The patch titled
Subject: hugetlb: introduce generic version of huge_ptep_get
has been added to the -mm tree. Its filename is
hugetlb-introduce-generic-version-of-huge_ptep_get.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/hugetlb-introduce-generic-version-of-huge_ptep_get.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/hugetlb-introduce-generic-version-of-huge_ptep_get.patch
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------------------------------------------------------
From: Alexandre Ghiti <alex@xxxxxxxx>
Subject: hugetlb: introduce generic version of huge_ptep_get
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.
Link: http://lkml.kernel.org/r/20180920060358.16606-12-alex@xxxxxxxx
Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx>
Reviewed-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Tested-by: Helge Deller <deller@xxxxxx> [parisc]
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> [arm64]
Acked-by: Paul Burton <paul.burton@xxxxxxxx> [MIPS]
Acked-by: Ingo Molnar <mingo@xxxxxxxxxx> [x86]
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Fenghua Yu <fenghua.yu@xxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: James E.J. Bottomley <jejb@xxxxxxxxxxxxxxxx>
Cc: James Hogan <jhogan@xxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Rich Felker <dalias@xxxxxxxx>
Cc: Russell King <linux@xxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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(-)
--- a/arch/arm64/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/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);
--- a/arch/arm/include/asm/hugetlb-3level.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/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;
--- a/arch/ia64/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/arch/ia64/include/asm/hugetlb.h
@@ -27,11 +27,6 @@ static inline void huge_ptep_clear_flush
{
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
--- a/arch/mips/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/arch/mips/include/asm/hugetlb.h
@@ -82,11 +82,6 @@ static inline int huge_ptep_set_access_f
return changed;
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
--- a/arch/parisc/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/arch/parisc/include/asm/hugetlb.h
@@ -48,11 +48,6 @@ int huge_ptep_set_access_flags(struct vm
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)
{
}
--- a/arch/powerpc/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/arch/powerpc/include/asm/hugetlb.h
@@ -139,11 +139,6 @@ extern int huge_ptep_set_access_flags(st
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)
{
}
--- a/arch/sh/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/arch/sh/include/asm/hugetlb.h
@@ -32,11 +32,6 @@ static inline void huge_ptep_clear_flush
{
}
-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);
--- a/arch/sparc/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/arch/sparc/include/asm/hugetlb.h
@@ -53,11 +53,6 @@ static inline int huge_ptep_set_access_f
return changed;
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
--- a/arch/x86/include/asm/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/arch/x86/include/asm/hugetlb.h
@@ -13,11 +13,6 @@ static inline int is_hugepage_only_range
return 0;
}
-static inline pte_t huge_ptep_get(pte_t *ptep)
-{
- return *ptep;
-}
-
static inline void arch_clear_hugepage_flags(struct page *page)
{
}
--- a/include/asm-generic/hugetlb.h~hugetlb-introduce-generic-version-of-huge_ptep_get
+++ a/include/asm-generic/hugetlb.h
@@ -119,4 +119,11 @@ static inline int huge_ptep_set_access_f
}
#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 */
_
Patches currently in -mm which might be from alex@xxxxxxxx are
hugetlb-harmonize-hugetlbh-arch-specific-defines-with-pgtableh.patch
hugetlb-introduce-generic-version-of-hugetlb_free_pgd_range.patch
hugetlb-introduce-generic-version-of-set_huge_pte_at.patch
hugetlb-introduce-generic-version-of-huge_ptep_get_and_clear.patch
hugetlb-introduce-generic-version-of-huge_ptep_clear_flush.patch
hugetlb-introduce-generic-version-of-huge_pte_none.patch
hugetlb-introduce-generic-version-of-huge_pte_wrprotect.patch
hugetlb-introduce-generic-version-of-prepare_hugepage_range.patch
hugetlb-introduce-generic-version-of-huge_ptep_set_wrprotect.patch
hugetlb-introduce-generic-version-of-huge_ptep_set_access_flags.patch
hugetlb-introduce-generic-version-of-huge_ptep_get.patch
