The patch titled
Subject: mm: define general function pXd_init()
has been added to the -mm mm-unstable branch. Its filename is
mm-define-general-function-pxd_init.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-define-general-function-pxd_init.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Bibo Mao <maobibo@xxxxxxxxxxx>
Subject: mm: define general function pXd_init()
Date: Mon, 4 Nov 2024 15:07:12 +0800
pud_init(), pmd_init() and kernel_pte_init() are duplicated defined in
file kasan.c and sparse-vmemmap.c as weak functions. Move them to generic
header file pgtable.h, architecture can redefine them.
Link: https://lkml.kernel.org/r/20241104070712.52902-1-maobibo@xxxxxxxxxxx
Signed-off-by: Bibo Mao <maobibo@xxxxxxxxxxx>
Reviewed-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>
Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>
Cc: WANG Xuerui <kernel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/loongarch/include/asm/pgtable.h | 3 +++
arch/mips/include/asm/pgtable-64.h | 2 ++
include/linux/mm.h | 3 ---
include/linux/pgtable.h | 21 +++++++++++++++++++++
mm/kasan/init.c | 12 ------------
mm/sparse-vmemmap.c | 12 ------------
6 files changed, 26 insertions(+), 27 deletions(-)
--- a/arch/loongarch/include/asm/pgtable.h~mm-define-general-function-pxd_init
+++ a/arch/loongarch/include/asm/pgtable.h
@@ -268,8 +268,11 @@ extern void set_pmd_at(struct mm_struct
*/
extern void pgd_init(void *addr);
extern void pud_init(void *addr);
+#define pud_init pud_init
extern void pmd_init(void *addr);
+#define pmd_init pmd_init
extern void kernel_pte_init(void *addr);
+#define kernel_pte_init kernel_pte_init
/*
* Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that
--- a/arch/mips/include/asm/pgtable-64.h~mm-define-general-function-pxd_init
+++ a/arch/mips/include/asm/pgtable-64.h
@@ -317,7 +317,9 @@ static inline pmd_t *pud_pgtable(pud_t p
*/
extern void pgd_init(void *addr);
extern void pud_init(void *addr);
+#define pud_init pud_init
extern void pmd_init(void *addr);
+#define pmd_init pmd_init
/*
* Encode/decode swap entries and swap PTEs. Swap PTEs are all PTEs that
--- a/include/linux/mm.h~mm-define-general-function-pxd_init
+++ a/include/linux/mm.h
@@ -3819,9 +3819,6 @@ void *sparse_buffer_alloc(unsigned long
struct page * __populate_section_memmap(unsigned long pfn,
unsigned long nr_pages, int nid, struct vmem_altmap *altmap,
struct dev_pagemap *pgmap);
-void pud_init(void *addr);
-void pmd_init(void *addr);
-void kernel_pte_init(void *addr);
pgd_t *vmemmap_pgd_populate(unsigned long addr, int node);
p4d_t *vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node);
pud_t *vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node);
--- a/include/linux/pgtable.h~mm-define-general-function-pxd_init
+++ a/include/linux/pgtable.h
@@ -90,6 +90,27 @@ static inline unsigned long pud_index(un
#define pgd_index(a) (((a) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1))
#endif
+#ifndef kernel_pte_init
+static inline void kernel_pte_init(void *addr)
+{
+}
+#define kernel_pte_init kernel_pte_init
+#endif
+
+#ifndef pmd_init
+static inline void pmd_init(void *addr)
+{
+}
+#define pmd_init pmd_init
+#endif
+
+#ifndef pud_init
+static inline void pud_init(void *addr)
+{
+}
+#define pud_init pud_init
+#endif
+
#ifndef pte_offset_kernel
static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
{
--- a/mm/kasan/init.c~mm-define-general-function-pxd_init
+++ a/mm/kasan/init.c
@@ -106,10 +106,6 @@ static void __ref zero_pte_populate(pmd_
}
}
-void __weak __meminit kernel_pte_init(void *addr)
-{
-}
-
static int __ref zero_pmd_populate(pud_t *pud, unsigned long addr,
unsigned long end)
{
@@ -145,10 +141,6 @@ static int __ref zero_pmd_populate(pud_t
return 0;
}
-void __weak __meminit pmd_init(void *addr)
-{
-}
-
static int __ref zero_pud_populate(p4d_t *p4d, unsigned long addr,
unsigned long end)
{
@@ -187,10 +179,6 @@ static int __ref zero_pud_populate(p4d_t
return 0;
}
-void __weak __meminit pud_init(void *addr)
-{
-}
-
static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
unsigned long end)
{
--- a/mm/sparse-vmemmap.c~mm-define-general-function-pxd_init
+++ a/mm/sparse-vmemmap.c
@@ -184,10 +184,6 @@ static void * __meminit vmemmap_alloc_bl
return p;
}
-void __weak __meminit kernel_pte_init(void *addr)
-{
-}
-
pmd_t * __meminit vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node)
{
pmd_t *pmd = pmd_offset(pud, addr);
@@ -201,10 +197,6 @@ pmd_t * __meminit vmemmap_pmd_populate(p
return pmd;
}
-void __weak __meminit pmd_init(void *addr)
-{
-}
-
pud_t * __meminit vmemmap_pud_populate(p4d_t *p4d, unsigned long addr, int node)
{
pud_t *pud = pud_offset(p4d, addr);
@@ -218,10 +210,6 @@ pud_t * __meminit vmemmap_pud_populate(p
return pud;
}
-void __weak __meminit pud_init(void *addr)
-{
-}
-
p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node)
{
p4d_t *p4d = p4d_offset(pgd, addr);
_
Patches currently in -mm which might be from maobibo@xxxxxxxxxxx are
mm-define-general-function-pxd_init.patch
