Changelog:
>>>>>>
>>>>>> v4:
>>>>>>    Fix powerpc build error due to misplacing of #include
>>>>>>    <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>>>>>>    pointed by Christophe Leroy.
>>>>>>
>>>>>> v1, v2, v3:
>>>>>>    Same version, just problems with email provider and misuse of
>>>>>>    --batch-size option of git send-email
>>>>>>
>>>>>> Alexandre Ghiti (11):
>>>>>>    hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>>>>>>    hugetlb: Introduce generic version of hugetlb_free_pgd_range
>>>>>>    hugetlb: Introduce generic version of set_huge_pte_at
>>>>>>    hugetlb: Introduce generic version of huge_ptep_get_and_clear
>>>>>>    hugetlb: Introduce generic version of huge_ptep_clear_flush
>>>>>>    hugetlb: Introduce generic version of huge_pte_none
>>>>>>    hugetlb: Introduce generic version of huge_pte_wrprotect
>>>>>>    hugetlb: Introduce generic version of prepare_hugepage_range
>>>>>>    hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>>>>>>    hugetlb: Introduce generic version of huge_ptep_set_access_flags
>>>>>>    hugetlb: Introduce generic version of huge_ptep_get
>>>>>>
>>>>>>   arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>>>>>>   arch/arm/include/asm/hugetlb.h               | 33 +----------
>>>>>>   arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>>>>>>   arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>>>>>>   arch/mips/include/asm/hugetlb.h              | 40 +++----------
>>>>>>   arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>>>>>>   arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>>>>>>   arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>>>>>>   arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>>>>>>   arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>>>>>>   arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>>>>>>   arch/sh/include/asm/hugetlb.h                | 54 
>>>>>> ++---------------
>>>>>>   arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>>>>>>   arch/x86/include/asm/hugetlb.h               | 72 
>>>>>> +----------------------
>>>>>>   include/asm-generic/hugetlb.h                | 88 
>>>>>> +++++++++++++++++++++++++++-
>>>>>>   15 files changed, 143 insertions(+), 384 deletions(-)
>>>>>>
>>>>>> -- 
>>>>>> 2.16.2
>
>

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alex Ghiti]

Hi Helge,

Thanks for your tests.
In case it can help you, this is what I get when I try to build 
generic-64bit_defconfig (I truncated the output):

...

  LD      vmlinux.o
  MODPOST vmlinux.o
hppa64-linux-ld: init/main.o(.text+0x98): cannot reach strreplace
init/main.o: In function `initcall_blacklisted':
init/.tmp_main.o:(.text+0x98): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `strreplace' defined in .text section 
in lib/string.o
hppa64-linux-ld: init/main.o(.text+0xbc): cannot reach strcmp
init/.tmp_main.o:(.text+0xbc): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `strcmp' defined in .text section in 
lib/string.o
hppa64-linux-ld: init/main.o(.text+0x21c): cannot reach strcpy
init/main.o: In function `do_one_initcall':
(.text+0x21c): relocation truncated to fit: R_PARISC_PCREL22F against 
symbol `strcpy' defined in .text section in lib/string.o
hppa64-linux-ld: init/main.o(.text+0x250): cannot reach strlcat
(.text+0x250): relocation truncated to fit: R_PARISC_PCREL22F against 
symbol `strlcat' defined in .text section in lib/string.o
hppa64-linux-ld: init/main.o(.init.text+0x1d4): cannot reach strcmp
init/main.o: In function `do_early_param':
init/.tmp_main.o:(.init.text+0x1d4): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `strcmp' defined in .text section in 
lib/string.o
hppa64-linux-ld: init/main.o(.init.text+0x250): cannot reach strcmp
init/.tmp_main.o:(.init.text+0x250): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `strcmp' defined in .text section in 
lib/string.o
hppa64-linux-ld: init/main.o(.init.text+0x294): cannot reach strlen
init/main.o: In function `repair_env_string':
init/.tmp_main.o:(.init.text+0x294): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `strlen' defined in .text section in 
lib/string.o
hppa64-linux-ld: init/main.o(.init.text+0x2f0): cannot reach strlen
init/.tmp_main.o:(.init.text+0x2f0): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `strlen' defined in .text section in 
lib/string.o
hppa64-linux-ld: init/main.o(.init.text+0x308): cannot reach memmove
init/.tmp_main.o:(.init.text+0x308): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `memmove' defined in .text section in 
lib/string.o
hppa64-linux-ld: init/main.o(.init.text+0x454): cannot reach strlen
init/main.o: In function `unknown_bootoption':
init/.tmp_main.o:(.init.text+0x454): relocation truncated to fit: 
R_PARISC_PCREL22F against symbol `strlen' defined in .text section in 
lib/string.o
hppa64-linux-ld: init/main.o(.init.text+0x4dc): cannot reach strchr
init/.tmp_main.o:(.init.text+0x4dc): additional relocation overflows 
omitted from the output
hppa64-linux-ld: init/main.o(.init.text+0x638): cannot reach strncmp
hppa64-linux-ld: init/main.o(.init.text+0x694): cannot reach get_option
hppa64-linux-ld: init/main.o(.init.text+0x744): cannot reach strsep
hppa64-linux-ld: init/main.o(.init.text+0x798): cannot reach strlen
hppa64-linux-ld: init/main.o(.init.text+0x7d0): cannot reach strcpy
hppa64-linux-ld: init/main.o(.init.text+0x954): cannot reach strlcpy
hppa64-linux-ld: init/main.o(.init.text+0xab8): cannot reach strlen
hppa64-linux-ld: init/main.o(.init.text+0xafc): cannot reach strlen
hppa64-linux-ld: init/main.o(.init.text+0xb40): cannot reach strlen
hppa64-linux-ld: init/main.o(.init.text+0xb84): cannot reach strlen
hppa64-linux-ld: init/main.o(.init.text+0xbd0): cannot reach strcpy
hppa64-linux-ld: init/main.o(.init.text+0xbe8): cannot reach strcpy
hppa64-linux-ld: init/main.o(.init.text+0xc3c): cannot reach 
build_all_zonelists
hppa64-linux-ld: init/main.o(.init.text+0x1200): cannot reach unknown
hppa64-linux-ld: init/main.o(.init.text+0x1278): cannot reach 
wait_for_completion
hppa64-linux-ld: init/main.o(.init.text+0x12b0): cannot reach _raw_spin_lock
hppa64-linux-ld: init/main.o(.init.text+0x147c): cannot reach strcpy
hppa64-linux-ld: init/main.o(.ref.text+0x40): cannot reach kernel_thread
hppa64-linux-ld: init/main.o(.ref.text+0x60): cannot reach 
find_task_by_pid_ns
hppa64-linux-ld: init/main.o(.ref.text+0x98): cannot reach 
set_cpus_allowed_ptr
hppa64-linux-ld: init/main.o(.ref.text+0xbc): cannot reach kernel_thread
hppa64-linux-ld: init/main.o(.ref.text+0xd4): cannot reach 
find_task_by_pid_ns
hppa64-linux-ld: init/main.o(.ref.text+0x108): cannot reach complete
hppa64-linux-ld: init/main.o(.ref.text+0x128): cannot reach 
cpu_startup_entry
hppa64-linux-ld: init/main.o(.ref.text+0x164): cannot reach unknown
hppa64-linux-ld: init/main.o(.ref.text+0x174): cannot reach 
async_synchronize_full
hppa64-linux-ld: init/main.o(.ref.text+0x1a4): cannot reach 
rcu_barrier_sched
hppa64-linux-ld: init/main.o(.ref.text+0x1b4): cannot reach mark_rodata_ro
hppa64-linux-ld: init/main.o(.ref.text+0x1d4): cannot reach 
rcu_end_inkernel_boot
hppa64-linux-ld: init/main.o(.ref.text+0x1f4): cannot reach unknown
hppa64-linux-ld: init/main.o(.ref.text+0x218): cannot reach printk
hppa64-linux-ld: init/main.o(.ref.text+0x238): cannot reach unknown
hppa64-linux-ld: init/main.o(.ref.text+0x258): cannot reach panic
hppa64-linux-ld: init/main.o(.ref.text+0x268): cannot reach printk
hppa64-linux-ld: init/main.o(.ref.text+0x280): cannot reach unknown
hppa64-linux-ld: init/main.o(.ref.text+0x29c): cannot reach unknown
hppa64-linux-ld: init/main.o(.ref.text+0x2b8): cannot reach unknown
hppa64-linux-ld: init/main.o(.ref.text+0x2d4): cannot reach unknown
hppa64-linux-ld: init/main.o(.ref.text+0x2f0): cannot reach panic
hppa64-linux-ld: init/do_mounts.o(.text+0x30): cannot reach strncasecmp
hppa64-linux-ld: init/do_mounts.o(.text+0x158): cannot reach strncmp
hppa64-linux-ld: init/do_mounts.o(.text+0x180): cannot reach strchr

...


On 07/26/2018 12:59 PM, Helge Deller wrote:
> * Alex Ghiti <alex@ghiti.fr>:
>> This is the result of the build for all arches tackled in this series
>> rebased on 4.18-rc6:
>> ...
>> parisc:
>>          generic-64bit_defconfig: with huge page does not link
>>          generic-64bit_defconfig: without huge page does not link
>>          BUT not because of this series, any feedback welcome.
> Strange, but I will check that later....
>
> Anyway, I applied your v4-patch to my parisc64 tree, built the kernel,
> started it and ran some hugetlb LTP testcases sucessfully.
> So, please add:
>
> Tested-by: Helge Deller <deller@gmx.de> # parisc
>
> Helge

Re: [PATCH v4 01/11] hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> asm-generic/hugetlb.h proposes generic implementations of hugetlb
> related functions: use __HAVE_ARCH_HUGE* defines in order to make arch
> specific implementations of hugetlb functions consistent with pgtable.h
> scheme.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm64/include/asm/hugetlb.h | 2 +-
>  include/asm-generic/hugetlb.h    | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index e73f68569624..3fcf14663dfa 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -81,9 +81,9 @@ extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  				    unsigned long addr, pte_t *ptep);
>  extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  				  unsigned long addr, pte_t *ptep);
> +#define __HAVE_ARCH_HUGE_PTE_CLEAR
>  extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
>  			   pte_t *ptep, unsigned long sz);
> -#define huge_pte_clear huge_pte_clear
>  extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
>  				 pte_t *ptep, pte_t pte, unsigned long sz);
>  #define set_huge_swap_pte_at set_huge_swap_pte_at
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index 9d0cde8ab716..3da7cff52360 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -32,7 +32,7 @@ static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot)
>  	return pte_modify(pte, newprot);
>  }
>  
> -#ifndef huge_pte_clear
> +#ifndef __HAVE_ARCH_HUGE_PTE_CLEAR
>  static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
>  		    pte_t *ptep, unsigned long sz)
>  {
> 

Re: [PATCH v4 02/11] hugetlb: Introduce generic version of hugetlb_free_pgd_range

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, arm64, mips, parisc, sh, x86 architectures use the
> same version of hugetlb_free_pgd_range, so move this generic
> implementation into asm-generic/hugetlb.h.
> 

Just one small issue below.  Not absolutely necessary to fix.
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb.h     | 12 ++----------
>  arch/arm64/include/asm/hugetlb.h   | 10 ----------
>  arch/ia64/include/asm/hugetlb.h    |  5 +++--
>  arch/mips/include/asm/hugetlb.h    | 13 ++-----------
>  arch/parisc/include/asm/hugetlb.h  | 12 ++----------
>  arch/powerpc/include/asm/hugetlb.h |  4 +++-
>  arch/sh/include/asm/hugetlb.h      | 12 ++----------
>  arch/sparc/include/asm/hugetlb.h   |  4 +++-
>  arch/x86/include/asm/hugetlb.h     | 11 ++---------
>  include/asm-generic/hugetlb.h      | 11 +++++++++++
>  10 files changed, 30 insertions(+), 64 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
> index 7d26f6c4f0f5..047b893ef95d 100644
> --- a/arch/arm/include/asm/hugetlb.h
> +++ b/arch/arm/include/asm/hugetlb.h
> @@ -23,19 +23,9 @@
>  #define _ASM_ARM_HUGETLB_H
>  
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
>  
>  #include <asm/hugetlb-3level.h>
>  
> -static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
> -					  unsigned long addr, unsigned long end,
> -					  unsigned long floor,
> -					  unsigned long ceiling)
> -{
> -	free_pgd_range(tlb, addr, end, floor, ceiling);
> -}
> -
> -
>  static inline int is_hugepage_only_range(struct mm_struct *mm,
>  					 unsigned long addr, unsigned long len)
>  {
> @@ -68,4 +58,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  	clear_bit(PG_dcache_clean, &page->flags);
>  }
>  
> +#include <asm-generic/hugetlb.h>
> +

I don't think moving the #include is necessary in this case where you are
not adding a __HAVE_ARCH_HUGE* definition.  I like having all the #include
statements at the top if possible.
-- 
Mike Kravetz

>  #endif /* _ASM_ARM_HUGETLB_H */
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 3fcf14663dfa..4af1a800a900 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -25,16 +25,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
>  	return READ_ONCE(*ptep);
>  }
>  
> -
> -
> -static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
> -					  unsigned long addr, unsigned long end,
> -					  unsigned long floor,
> -					  unsigned long ceiling)
> -{
> -	free_pgd_range(tlb, addr, end, floor, ceiling);
> -}
> -
>  static inline int is_hugepage_only_range(struct mm_struct *mm,
>  					 unsigned long addr, unsigned long len)
>  {
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index 74d2a5540aaf..afe9fa4d969b 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -3,9 +3,8 @@
>  #define _ASM_IA64_HUGETLB_H
>  
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
> -
>  
> +#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
>  void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
>  			    unsigned long end, unsigned long floor,
>  			    unsigned long ceiling);
> @@ -70,4 +69,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
>  
> +#include <asm-generic/hugetlb.h>
> +
>  #endif /* _ASM_IA64_HUGETLB_H */
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 982bc0685330..53764050243e 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -10,8 +10,6 @@
>  #define __ASM_HUGETLB_H
>  
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
> -
>  
>  static inline int is_hugepage_only_range(struct mm_struct *mm,
>  					 unsigned long addr,
> @@ -38,15 +36,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
> -					  unsigned long addr,
> -					  unsigned long end,
> -					  unsigned long floor,
> -					  unsigned long ceiling)
> -{
> -	free_pgd_range(tlb, addr, end, floor, ceiling);
> -}
> -
>  static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  				   pte_t *ptep, pte_t pte)
>  {
> @@ -114,4 +103,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
>  
> +#include <asm-generic/hugetlb.h>
> +
>  #endif /* __ASM_HUGETLB_H */
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 58e0f4620426..28c23b68d38d 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -3,8 +3,6 @@
>  #define _ASM_PARISC64_HUGETLB_H
>  
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
> -
>  
>  void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  		     pte_t *ptep, pte_t pte);
> @@ -32,14 +30,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
> -					  unsigned long addr, unsigned long end,
> -					  unsigned long floor,
> -					  unsigned long ceiling)
> -{
> -	free_pgd_range(tlb, addr, end, floor, ceiling);
> -}
> -
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> @@ -71,4 +61,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
>  
> +#include <asm-generic/hugetlb.h>
> +
>  #endif /* _ASM_PARISC64_HUGETLB_H */
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 3225eb6402cc..a7d5c739df9b 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -4,7 +4,6 @@
>  
>  #ifdef CONFIG_HUGETLB_PAGE
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
>  
>  extern struct kmem_cache *hugepte_cache;
>  
> @@ -113,6 +112,7 @@ static inline void flush_hugetlb_page(struct vm_area_struct *vma,
>  void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
>  #endif
>  
> +#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
>  void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
>  			    unsigned long end, unsigned long floor,
>  			    unsigned long ceiling);
> @@ -179,6 +179,8 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
>  
> +#include <asm-generic/hugetlb.h>
> +
>  #else /* ! CONFIG_HUGETLB_PAGE */
>  static inline void flush_hugetlb_page(struct vm_area_struct *vma,
>  				      unsigned long vmaddr)
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index 735939c0f513..f6a51b609409 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -4,8 +4,6 @@
>  
>  #include <asm/cacheflush.h>
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
> -
>  
>  static inline int is_hugepage_only_range(struct mm_struct *mm,
>  					 unsigned long addr,
> @@ -27,14 +25,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
> -					  unsigned long addr, unsigned long end,
> -					  unsigned long floor,
> -					  unsigned long ceiling)
> -{
> -	free_pgd_range(tlb, addr, end, floor, ceiling);
> -}
> -
>  static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  				   pte_t *ptep, pte_t pte)
>  {
> @@ -85,4 +75,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  	clear_bit(PG_dcache_clean, &page->flags);
>  }
>  
> +#include <asm-generic/hugetlb.h>
> +
>  #endif /* _ASM_SH_HUGETLB_H */
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 300557c66698..59d89b52ccb7 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -3,7 +3,6 @@
>  #define _ASM_SPARC64_HUGETLB_H
>  
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
>  
>  #ifdef CONFIG_HUGETLB_PAGE
>  struct pud_huge_patch_entry {
> @@ -84,8 +83,11 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
>  
> +#define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
>  void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
>  			    unsigned long end, unsigned long floor,
>  			    unsigned long ceiling);
>  
> +#include <asm-generic/hugetlb.h>
> +
>  #endif /* _ASM_SPARC64_HUGETLB_H */
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 5ed826da5e07..996ce8e15365 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -3,7 +3,6 @@
>  #define _ASM_X86_HUGETLB_H
>  
>  #include <asm/page.h>
> -#include <asm-generic/hugetlb.h>
>  
>  #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE)
>  
> @@ -28,14 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
> -					  unsigned long addr, unsigned long end,
> -					  unsigned long floor,
> -					  unsigned long ceiling)
> -{
> -	free_pgd_range(tlb, addr, end, floor, ceiling);
> -}
> -
>  static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  				   pte_t *ptep, pte_t pte)
>  {
> @@ -90,4 +81,6 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  static inline bool gigantic_page_supported(void) { return true; }
>  #endif
>  
> +#include <asm-generic/hugetlb.h>
> +
>  #endif /* _ASM_X86_HUGETLB_H */
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index 3da7cff52360..c697ca9dda18 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -40,4 +40,15 @@ static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
> +static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
> +		unsigned long addr, unsigned long end,
> +		unsigned long floor, unsigned long ceiling)
> +{
> +	free_pgd_range(tlb, addr, end, floor, ceiling);
> +}
> +
> +
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 03/11] hugetlb: Introduce generic version of set_huge_pte_at

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, ia64, mips, powerpc, sh, x86 architectures use the
> same version of set_huge_pte_at, so move this generic
> implementation into asm-generic/hugetlb.h.
> 

Just one comment below, otherwise:
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb-3level.h | 6 ------
>  arch/arm64/include/asm/hugetlb.h      | 1 +
>  arch/ia64/include/asm/hugetlb.h       | 6 ------
>  arch/mips/include/asm/hugetlb.h       | 6 ------
>  arch/parisc/include/asm/hugetlb.h     | 1 +
>  arch/powerpc/include/asm/hugetlb.h    | 6 ------
>  arch/sh/include/asm/hugetlb.h         | 6 ------
>  arch/sparc/include/asm/hugetlb.h      | 1 +
>  arch/x86/include/asm/hugetlb.h        | 6 ------
>  include/asm-generic/hugetlb.h         | 8 +++++++-
>  10 files changed, 10 insertions(+), 37 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
> index d4014fbe5ea3..398fb06e8207 100644
> --- a/arch/arm/include/asm/hugetlb-3level.h
> +++ b/arch/arm/include/asm/hugetlb-3level.h
> @@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
>  	return retval;
>  }
>  
> -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
> -				   pte_t *ptep, pte_t pte)
> -{
> -	set_pte_at(mm, addr, ptep, pte);
> -}
> -

Since <asm-generic/hugetlb.h> is not directly included in this file,
I had to search around in the #include dependency chain to look for
it.  It makes me just a tiny bit nervous, but since it compiled, I'm
sure there is not an issue.
-- 
Mike Kravetz

>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 4af1a800a900..874661a1dff1 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -60,6 +60,7 @@ static inline void arch_clear_hugepage_flags(struct page *page)
>  extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
>  				struct page *page, int writable);
>  #define arch_make_huge_pte arch_make_huge_pte
> +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
>  extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  			    pte_t *ptep, pte_t pte);
>  extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index afe9fa4d969b..a235d6f60fb3 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -20,12 +20,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  		REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
>  }
>  
> -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
> -				   pte_t *ptep, pte_t pte)
> -{
> -	set_pte_at(mm, addr, ptep, pte);
> -}
> -
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 53764050243e..8ea439041d5d 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -36,12 +36,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
> -				   pte_t *ptep, pte_t pte)
> -{
> -	set_pte_at(mm, addr, ptep, pte);
> -}
> -
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 28c23b68d38d..77c8adbac7c3 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -4,6 +4,7 @@
>  
>  #include <asm/page.h>
>  
> +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
>  void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  		     pte_t *ptep, pte_t pte);
>  
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index a7d5c739df9b..0794b53439d4 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -132,12 +132,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
> -				   pte_t *ptep, pte_t pte)
> -{
> -	set_pte_at(mm, addr, ptep, pte);
> -}
> -
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index f6a51b609409..bc552e37c1c9 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -25,12 +25,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
> -				   pte_t *ptep, pte_t pte)
> -{
> -	set_pte_at(mm, addr, ptep, pte);
> -}
> -
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 59d89b52ccb7..16b0c53ea6c9 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -12,6 +12,7 @@ struct pud_huge_patch_entry {
>  extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
>  #endif
>  
> +#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
>  void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  		     pte_t *ptep, pte_t pte);
>  
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 996ce8e15365..554d5614b375 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
> -				   pte_t *ptep, pte_t pte)
> -{
> -	set_pte_at(mm, addr, ptep, pte);
> -}
> -
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
>  {
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index c697ca9dda18..ee010b756246 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -47,8 +47,14 @@ static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
>  {
>  	free_pgd_range(tlb, addr, end, floor, ceiling);
>  }
> +#endif
>  
> -
> +#ifndef __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
> +static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
> +		pte_t *ptep, pte_t pte)
> +{
> +	set_pte_at(mm, addr, ptep, pte);
> +}
>  #endif
>  
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 04/11] hugetlb: Introduce generic version of huge_ptep_get_and_clear

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, ia64, sh, x86 architectures use the
> same version of huge_ptep_get_and_clear, so move this generic
> implementation into asm-generic/hugetlb.h.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb-3level.h | 6 ------
>  arch/arm64/include/asm/hugetlb.h      | 1 +
>  arch/ia64/include/asm/hugetlb.h       | 6 ------
>  arch/mips/include/asm/hugetlb.h       | 1 +
>  arch/parisc/include/asm/hugetlb.h     | 1 +
>  arch/powerpc/include/asm/hugetlb.h    | 1 +
>  arch/sh/include/asm/hugetlb.h         | 6 ------
>  arch/sparc/include/asm/hugetlb.h      | 1 +
>  arch/x86/include/asm/hugetlb.h        | 6 ------
>  include/asm-generic/hugetlb.h         | 8 ++++++++
>  10 files changed, 13 insertions(+), 24 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
> index 398fb06e8207..ad36e84b819a 100644
> --- a/arch/arm/include/asm/hugetlb-3level.h
> +++ b/arch/arm/include/asm/hugetlb-3level.h
> @@ -49,12 +49,6 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  	ptep_set_wrprotect(mm, addr, ptep);
>  }
>  
> -static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
> -					    unsigned long addr, pte_t *ptep)
> -{
> -	return ptep_get_and_clear(mm, addr, ptep);
> -}
> -
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty)
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 874661a1dff1..6ae0bcafe162 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -66,6 +66,7 @@ extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  				      unsigned long addr, pte_t *ptep,
>  				      pte_t pte, int dirty);
> +#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
>  extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  				     unsigned long addr, pte_t *ptep);
>  extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index a235d6f60fb3..6719c74da0de 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -20,12 +20,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  		REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
>  }
>  
> -static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
> -					    unsigned long addr, pte_t *ptep)
> -{
> -	return ptep_get_and_clear(mm, addr, ptep);
> -}
> -
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 8ea439041d5d..0959cc5a41fa 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -36,6 +36,7 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 77c8adbac7c3..6e281e1bb336 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -8,6 +8,7 @@
>  void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  		     pte_t *ptep, pte_t pte);
>  
> +#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
>  pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
>  			      pte_t *ptep);
>  
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 0794b53439d4..970101cf9c82 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -132,6 +132,7 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index bc552e37c1c9..08ee6c00b5e9 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -25,12 +25,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
> -					    unsigned long addr, pte_t *ptep)
> -{
> -	return ptep_get_and_clear(mm, addr, ptep);
> -}
> -
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 16b0c53ea6c9..944e3a4bfaff 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -16,6 +16,7 @@ extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
>  void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  		     pte_t *ptep, pte_t pte);
>  
> +#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
>  pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
>  			      pte_t *ptep);
>  
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 554d5614b375..48b8d9b13cc6 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
> -					    unsigned long addr, pte_t *ptep)
> -{
> -	return ptep_get_and_clear(mm, addr, ptep);
> -}
> -
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index ee010b756246..0f6f151780dd 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -57,4 +57,12 @@ static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
> +static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
> +		unsigned long addr, pte_t *ptep)
> +{
> +	return ptep_get_and_clear(mm, addr, ptep);
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 05/11] hugetlb: Introduce generic version of huge_ptep_clear_flush

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, x86 architectures use the same version of
> huge_ptep_clear_flush, so move this generic implementation into
> asm-generic/hugetlb.h.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb-3level.h | 6 ------
>  arch/arm64/include/asm/hugetlb.h      | 1 +
>  arch/ia64/include/asm/hugetlb.h       | 1 +
>  arch/mips/include/asm/hugetlb.h       | 1 +
>  arch/parisc/include/asm/hugetlb.h     | 1 +
>  arch/powerpc/include/asm/hugetlb.h    | 1 +
>  arch/sh/include/asm/hugetlb.h         | 1 +
>  arch/sparc/include/asm/hugetlb.h      | 1 +
>  arch/x86/include/asm/hugetlb.h        | 6 ------
>  include/asm-generic/hugetlb.h         | 8 ++++++++
>  10 files changed, 15 insertions(+), 12 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
> index ad36e84b819a..b897541520ef 100644
> --- a/arch/arm/include/asm/hugetlb-3level.h
> +++ b/arch/arm/include/asm/hugetlb-3level.h
> @@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
>  	return retval;
>  }
>  
> -static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
> -					 unsigned long addr, pte_t *ptep)
> -{
> -	ptep_clear_flush(vma, addr, ptep);
> -}
> -
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 6ae0bcafe162..4c8dd488554d 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -71,6 +71,7 @@ extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  				     unsigned long addr, pte_t *ptep);
>  extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  				    unsigned long addr, pte_t *ptep);
> +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  extern void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  				  unsigned long addr, pte_t *ptep);
>  #define __HAVE_ARCH_HUGE_PTE_CLEAR
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index 6719c74da0de..41b5f6adeee4 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -20,6 +20,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  		REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE);
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 0959cc5a41fa..7df1f116a3cc 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -48,6 +48,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  	return pte;
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 6e281e1bb336..9afff26747a1 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -32,6 +32,7 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 970101cf9c82..0b02856aa85b 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -143,6 +143,7 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  #endif
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index 08ee6c00b5e9..9abf9c86b769 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -25,6 +25,7 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 944e3a4bfaff..651a9593fcee 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -42,6 +42,7 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 48b8d9b13cc6..8347d5abf882 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -27,12 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
> -					 unsigned long addr, pte_t *ptep)
> -{
> -	ptep_clear_flush(vma, addr, ptep);
> -}
> -
>  static inline int huge_pte_none(pte_t pte)
>  {
>  	return pte_none(pte);
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index 0f6f151780dd..ffa63fd8388d 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -65,4 +65,12 @@ static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
> +static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
> +		unsigned long addr, pte_t *ptep)
> +{
> +	ptep_clear_flush(vma, addr, ptep);
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 06/11] hugetlb: Introduce generic version of huge_pte_none

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, arm64, ia64, parisc, powerpc, sh, sparc, x86 architectures
> use the same version of huge_pte_none, so move this generic
> implementation into asm-generic/hugetlb.h.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb.h     | 5 -----
>  arch/arm64/include/asm/hugetlb.h   | 5 -----
>  arch/ia64/include/asm/hugetlb.h    | 5 -----
>  arch/mips/include/asm/hugetlb.h    | 1 +
>  arch/parisc/include/asm/hugetlb.h  | 5 -----
>  arch/powerpc/include/asm/hugetlb.h | 5 -----
>  arch/sh/include/asm/hugetlb.h      | 5 -----
>  arch/sparc/include/asm/hugetlb.h   | 5 -----
>  arch/x86/include/asm/hugetlb.h     | 5 -----
>  include/asm-generic/hugetlb.h      | 7 +++++++
>  10 files changed, 8 insertions(+), 40 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
> index 047b893ef95d..3d2ce4dbc145 100644
> --- a/arch/arm/include/asm/hugetlb.h
> +++ b/arch/arm/include/asm/hugetlb.h
> @@ -43,11 +43,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 4c8dd488554d..49247c6f94db 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -42,11 +42,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index 41b5f6adeee4..bf573500b3c4 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -26,11 +26,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 7df1f116a3cc..1c9c4531376c 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -55,6 +55,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  	flush_tlb_page(vma, addr & huge_page_mask(hstate_vma(vma)));
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTE_NONE
>  static inline int huge_pte_none(pte_t pte)
>  {
>  	unsigned long val = pte_val(pte) & ~_PAGE_GLOBAL;
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 9afff26747a1..c09d8c74553c 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -38,11 +38,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 0b02856aa85b..3562d46585ba 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -152,11 +152,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  	flush_hugetlb_page(vma, addr);
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index 9abf9c86b769..a9f8266f33cf 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -31,11 +31,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 651a9593fcee..11115bbd712e 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -48,11 +48,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 8347d5abf882..c5fdc53b6e41 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -27,11 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline int huge_pte_none(pte_t pte)
> -{
> -	return pte_none(pte);
> -}
> -
>  static inline pte_t huge_pte_wrprotect(pte_t pte)
>  {
>  	return pte_wrprotect(pte);
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index ffa63fd8388d..2fc3d68424e9 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -73,4 +73,11 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGE_PTE_NONE
> +static inline int huge_pte_none(pte_t pte)
> +{
> +	return pte_none(pte);
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 07/11] hugetlb: Introduce generic version of huge_pte_wrprotect

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, arm64, ia64, mips, parisc, powerpc, sh, sparc, x86
> architectures use the same version of huge_pte_wrprotect, so move
> this generic implementation into asm-generic/hugetlb.h.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb.h     | 5 -----
>  arch/arm64/include/asm/hugetlb.h   | 5 -----
>  arch/ia64/include/asm/hugetlb.h    | 5 -----
>  arch/mips/include/asm/hugetlb.h    | 5 -----
>  arch/parisc/include/asm/hugetlb.h  | 5 -----
>  arch/powerpc/include/asm/hugetlb.h | 5 -----
>  arch/sh/include/asm/hugetlb.h      | 5 -----
>  arch/sparc/include/asm/hugetlb.h   | 5 -----
>  arch/x86/include/asm/hugetlb.h     | 5 -----
>  include/asm-generic/hugetlb.h      | 7 +++++++
>  10 files changed, 7 insertions(+), 45 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
> index 3d2ce4dbc145..1e718a626ef9 100644
> --- a/arch/arm/include/asm/hugetlb.h
> +++ b/arch/arm/include/asm/hugetlb.h
> @@ -43,11 +43,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  	clear_bit(PG_dcache_clean, &page->flags);
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 49247c6f94db..1fd64ebf0cd7 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -42,11 +42,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  	clear_bit(PG_dcache_clean, &page->flags);
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index bf573500b3c4..82fe3d7a38d9 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -26,11 +26,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 1c9c4531376c..b3d6bb53ee6e 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -62,11 +62,6 @@ static inline int huge_pte_none(pte_t pte)
>  	return !val || (val == (unsigned long)invalid_pte_table);
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index c09d8c74553c..5a102d7251e4 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -38,11 +38,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep);
>  
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 3562d46585ba..7123599089c6 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -152,11 +152,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  	flush_hugetlb_page(vma, addr);
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  				      unsigned long addr, pte_t *ptep,
>  				      pte_t pte, int dirty);
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index a9f8266f33cf..54f65094efe6 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -31,11 +31,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 11115bbd712e..f661362376e0 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -48,11 +48,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index c5fdc53b6e41..19668672ab37 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -27,11 +27,6 @@ static inline int prepare_hugepage_range(struct file *file,
>  	return 0;
>  }
>  
> -static inline pte_t huge_pte_wrprotect(pte_t pte)
> -{
> -	return pte_wrprotect(pte);
> -}
> -
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index 2fc3d68424e9..cd9697672b79 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -80,4 +80,11 @@ static inline int huge_pte_none(pte_t pte)
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGE_PTE_WRPROTECT
> +static inline pte_t huge_pte_wrprotect(pte_t pte)
> +{
> +	return pte_wrprotect(pte);
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 08/11] hugetlb: Introduce generic version of prepare_hugepage_range

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, arm64, powerpc, sparc, x86 architectures use the same version of
> prepare_hugepage_range, so move this generic implementation into
> asm-generic/hugetlb.h.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb.h     | 11 -----------
>  arch/arm64/include/asm/hugetlb.h   | 11 -----------
>  arch/ia64/include/asm/hugetlb.h    |  1 +
>  arch/mips/include/asm/hugetlb.h    |  1 +
>  arch/parisc/include/asm/hugetlb.h  |  1 +
>  arch/powerpc/include/asm/hugetlb.h | 15 ---------------
>  arch/sh/include/asm/hugetlb.h      |  1 +
>  arch/sparc/include/asm/hugetlb.h   | 16 ----------------
>  arch/x86/include/asm/hugetlb.h     | 15 ---------------
>  include/asm-generic/hugetlb.h      | 15 +++++++++++++++
>  10 files changed, 19 insertions(+), 68 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb.h b/arch/arm/include/asm/hugetlb.h
> index 1e718a626ef9..34fb401efe81 100644
> --- a/arch/arm/include/asm/hugetlb.h
> +++ b/arch/arm/include/asm/hugetlb.h
> @@ -32,17 +32,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> -static inline int prepare_hugepage_range(struct file *file,
> -					 unsigned long addr, unsigned long len)
> -{
> -	struct hstate *h = hstate_file(file);
> -	if (len & ~huge_page_mask(h))
> -		return -EINVAL;
> -	if (addr & ~huge_page_mask(h))
> -		return -EINVAL;
> -	return 0;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  	clear_bit(PG_dcache_clean, &page->flags);
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 1fd64ebf0cd7..3e7f6e69b28d 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -31,17 +31,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> -static inline int prepare_hugepage_range(struct file *file,
> -					 unsigned long addr, unsigned long len)
> -{
> -	struct hstate *h = hstate_file(file);
> -	if (len & ~huge_page_mask(h))
> -		return -EINVAL;
> -	if (addr & ~huge_page_mask(h))
> -		return -EINVAL;
> -	return 0;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  	clear_bit(PG_dcache_clean, &page->flags);
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index 82fe3d7a38d9..cbe296271030 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -9,6 +9,7 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
>  			    unsigned long end, unsigned long floor,
>  			    unsigned long ceiling);
>  
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
>  int prepare_hugepage_range(struct file *file,
>  			unsigned long addr, unsigned long len);
>  
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index b3d6bb53ee6e..6ff2531cfb1d 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -18,6 +18,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
>  static inline int prepare_hugepage_range(struct file *file,
>  					 unsigned long addr,
>  					 unsigned long len)
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 5a102d7251e4..fb7e0fd858a3 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -22,6 +22,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>   * If the arch doesn't supply something else, assume that hugepage
>   * size aligned regions are ok without further preparation.
>   */
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
>  static inline int prepare_hugepage_range(struct file *file,
>  			unsigned long addr, unsigned long len)
>  {
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 7123599089c6..69c14ecac133 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -117,21 +117,6 @@ void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
>  			    unsigned long end, unsigned long floor,
>  			    unsigned long ceiling);
>  
> -/*
> - * If the arch doesn't supply something else, assume that hugepage
> - * size aligned regions are ok without further preparation.
> - */
> -static inline int prepare_hugepage_range(struct file *file,
> -			unsigned long addr, unsigned long len)
> -{
> -	struct hstate *h = hstate_file(file);
> -	if (len & ~huge_page_mask(h))
> -		return -EINVAL;
> -	if (addr & ~huge_page_mask(h))
> -		return -EINVAL;
> -	return 0;
> -}
> -
>  #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
>  static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  					    unsigned long addr, pte_t *ptep)
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index 54f65094efe6..f1bbd255ee43 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -15,6 +15,7 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>   * If the arch doesn't supply something else, assume that hugepage
>   * size aligned regions are ok without further preparation.
>   */
> +#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
>  static inline int prepare_hugepage_range(struct file *file,
>  			unsigned long addr, unsigned long len)
>  {
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index f661362376e0..2101ea217f33 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -26,22 +26,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> -/*
> - * If the arch doesn't supply something else, assume that hugepage
> - * size aligned regions are ok without further preparation.
> - */
> -static inline int prepare_hugepage_range(struct file *file,
> -			unsigned long addr, unsigned long len)
> -{
> -	struct hstate *h = hstate_file(file);
> -
> -	if (len & ~huge_page_mask(h))
> -		return -EINVAL;
> -	if (addr & ~huge_page_mask(h))
> -		return -EINVAL;
> -	return 0;
> -}
> -
>  #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
>  static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  					 unsigned long addr, pte_t *ptep)
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 19668672ab37..2e5117d37c7d 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -12,21 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> -/*
> - * If the arch doesn't supply something else, assume that hugepage
> - * size aligned regions are ok without further preparation.
> - */
> -static inline int prepare_hugepage_range(struct file *file,
> -			unsigned long addr, unsigned long len)
> -{
> -	struct hstate *h = hstate_file(file);
> -	if (len & ~huge_page_mask(h))
> -		return -EINVAL;
> -	if (addr & ~huge_page_mask(h))
> -		return -EINVAL;
> -	return 0;
> -}
> -
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index cd9697672b79..6c0c8b0c71e0 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -87,4 +87,19 @@ static inline pte_t huge_pte_wrprotect(pte_t pte)
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
> +static inline int prepare_hugepage_range(struct file *file,
> +		unsigned long addr, unsigned long len)
> +{
> +	struct hstate *h = hstate_file(file);
> +
> +	if (len & ~huge_page_mask(h))
> +		return -EINVAL;
> +	if (addr & ~huge_page_mask(h))
> +		return -EINVAL;
> +
> +	return 0;
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 09/11] hugetlb: Introduce generic version of huge_ptep_set_wrprotect

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, ia64, mips, sh, x86 architectures use the same version
> of huge_ptep_set_wrprotect, so move this generic implementation into
> asm-generic/hugetlb.h.
> Note: powerpc uses twice for book3s/32 and nohash/32 the same version as
> the above architectures, but the modification was not straightforward
> and hence has not been done.
> 

Just one small comment, otehrwise
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb-3level.h        | 6 ------
>  arch/arm64/include/asm/hugetlb.h             | 1 +
>  arch/ia64/include/asm/hugetlb.h              | 6 ------
>  arch/mips/include/asm/hugetlb.h              | 6 ------
>  arch/parisc/include/asm/hugetlb.h            | 1 +
>  arch/powerpc/include/asm/book3s/32/pgtable.h | 2 ++
>  arch/powerpc/include/asm/book3s/64/pgtable.h | 1 +
>  arch/powerpc/include/asm/nohash/32/pgtable.h | 2 ++
>  arch/powerpc/include/asm/nohash/64/pgtable.h | 1 +

As in patch 03, the book3s and nohash header files do not explicitly
include <asm-generic/hugetlb.h>.  With these, I had an even harder time
finding out who brought in that file.  This is not an issue with this
patch, just wish there was some easier way to check/prove include file
dependencies.  Since it compiles, I am sure it is OK.
-- 
Mike Kravetz

>  arch/sh/include/asm/hugetlb.h                | 6 ------
>  arch/sparc/include/asm/hugetlb.h             | 1 +
>  arch/x86/include/asm/hugetlb.h               | 6 ------
>  include/asm-generic/hugetlb.h                | 8 ++++++++
>  13 files changed, 17 insertions(+), 30 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
> index b897541520ef..8247cd6a2ac6 100644
> --- a/arch/arm/include/asm/hugetlb-3level.h
> +++ b/arch/arm/include/asm/hugetlb-3level.h
> @@ -37,12 +37,6 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
>  	return retval;
>  }
>  
> -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
> -					   unsigned long addr, pte_t *ptep)
> -{
> -	ptep_set_wrprotect(mm, addr, ptep);
> -}
> -
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty)
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 3e7f6e69b28d..f4f69ae5466e 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -48,6 +48,7 @@ extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  #define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
>  extern pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
>  				     unsigned long addr, pte_t *ptep);
> +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
>  extern void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  				    unsigned long addr, pte_t *ptep);
>  #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index cbe296271030..49d1f7949f3a 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -27,12 +27,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
> -					   unsigned long addr, pte_t *ptep)
> -{
> -	ptep_set_wrprotect(mm, addr, ptep);
> -}
> -
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty)
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 6ff2531cfb1d..3dcf5debf8c4 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -63,12 +63,6 @@ static inline int huge_pte_none(pte_t pte)
>  	return !val || (val == (unsigned long)invalid_pte_table);
>  }
>  
> -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
> -					   unsigned long addr, pte_t *ptep)
> -{
> -	ptep_set_wrprotect(mm, addr, ptep);
> -}
> -
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr,
>  					     pte_t *ptep, pte_t pte,
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index fb7e0fd858a3..9c3950ca2974 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -39,6 +39,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
>  void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep);
>  
> diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h
> index 02f5acd7ccc4..d2cd1d0226e9 100644
> --- a/arch/powerpc/include/asm/book3s/32/pgtable.h
> +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h
> @@ -228,6 +228,8 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
>  {
>  	pte_update(ptep, (_PAGE_RW | _PAGE_HWWRITE), _PAGE_RO);
>  }
> +
> +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
> index 42aafba7a308..7d957f7c47cd 100644
> --- a/arch/powerpc/include/asm/book3s/64/pgtable.h
> +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
> @@ -451,6 +451,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
>  		pte_update(mm, addr, ptep, 0, _PAGE_PRIVILEGED, 0);
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/powerpc/include/asm/nohash/32/pgtable.h b/arch/powerpc/include/asm/nohash/32/pgtable.h
> index 7c46a98cc7f4..f39e200d9591 100644
> --- a/arch/powerpc/include/asm/nohash/32/pgtable.h
> +++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
> @@ -249,6 +249,8 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
>  {
>  	pte_update(ptep, (_PAGE_RW | _PAGE_HWWRITE), _PAGE_RO);
>  }
> +
> +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
> index dd0c7236208f..69fbf7e9b4db 100644
> --- a/arch/powerpc/include/asm/nohash/64/pgtable.h
> +++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
> @@ -238,6 +238,7 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
>  	pte_update(mm, addr, ptep, _PAGE_RW, 0, 0);
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index f1bbd255ee43..8df4004977b9 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -32,12 +32,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
> -					   unsigned long addr, pte_t *ptep)
> -{
> -	ptep_set_wrprotect(mm, addr, ptep);
> -}
> -
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty)
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 2101ea217f33..c41754a113f3 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -32,6 +32,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
>  static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep)
>  {
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 2e5117d37c7d..de370836a17d 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -12,12 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> -static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
> -					   unsigned long addr, pte_t *ptep)
> -{
> -	ptep_set_wrprotect(mm, addr, ptep);
> -}
> -
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty)
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index 6c0c8b0c71e0..9b9039845278 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -102,4 +102,12 @@ static inline int prepare_hugepage_range(struct file *file,
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
> +static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
> +		unsigned long addr, pte_t *ptep)
> +{
> +	ptep_set_wrprotect(mm, addr, ptep);
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 10/11] hugetlb: Introduce generic version of huge_ptep_set_access_flags

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> arm, ia64, sh, x86 architectures use the same version
> of huge_ptep_set_access_flags, so move this generic implementation
> into asm-generic/hugetlb.h.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb-3level.h | 7 -------
>  arch/arm64/include/asm/hugetlb.h      | 1 +
>  arch/ia64/include/asm/hugetlb.h       | 7 -------
>  arch/mips/include/asm/hugetlb.h       | 1 +
>  arch/parisc/include/asm/hugetlb.h     | 1 +
>  arch/powerpc/include/asm/hugetlb.h    | 1 +
>  arch/sh/include/asm/hugetlb.h         | 7 -------
>  arch/sparc/include/asm/hugetlb.h      | 1 +
>  arch/x86/include/asm/hugetlb.h        | 7 -------
>  include/asm-generic/hugetlb.h         | 9 +++++++++
>  10 files changed, 14 insertions(+), 28 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
> index 8247cd6a2ac6..54e4b097b1f5 100644
> --- a/arch/arm/include/asm/hugetlb-3level.h
> +++ b/arch/arm/include/asm/hugetlb-3level.h
> @@ -37,11 +37,4 @@ static inline pte_t huge_ptep_get(pte_t *ptep)
>  	return retval;
>  }
>  
> -static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
> -					     unsigned long addr, pte_t *ptep,
> -					     pte_t pte, int dirty)
> -{
> -	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
> -}
> -
>  #endif /* _ASM_ARM_HUGETLB_3LEVEL_H */
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index f4f69ae5466e..80887abcef7f 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -42,6 +42,7 @@ extern pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
>  #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
>  extern void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
>  			    pte_t *ptep, pte_t pte);
> +#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
>  extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  				      unsigned long addr, pte_t *ptep,
>  				      pte_t pte, int dirty);
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index 49d1f7949f3a..e9b42750fdf5 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -27,13 +27,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
> -					     unsigned long addr, pte_t *ptep,
> -					     pte_t pte, int dirty)
> -{
> -	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
> -}
> -
>  static inline pte_t huge_ptep_get(pte_t *ptep)
>  {
>  	return *ptep;
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 3dcf5debf8c4..120adc3b2ffd 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -63,6 +63,7 @@ static inline int huge_pte_none(pte_t pte)
>  	return !val || (val == (unsigned long)invalid_pte_table);
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr,
>  					     pte_t *ptep, pte_t pte,
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 9c3950ca2974..165b4e5a6f32 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -43,6 +43,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  					   unsigned long addr, pte_t *ptep);
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
>  int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty);
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 69c14ecac133..658bf7136a3c 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -137,6 +137,7 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  	flush_hugetlb_page(vma, addr);
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
>  extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  				      unsigned long addr, pte_t *ptep,
>  				      pte_t pte, int dirty);
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index 8df4004977b9..c87195ae0cfa 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -32,13 +32,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
> -					     unsigned long addr, pte_t *ptep,
> -					     pte_t pte, int dirty)
> -{
> -	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
> -}
> -
>  static inline pte_t huge_ptep_get(pte_t *ptep)
>  {
>  	return *ptep;
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index c41754a113f3..028a1465fbe7 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -40,6 +40,7 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
>  }
>  
> +#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
>  static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty)
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index de370836a17d..1df8944904c6 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -12,13 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> -static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
> -					     unsigned long addr, pte_t *ptep,
> -					     pte_t pte, int dirty)
> -{
> -	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
> -}
> -
>  static inline pte_t huge_ptep_get(pte_t *ptep)
>  {
>  	return *ptep;
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index 9b9039845278..f3c99a03ee83 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -110,4 +110,13 @@ static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
> +static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
> +		unsigned long addr, pte_t *ptep,
> +		pte_t pte, int dirty)
> +{
> +	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 11/11] hugetlb: Introduce generic version of huge_ptep_get

[Mike Kravetz]

On 07/05/2018 04:07 AM, Alexandre Ghiti wrote:
> ia64, mips, parisc, powerpc, sh, sparc, x86 architectures use the
> same version of huge_ptep_get, so move this generic implementation into
> asm-generic/hugetlb.h.
> 

Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
-- 
Mike Kravetz

> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
> ---
>  arch/arm/include/asm/hugetlb-3level.h | 1 +
>  arch/arm64/include/asm/hugetlb.h      | 1 +
>  arch/ia64/include/asm/hugetlb.h       | 5 -----
>  arch/mips/include/asm/hugetlb.h       | 5 -----
>  arch/parisc/include/asm/hugetlb.h     | 5 -----
>  arch/powerpc/include/asm/hugetlb.h    | 5 -----
>  arch/sh/include/asm/hugetlb.h         | 5 -----
>  arch/sparc/include/asm/hugetlb.h      | 5 -----
>  arch/x86/include/asm/hugetlb.h        | 5 -----
>  include/asm-generic/hugetlb.h         | 7 +++++++
>  10 files changed, 9 insertions(+), 35 deletions(-)
> 
> diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
> index 54e4b097b1f5..0d9f3918fa7e 100644
> --- a/arch/arm/include/asm/hugetlb-3level.h
> +++ b/arch/arm/include/asm/hugetlb-3level.h
> @@ -29,6 +29,7 @@
>   * ptes.
>   * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
>   */
> +#define __HAVE_ARCH_HUGE_PTEP_GET
>  static inline pte_t huge_ptep_get(pte_t *ptep)
>  {
>  	pte_t retval = *ptep;
> diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
> index 80887abcef7f..fb6609875455 100644
> --- a/arch/arm64/include/asm/hugetlb.h
> +++ b/arch/arm64/include/asm/hugetlb.h
> @@ -20,6 +20,7 @@
>  
>  #include <asm/page.h>
>  
> +#define __HAVE_ARCH_HUGE_PTEP_GET
>  static inline pte_t huge_ptep_get(pte_t *ptep)
>  {
>  	return READ_ONCE(*ptep);
> diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
> index e9b42750fdf5..36cc0396b214 100644
> --- a/arch/ia64/include/asm/hugetlb.h
> +++ b/arch/ia64/include/asm/hugetlb.h
> @@ -27,11 +27,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline pte_t huge_ptep_get(pte_t *ptep)
> -{
> -	return *ptep;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
> diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
> index 120adc3b2ffd..425bb6fc3bda 100644
> --- a/arch/mips/include/asm/hugetlb.h
> +++ b/arch/mips/include/asm/hugetlb.h
> @@ -82,11 +82,6 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  	return changed;
>  }
>  
> -static inline pte_t huge_ptep_get(pte_t *ptep)
> -{
> -	return *ptep;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
> diff --git a/arch/parisc/include/asm/hugetlb.h b/arch/parisc/include/asm/hugetlb.h
> index 165b4e5a6f32..7cb595dcb7d7 100644
> --- a/arch/parisc/include/asm/hugetlb.h
> +++ b/arch/parisc/include/asm/hugetlb.h
> @@ -48,11 +48,6 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  					     unsigned long addr, pte_t *ptep,
>  					     pte_t pte, int dirty);
>  
> -static inline pte_t huge_ptep_get(pte_t *ptep)
> -{
> -	return *ptep;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
> diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
> index 658bf7136a3c..33a2d9e3ea9e 100644
> --- a/arch/powerpc/include/asm/hugetlb.h
> +++ b/arch/powerpc/include/asm/hugetlb.h
> @@ -142,11 +142,6 @@ extern int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  				      unsigned long addr, pte_t *ptep,
>  				      pte_t pte, int dirty);
>  
> -static inline pte_t huge_ptep_get(pte_t *ptep)
> -{
> -	return *ptep;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
> diff --git a/arch/sh/include/asm/hugetlb.h b/arch/sh/include/asm/hugetlb.h
> index c87195ae0cfa..6f025fe18146 100644
> --- a/arch/sh/include/asm/hugetlb.h
> +++ b/arch/sh/include/asm/hugetlb.h
> @@ -32,11 +32,6 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
>  {
>  }
>  
> -static inline pte_t huge_ptep_get(pte_t *ptep)
> -{
> -	return *ptep;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  	clear_bit(PG_dcache_clean, &page->flags);
> diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
> index 028a1465fbe7..3963f80d1cb3 100644
> --- a/arch/sparc/include/asm/hugetlb.h
> +++ b/arch/sparc/include/asm/hugetlb.h
> @@ -53,11 +53,6 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  	return changed;
>  }
>  
> -static inline pte_t huge_ptep_get(pte_t *ptep)
> -{
> -	return *ptep;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
> diff --git a/arch/x86/include/asm/hugetlb.h b/arch/x86/include/asm/hugetlb.h
> index 1df8944904c6..c97b34a29054 100644
> --- a/arch/x86/include/asm/hugetlb.h
> +++ b/arch/x86/include/asm/hugetlb.h
> @@ -12,11 +12,6 @@ static inline int is_hugepage_only_range(struct mm_struct *mm,
>  	return 0;
>  }
>  
> -static inline pte_t huge_ptep_get(pte_t *ptep)
> -{
> -	return *ptep;
> -}
> -
>  static inline void arch_clear_hugepage_flags(struct page *page)
>  {
>  }
> diff --git a/include/asm-generic/hugetlb.h b/include/asm-generic/hugetlb.h
> index f3c99a03ee83..71d7b77eea50 100644
> --- a/include/asm-generic/hugetlb.h
> +++ b/include/asm-generic/hugetlb.h
> @@ -119,4 +119,11 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
>  }
>  #endif
>  
> +#ifndef __HAVE_ARCH_HUGE_PTEP_GET
> +static inline pte_t huge_ptep_get(pte_t *ptep)
> +{
> +	return *ptep;
> +}
> +#endif
> +
>  #endif /* _ASM_GENERIC_HUGETLB_H */
> 

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alex Ghiti]

Actually, I went back to v4.17, and I have the same errors.

I used:

$ make ARCH=parisc O=build_parisc generic-64bit_defconfig
$ PATH=/home/alex/wip/toolchain/gcc-8.1.0-nolibc/hppa64-linux/bin:$PATH 
make ARCH=parisc CROSS_COMPILE=hppa64-linux-

I downloaded the crosscompiler here: 
https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/8.1.0/


On 07/26/2018 05:01 PM, Alex Ghiti wrote:
> Hi Helge,
>
> Thanks for your tests.
> In case it can help you, this is what I get when I try to build 
> generic-64bit_defconfig (I truncated the output):
>
> ...
>
>  LD      vmlinux.o
>  MODPOST vmlinux.o
> hppa64-linux-ld: init/main.o(.text+0x98): cannot reach strreplace
> init/main.o: In function `initcall_blacklisted':
> init/.tmp_main.o:(.text+0x98): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `strreplace' defined in .text section 
> in lib/string.o
> hppa64-linux-ld: init/main.o(.text+0xbc): cannot reach strcmp
> init/.tmp_main.o:(.text+0xbc): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `strcmp' defined in .text section in 
> lib/string.o
> hppa64-linux-ld: init/main.o(.text+0x21c): cannot reach strcpy
> init/main.o: In function `do_one_initcall':
> (.text+0x21c): relocation truncated to fit: R_PARISC_PCREL22F against 
> symbol `strcpy' defined in .text section in lib/string.o
> hppa64-linux-ld: init/main.o(.text+0x250): cannot reach strlcat
> (.text+0x250): relocation truncated to fit: R_PARISC_PCREL22F against 
> symbol `strlcat' defined in .text section in lib/string.o
> hppa64-linux-ld: init/main.o(.init.text+0x1d4): cannot reach strcmp
> init/main.o: In function `do_early_param':
> init/.tmp_main.o:(.init.text+0x1d4): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `strcmp' defined in .text section in 
> lib/string.o
> hppa64-linux-ld: init/main.o(.init.text+0x250): cannot reach strcmp
> init/.tmp_main.o:(.init.text+0x250): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `strcmp' defined in .text section in 
> lib/string.o
> hppa64-linux-ld: init/main.o(.init.text+0x294): cannot reach strlen
> init/main.o: In function `repair_env_string':
> init/.tmp_main.o:(.init.text+0x294): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `strlen' defined in .text section in 
> lib/string.o
> hppa64-linux-ld: init/main.o(.init.text+0x2f0): cannot reach strlen
> init/.tmp_main.o:(.init.text+0x2f0): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `strlen' defined in .text section in 
> lib/string.o
> hppa64-linux-ld: init/main.o(.init.text+0x308): cannot reach memmove
> init/.tmp_main.o:(.init.text+0x308): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `memmove' defined in .text section in 
> lib/string.o
> hppa64-linux-ld: init/main.o(.init.text+0x454): cannot reach strlen
> init/main.o: In function `unknown_bootoption':
> init/.tmp_main.o:(.init.text+0x454): relocation truncated to fit: 
> R_PARISC_PCREL22F against symbol `strlen' defined in .text section in 
> lib/string.o
> hppa64-linux-ld: init/main.o(.init.text+0x4dc): cannot reach strchr
> init/.tmp_main.o:(.init.text+0x4dc): additional relocation overflows 
> omitted from the output
> hppa64-linux-ld: init/main.o(.init.text+0x638): cannot reach strncmp
> hppa64-linux-ld: init/main.o(.init.text+0x694): cannot reach get_option
> hppa64-linux-ld: init/main.o(.init.text+0x744): cannot reach strsep
> hppa64-linux-ld: init/main.o(.init.text+0x798): cannot reach strlen
> hppa64-linux-ld: init/main.o(.init.text+0x7d0): cannot reach strcpy
> hppa64-linux-ld: init/main.o(.init.text+0x954): cannot reach strlcpy
> hppa64-linux-ld: init/main.o(.init.text+0xab8): cannot reach strlen
> hppa64-linux-ld: init/main.o(.init.text+0xafc): cannot reach strlen
> hppa64-linux-ld: init/main.o(.init.text+0xb40): cannot reach strlen
> hppa64-linux-ld: init/main.o(.init.text+0xb84): cannot reach strlen
> hppa64-linux-ld: init/main.o(.init.text+0xbd0): cannot reach strcpy
> hppa64-linux-ld: init/main.o(.init.text+0xbe8): cannot reach strcpy
> hppa64-linux-ld: init/main.o(.init.text+0xc3c): cannot reach 
> build_all_zonelists
> hppa64-linux-ld: init/main.o(.init.text+0x1200): cannot reach unknown
> hppa64-linux-ld: init/main.o(.init.text+0x1278): cannot reach 
> wait_for_completion
> hppa64-linux-ld: init/main.o(.init.text+0x12b0): cannot reach 
> _raw_spin_lock
> hppa64-linux-ld: init/main.o(.init.text+0x147c): cannot reach strcpy
> hppa64-linux-ld: init/main.o(.ref.text+0x40): cannot reach kernel_thread
> hppa64-linux-ld: init/main.o(.ref.text+0x60): cannot reach 
> find_task_by_pid_ns
> hppa64-linux-ld: init/main.o(.ref.text+0x98): cannot reach 
> set_cpus_allowed_ptr
> hppa64-linux-ld: init/main.o(.ref.text+0xbc): cannot reach kernel_thread
> hppa64-linux-ld: init/main.o(.ref.text+0xd4): cannot reach 
> find_task_by_pid_ns
> hppa64-linux-ld: init/main.o(.ref.text+0x108): cannot reach complete
> hppa64-linux-ld: init/main.o(.ref.text+0x128): cannot reach 
> cpu_startup_entry
> hppa64-linux-ld: init/main.o(.ref.text+0x164): cannot reach unknown
> hppa64-linux-ld: init/main.o(.ref.text+0x174): cannot reach 
> async_synchronize_full
> hppa64-linux-ld: init/main.o(.ref.text+0x1a4): cannot reach 
> rcu_barrier_sched
> hppa64-linux-ld: init/main.o(.ref.text+0x1b4): cannot reach 
> mark_rodata_ro
> hppa64-linux-ld: init/main.o(.ref.text+0x1d4): cannot reach 
> rcu_end_inkernel_boot
> hppa64-linux-ld: init/main.o(.ref.text+0x1f4): cannot reach unknown
> hppa64-linux-ld: init/main.o(.ref.text+0x218): cannot reach printk
> hppa64-linux-ld: init/main.o(.ref.text+0x238): cannot reach unknown
> hppa64-linux-ld: init/main.o(.ref.text+0x258): cannot reach panic
> hppa64-linux-ld: init/main.o(.ref.text+0x268): cannot reach printk
> hppa64-linux-ld: init/main.o(.ref.text+0x280): cannot reach unknown
> hppa64-linux-ld: init/main.o(.ref.text+0x29c): cannot reach unknown
> hppa64-linux-ld: init/main.o(.ref.text+0x2b8): cannot reach unknown
> hppa64-linux-ld: init/main.o(.ref.text+0x2d4): cannot reach unknown
> hppa64-linux-ld: init/main.o(.ref.text+0x2f0): cannot reach panic
> hppa64-linux-ld: init/do_mounts.o(.text+0x30): cannot reach strncasecmp
> hppa64-linux-ld: init/do_mounts.o(.text+0x158): cannot reach strncmp
> hppa64-linux-ld: init/do_mounts.o(.text+0x180): cannot reach strchr
>
> ...
>
>
> On 07/26/2018 12:59 PM, Helge Deller wrote:
>> * Alex Ghiti <alex@ghiti.fr>:
>>> This is the result of the build for all arches tackled in this series
>>> rebased on 4.18-rc6:
>>> ...
>>> parisc:
>>>          generic-64bit_defconfig: with huge page does not link
>>>          generic-64bit_defconfig: without huge page does not link
>>>          BUT not because of this series, any feedback welcome.
>> Strange, but I will check that later....
>>
>> Anyway, I applied your v4-patch to my parisc64 tree, built the kernel,
>> started it and ran some hugetlb LTP testcases sucessfully.
>> So, please add:
>>
>> Tested-by: Helge Deller <deller@gmx.de> # parisc
>>
>> Helge
>

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Mike Kravetz]

On 07/26/2018 04:46 AM, Michael Ellerman wrote:
> Mike Kravetz <mike.kravetz@oracle.com> writes:
> 
>> On 07/20/2018 11:37 AM, Alex Ghiti wrote:
>>> Does anyone have any suggestion about those patches ?
>>
>> I only took a quick look.  From the hugetlb perspective, I like the
>> idea of moving routines to a common file.  If any of the arch owners
>> (or anyone else) agree, I can do a review of the series.
> 
> The conversions look pretty good to me. If you want to give it a review
> then from my point of view it could go in -mm to shake out any bugs.

Nothing of significance found in a review.  As others have suggested,
the (cross)compiler may be better at finding issues than human eyes.

I also suggest it be added to -mm.
-- 
Mike Kravetz

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Helge Deller]

Hi Alex,

On 26.07.2018 21:13, Alex Ghiti wrote:
> $ make ARCH=parisc O=build_parisc generic-64bit_defconfig
> $ PATH=/home/alex/wip/toolchain/gcc-8.1.0-nolibc/hppa64-linux/bin:$PATH make ARCH=parisc CROSS_COMPILE=hppa64-linux-
> 
>> ...
>>  LD      vmlinux.o
>>  MODPOST vmlinux.o
>> hppa64-linux-ld: init/main.o(.text+0x98): cannot reach strreplace
>> init/main.o: In function `initcall_blacklisted':
>> init/.tmp_main.o:(.text+0x98): relocation truncated to fit: R_PARISC_PCREL22F against symbol `strreplace' defined in .text section in lib/string.o
>> hppa64-linux-ld: init/main.o(.text+0xbc): cannot reach strcmp

In order to be able to link vmlinux, we need to enable 
CONFIG_MLONGCALLS=y in the defconfig.

Nevertheless, I see some modversion issues too which I still need 
to analyze (but that's a completely off-topic issue here).

Helge

Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture primitives

[Alexandre Ghiti]

Hi Mike,

Thanks for your review. I'm going to fix the 2nd patch as you said, 
you're right, no need to move the #include at the bottom of the file.
I'm going to post a v5, add -mm in cc and ask for inclusion in their tree.

Thanks again for your time,

Alex


On 07/26/2018 09:16 PM, Mike Kravetz wrote:
> On 07/26/2018 04:46 AM, Michael Ellerman wrote:
>> Mike Kravetz <mike.kravetz@oracle.com> writes:
>>
>>> On 07/20/2018 11:37 AM, Alex Ghiti wrote:
>>>> Does anyone have any suggestion about those patches ?
>>> I only took a quick look.  From the hugetlb perspective, I like the
>>> idea of moving routines to a common file.  If any of the arch owners
>>> (or anyone else) agree, I can do a review of the series.
>> The conversions look pretty good to me. If you want to give it a review
>> then from my point of view it could go in -mm to shake out any bugs.
> Nothing of significance found in a review.  As others have suggested,
> the (cross)compiler may be better at finding issues than human eyes.
>
> I also suggest it be added to -mm.