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MIPS&LoongArch&NIOS2: adjust prototypes of p?d_init()

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Patch series "mm/sparse-vmemmap: Generalise helpers and enable for
LoongArch", v14.

This series is in order to enable sparse-vmemmap for LoongArch.  But
LoongArch cannot use generic helpers directly because MIPS&LoongArch need
to call pgd_init()/pud_init()/pmd_init() when populating page tables.  So
we adjust the prototypes of p?d_init() to make generic helpers can call
them, then enable sparse-vmemmap with generic helpers, and to be further,
generalise vmemmap_populate_hugepages() for ARM64, X86 and LoongArch.


This patch (of 4):

We are preparing to add sparse vmemmap support to LoongArch.  MIPS and
LoongArch need to call pgd_init()/pud_init()/pmd_init() when populating
page tables, so adjust their prototypes to make generic helpers can call
them.

NIOS2 declares pmd_init() but doesn't use, just remove it to avoid build
errors.

Link: https://lkml.kernel.org/r/20221027125253.3458989-1-chenhuacai@loongson.cn
Link: https://lkml.kernel.org/r/20221027125253.3458989-2-chenhuacai@loongson.cn
Signed-off-by: Feiyang Chen <chenfeiyang@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Will Deacon <will@kernel.org>
Cc: Xuefeng Li <lixuefeng@loongson.cn>
Cc: Xuerui Wang <kernel@xen0n.name>
Cc: Min Zhou <zhoumin@loongson.cn>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Feiyang Chen 2022-10-27 20:52:50 +08:00 committed by Andrew Morton
parent 85716a80c1
commit 22c4e80466
11 changed files with 46 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/loongarch/include/asm/pgalloc.h
View File

@ -42,15 +42,6 @@ static inline void p4d_populate(struct mm_struct *mm, p4d_t *p4d, pud_t *pud)
extern void pagetable_init(void);
/*
* Initialize a new pmd table with invalid pointers.
*/
extern void pmd_init(unsigned long page, unsigned long pagetable);
/*
* Initialize a new pgd / pmd table with invalid pointers.
*/
extern void pgd_init(unsigned long page);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
#define __pte_free_tlb(tlb, pte, address) \
@ -76,7 +67,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
}
pmd = (pmd_t *)page_address(pg);
pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
pmd_init(pmd);
return pmd;
}
@ -92,7 +83,7 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
pud = (pud_t *) __get_free_page(GFP_KERNEL);
if (pud)
pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
pud_init(pud);
return pud;
}

8
arch/loongarch/include/asm/pgtable.h
View File

@ -237,11 +237,11 @@ extern void set_pmd_at(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, pm
#define pfn_pmd(pfn, prot) __pmd(((pfn) << _PFN_SHIFT) | pgprot_val(prot))
/*
* Initialize a new pgd / pmd table with invalid pointers.
* Initialize a new pgd / pud / pmd table with invalid pointers.
*/
extern void pgd_init(unsigned long page);
extern void pud_init(unsigned long page, unsigned long pagetable);
extern void pmd_init(unsigned long page, unsigned long pagetable);
extern void pgd_init(void *addr);
extern void pud_init(void *addr);
extern void pmd_init(void *addr);
/*
* Non-present pages: high 40 bits are offset, next 8 bits type,

4
arch/loongarch/kernel/numa.c
View File

@ -78,7 +78,7 @@ void __init pcpu_populate_pte(unsigned long addr)
new = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
pgd_populate(&init_mm, pgd, new);
#ifndef __PAGETABLE_PUD_FOLDED
pud_init((unsigned long)new, (unsigned long)invalid_pmd_table);
pud_init(new);
#endif
}
@ -89,7 +89,7 @@ void __init pcpu_populate_pte(unsigned long addr)
new = memblock_alloc(PAGE_SIZE, PAGE_SIZE);
pud_populate(&init_mm, pud, new);
#ifndef __PAGETABLE_PMD_FOLDED
pmd_init((unsigned long)new, (unsigned long)invalid_pte_table);
pmd_init(new);
#endif
}

23
arch/loongarch/mm/pgtable.c
View File

@ -16,7 +16,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
ret = (pgd_t *) __get_free_page(GFP_KERNEL);
if (ret) {
init = pgd_offset(&init_mm, 0UL);
pgd_init((unsigned long)ret);
pgd_init(ret);
memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
}
@ -25,7 +25,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
}
EXPORT_SYMBOL_GPL(pgd_alloc);
void pgd_init(unsigned long page)
void pgd_init(void *addr)
{
unsigned long *p, *end;
unsigned long entry;
@ -38,7 +38,7 @@ void pgd_init(unsigned long page)
entry = (unsigned long)invalid_pte_table;
#endif
p = (unsigned long *) page;
p = (unsigned long *)addr;
end = p + PTRS_PER_PGD;
do {
@ -56,11 +56,12 @@ void pgd_init(unsigned long page)
EXPORT_SYMBOL_GPL(pgd_init);
#ifndef __PAGETABLE_PMD_FOLDED
void pmd_init(unsigned long addr, unsigned long pagetable)
void pmd_init(void *addr)
{
unsigned long *p, *end;
unsigned long pagetable = (unsigned long)invalid_pte_table;
p = (unsigned long *) addr;
p = (unsigned long *)addr;
end = p + PTRS_PER_PMD;
do {
@ -79,9 +80,10 @@ EXPORT_SYMBOL_GPL(pmd_init);
#endif
#ifndef __PAGETABLE_PUD_FOLDED
void pud_init(unsigned long addr, unsigned long pagetable)
void pud_init(void *addr)
{
unsigned long *p, *end;
unsigned long pagetable = (unsigned long)invalid_pmd_table;
p = (unsigned long *)addr;
end = p + PTRS_PER_PUD;
@ -98,6 +100,7 @@ void pud_init(unsigned long addr, unsigned long pagetable)
p[-1] = pagetable;
} while (p != end);
}
EXPORT_SYMBOL_GPL(pud_init);
#endif
pmd_t mk_pmd(struct page *page, pgprot_t prot)
@ -119,12 +122,12 @@ void set_pmd_at(struct mm_struct *mm, unsigned long addr,
void __init pagetable_init(void)
{
/* Initialize the entire pgd. */
pgd_init((unsigned long)swapper_pg_dir);
pgd_init((unsigned long)invalid_pg_dir);
pgd_init(swapper_pg_dir);
pgd_init(invalid_pg_dir);
#ifndef __PAGETABLE_PUD_FOLDED
pud_init((unsigned long)invalid_pud_table, (unsigned long)invalid_pmd_table);
pud_init(invalid_pud_table);
#endif
#ifndef __PAGETABLE_PMD_FOLDED
pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table);
pmd_init(invalid_pmd_table);
#endif
}

10
arch/mips/include/asm/pgalloc.h
View File

@ -33,7 +33,7 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
/*
* Initialize a new pmd table with invalid pointers.
*/
extern void pmd_init(unsigned long page, unsigned long pagetable);
extern void pmd_init(void *addr);
#ifndef __PAGETABLE_PMD_FOLDED
@ -44,9 +44,9 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
#endif
/*
* Initialize a new pgd / pmd table with invalid pointers.
* Initialize a new pgd table with invalid pointers.
*/
extern void pgd_init(unsigned long page);
extern void pgd_init(void *addr);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
@ -77,7 +77,7 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
}
pmd = (pmd_t *)page_address(pg);
pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
pmd_init(pmd);
return pmd;
}
@ -93,7 +93,7 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_TABLE_ORDER);
if (pud)
pud_init((unsigned long)pud, (unsigned long)invalid_pmd_table);
pud_init(pud);
return pud;
}

8
arch/mips/include/asm/pgtable-64.h
View File

@ -313,11 +313,11 @@ static inline pmd_t *pud_pgtable(pud_t pud)
#endif
/*
* Initialize a new pgd / pmd table with invalid pointers.
* Initialize a new pgd / pud / pmd table with invalid pointers.
*/
extern void pgd_init(unsigned long page);
extern void pud_init(unsigned long page, unsigned long pagetable);
extern void pmd_init(unsigned long page, unsigned long pagetable);
extern void pgd_init(void *addr);
extern void pud_init(void *addr);
extern void pmd_init(void *addr);
/*
* Non-present pages: high 40 bits are offset, next 8 bits type,

3
arch/mips/kvm/mmu.c
View File

@ -122,8 +122,7 @@ static pte_t *kvm_mips_walk_pgd(pgd_t *pgd, struct kvm_mmu_memory_cache *cache,
if (!cache)
return NULL;
new_pmd = kvm_mmu_memory_cache_alloc(cache);
pmd_init((unsigned long)new_pmd,
(unsigned long)invalid_pte_table);
pmd_init(new_pmd);
pud_populate(NULL, pud, new_pmd);
}
pmd = pmd_offset(pud, addr);

9
arch/mips/mm/pgtable-32.c
View File

@ -13,9 +13,9 @@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
void pgd_init(unsigned long page)
void pgd_init(void *addr)
{
unsigned long *p = (unsigned long *) page;
unsigned long *p = (unsigned long *)addr;
int i;
for (i = 0; i < USER_PTRS_PER_PGD; i+=8) {
@ -61,9 +61,8 @@ void __init pagetable_init(void)
#endif
/* Initialize the entire pgd. */
pgd_init((unsigned long)swapper_pg_dir);
pgd_init((unsigned long)swapper_pg_dir
+ sizeof(pgd_t) * USER_PTRS_PER_PGD);
pgd_init(swapper_pg_dir);
pgd_init(&swapper_pg_dir[USER_PTRS_PER_PGD]);
pgd_base = swapper_pg_dir;

18
arch/mips/mm/pgtable-64.c
View File

@ -13,7 +13,7 @@
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
void pgd_init(unsigned long page)
void pgd_init(void *addr)
{
unsigned long *p, *end;
unsigned long entry;
@ -26,7 +26,7 @@ void pgd_init(unsigned long page)
entry = (unsigned long)invalid_pte_table;
#endif
p = (unsigned long *) page;
p = (unsigned long *) addr;
end = p + PTRS_PER_PGD;
do {
@ -43,11 +43,12 @@ void pgd_init(unsigned long page)
}
#ifndef __PAGETABLE_PMD_FOLDED
void pmd_init(unsigned long addr, unsigned long pagetable)
void pmd_init(void *addr)
{
unsigned long *p, *end;
unsigned long pagetable = (unsigned long)invalid_pte_table;
p = (unsigned long *) addr;
p = (unsigned long *)addr;
end = p + PTRS_PER_PMD;
do {
@ -66,9 +67,10 @@ EXPORT_SYMBOL_GPL(pmd_init);
#endif
#ifndef __PAGETABLE_PUD_FOLDED
void pud_init(unsigned long addr, unsigned long pagetable)
void pud_init(void *addr)
{
unsigned long *p, *end;
unsigned long pagetable = (unsigned long)invalid_pmd_table;
p = (unsigned long *)addr;
end = p + PTRS_PER_PUD;
@ -108,12 +110,12 @@ void __init pagetable_init(void)
pgd_t *pgd_base;
/* Initialize the entire pgd. */
pgd_init((unsigned long)swapper_pg_dir);
pgd_init(swapper_pg_dir);
#ifndef __PAGETABLE_PUD_FOLDED
pud_init((unsigned long)invalid_pud_table, (unsigned long)invalid_pmd_table);
pud_init(invalid_pud_table);
#endif
#ifndef __PAGETABLE_PMD_FOLDED
pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table);
pmd_init(invalid_pmd_table);
#endif
pgd_base = swapper_pg_dir;
/*

2
arch/mips/mm/pgtable.c
View File

@ -15,7 +15,7 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_TABLE_ORDER);
if (ret) {
init = pgd_offset(&init_mm, 0UL);
pgd_init((unsigned long)ret);
pgd_init(ret);
memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
}

5
arch/nios2/include/asm/pgalloc.h
View File

@ -26,11 +26,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
}
/*
* Initialize a new pmd table with invalid pointers.
*/
extern void pmd_init(unsigned long page, unsigned long pagetable);
extern pgd_t *pgd_alloc(struct mm_struct *mm);
#define __pte_free_tlb(tlb, pte, addr) \