hugetlb: introduce generic version of huge_ptep_set_wrprotect()

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

Link: http://lkml.kernel.org/r/20180920060358.16606-10-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>

diff --git a/arch/arm/include/asm/hugetlb-3level.h b/arch/arm/include/asm/hugetlb-3level.h
index b897541520efec4cc6396e98b25c92f9b4bbd583..8247cd6a2ac67348d7c70f7ec70e9511d7e2d9e8 100644 (file)
--- 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 3e7f6e69b28deb1a13be71e5f0eb1f36d3da6969..f4f69ae5466e8a822a2ccb6640d95756abe82029 100644 (file)
--- 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 cbe296271030eef7b69b331287368f3d60a1b5a7..49d1f7949f3a58a0c0af308be882de8520ad52a5 100644 (file)
--- 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 6ff2531cfb1dd5f8e34c0c1a38a81684283d0c10..3dcf5debf8c4ac1aff7c4bc1ea4173eae12baa15 100644 (file)
--- 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 fb7e0fd858a37ff50364602f61533f191a4f8b0c..9c3950ca29746fc08f8ec46233ad159e0d0ce272 100644 (file)
--- 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 751cf931bb3f4da228c05c062846d33b60421304..796d026da37eea0001457444aea8bcdaead562db 100644 (file)
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/32/pgtable.h
@@ -221,12 +221,6 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 {
        pte_update(ptep, (_PAGE_RW | _PAGE_HWWRITE), _PAGE_RO);
 }
-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 void __ptep_set_access_flags(struct vm_area_struct *vma,
                                           pte_t *ptep, pte_t entry,

diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 2a2486526d1fc2a6c2ae84ada6601396758360ba..fc69eda5d5885244f7467c299195a7a30bbae25c 100644 (file)
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -461,6 +461,7 @@ 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 a507a65b0866b9907cbf1cce71711c2ef1fa0765..6c82b9660c552218f5504bfe81a493b3dba74cc0 100644 (file)
--- a/arch/powerpc/include/asm/nohash/32/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/32/pgtable.h
@@ -246,12 +246,6 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
 {
        pte_update(ptep, (_PAGE_RW | _PAGE_HWWRITE), _PAGE_RO);
 }
-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 void __ptep_set_access_flags(struct vm_area_struct *vma,
                                           pte_t *ptep, pte_t entry,

diff --git a/arch/powerpc/include/asm/nohash/64/pgtable.h b/arch/powerpc/include/asm/nohash/64/pgtable.h
index 7cd6809f4d332321e5f7eb806693e94fd5915b48..68283e632f048ce86f991bbaa2b9ef9b79840441 100644 (file)
--- a/arch/powerpc/include/asm/nohash/64/pgtable.h
+++ b/arch/powerpc/include/asm/nohash/64/pgtable.h
@@ -239,6 +239,7 @@ 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 f1bbd255ee4386745a5ab160f4038b15c7c334c2..8df4004977b9c0a9ce663632566fc6167eb20eed 100644 (file)
--- 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 2101ea217f33f1887cfd97268eca8f61a729eb00..c41754a113f360a9b3aa4047269a1deec372abd2 100644 (file)
--- 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 59c056adb3c933580e041a8b01a93864a3c6c1e9..a3f781f7a264e6d6d8a6c81a18a351f7d7dfbea0 100644 (file)
--- a/arch/x86/include/asm/hugetlb.h
+++ b/arch/x86/include/asm/hugetlb.h
@@ -13,12 +13,6 @@ 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 6c0c8b0c71e0a920eb564b1113d43146ed315625..9b9039845278479119c996538f3d133250b64d9f 100644 (file)
--- 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 */