From c4916a008665a6650834a736f80559a7f90e5857 Mon Sep 17 00:00:00 2001
From: Alexandre Ghiti <alex@ghiti.fr>
Date: Fri, 26 Oct 2018 15:08:26 -0700
Subject: [PATCH] hugetlb: introduce generic version of huge_pte_wrprotect
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.
Link: http://lkml.kernel.org/r/20180920060358.16606-8-alex@ghiti.fr
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Tested-by: Helge Deller <deller@gmx.de> [parisc]
Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64]
Acked-by: Paul Burton <paul.burton@mips.com> [MIPS]
Acked-by: Ingo Molnar <mingo@kernel.org> [x86]
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
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 c821b550d6a4d..9ca14227eeb7f 100644
--- a/arch/arm/include/asm/hugetlb.h
+++ b/arch/arm/include/asm/hugetlb.h
@@ -44,11 +44,6 @@ 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 49247c6f94db9..1fd64ebf0cd71 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 bf573500b3c42..82fe3d7a38d95 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 1c9c4531376c9..b3d6bb53ee6ee 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 c09d8c74553c3..5a102d7251e4c 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 6a534353c8eb5..b5b57b3095645 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -149,11 +149,6 @@ 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 a9f8266f33cf2..54f65094efe6a 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 11115bbd712e1..f661362376e0c 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 42d8720547919..3cd3a2c9840ec 100644
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -28,11 +28,6 @@ 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 2fc3d68424e90..cd9697672b796 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 */
--
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