Inter-revision diff: patch 24

Comparing v6 (message) to v3 (message)

--- v6
+++ v3
@@ -6,160 +6,89 @@
 standardize page tables further.
 
 Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
-Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
-Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
 ---
- arch/m68k/include/asm/mcf_pgalloc.h  | 47 ++++++++++++++--------------
- arch/m68k/include/asm/sun3_pgalloc.h |  8 ++---
- arch/m68k/mm/motorola.c              |  4 +--
- 3 files changed, 30 insertions(+), 29 deletions(-)
+ arch/loongarch/include/asm/pgalloc.h | 27 +++++++++++++++------------
+ arch/loongarch/mm/pgtable.c          |  7 ++++---
+ 2 files changed, 19 insertions(+), 15 deletions(-)
 
-diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h
-index 5c2c0a864524..302c5bf67179 100644
---- a/arch/m68k/include/asm/mcf_pgalloc.h
-+++ b/arch/m68k/include/asm/mcf_pgalloc.h
-@@ -5,22 +5,22 @@
- #include <asm/tlb.h>
- #include <asm/tlbflush.h>
+diff --git a/arch/loongarch/include/asm/pgalloc.h b/arch/loongarch/include/asm/pgalloc.h
+index af1d1e4a6965..5f5afbf1f10c 100644
+--- a/arch/loongarch/include/asm/pgalloc.h
++++ b/arch/loongarch/include/asm/pgalloc.h
+@@ -45,9 +45,9 @@ extern void pagetable_init(void);
+ extern pgd_t *pgd_alloc(struct mm_struct *mm);
  
--extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
- {
--	free_page((unsigned long) pte);
-+	pagetable_free(virt_to_ptdesc(pte));
- }
- 
- extern const char bad_pmd_string[];
- 
--extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
-+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
- {
--	unsigned long page = __get_free_page(GFP_DMA);
-+	struct ptdesc *ptdesc = pagetable_alloc((GFP_DMA | __GFP_ZERO) &
-+			~__GFP_HIGHMEM, 0);
- 
--	if (!page)
-+	if (!ptdesc)
- 		return NULL;
- 
--	memset((void *)page, 0, PAGE_SIZE);
--	return (pte_t *) (page);
-+	return ptdesc_address(ptdesc);
- }
- 
- extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
-@@ -35,36 +35,34 @@ extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
- static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pgtable,
- 				  unsigned long address)
- {
--	struct page *page = virt_to_page(pgtable);
-+	struct ptdesc *ptdesc = virt_to_ptdesc(pgtable);
- 
--	pgtable_pte_page_dtor(page);
--	__free_page(page);
-+	pagetable_pte_dtor(ptdesc);
-+	pagetable_free(ptdesc);
- }
- 
- static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
- {
--	struct page *page = alloc_pages(GFP_DMA, 0);
-+	struct ptdesc *ptdesc = pagetable_alloc(GFP_DMA | __GFP_ZERO, 0);
- 	pte_t *pte;
- 
--	if (!page)
-+	if (!ptdesc)
- 		return NULL;
--	if (!pgtable_pte_page_ctor(page)) {
--		__free_page(page);
-+	if (!pagetable_pte_ctor(ptdesc)) {
-+		pagetable_free(ptdesc);
- 		return NULL;
- 	}
- 
--	pte = page_address(page);
--	clear_page(pte);
--
-+	pte = ptdesc_address(ptdesc);
- 	return pte;
- }
- 
- static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
- {
--	struct page *page = virt_to_page(pgtable);
-+	struct ptdesc *ptdesc = virt_to_ptdesc(pgtable);
- 
--	pgtable_pte_page_dtor(page);
--	__free_page(page);
-+	pagetable_pte_dtor(ptdesc);
-+	pagetable_free(ptdesc);
- }
- 
- /*
-@@ -75,16 +73,19 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pgtable)
- 
- static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
- {
--	free_page((unsigned long) pgd);
-+	pagetable_free(virt_to_ptdesc(pgd));
- }
- 
- static inline pgd_t *pgd_alloc(struct mm_struct *mm)
- {
- 	pgd_t *new_pgd;
-+	struct ptdesc *ptdesc = pagetable_alloc((GFP_DMA | __GFP_NOWARN) &
-+			~__GFP_HIGHMEM, 0);
- 
--	new_pgd = (pgd_t *)__get_free_page(GFP_DMA | __GFP_NOWARN);
--	if (!new_pgd)
-+	if (!ptdesc)
- 		return NULL;
-+	new_pgd = ptdesc_address(ptdesc);
-+
- 	memcpy(new_pgd, swapper_pg_dir, PTRS_PER_PGD * sizeof(pgd_t));
- 	memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
- 	return new_pgd;
-diff --git a/arch/m68k/include/asm/sun3_pgalloc.h b/arch/m68k/include/asm/sun3_pgalloc.h
-index 198036aff519..ff48573db2c0 100644
---- a/arch/m68k/include/asm/sun3_pgalloc.h
-+++ b/arch/m68k/include/asm/sun3_pgalloc.h
-@@ -17,10 +17,10 @@
- 
- extern const char bad_pmd_string[];
- 
--#define __pte_free_tlb(tlb,pte,addr)			\
+ #define __pte_free_tlb(tlb, pte, address)			\
 -do {							\
 -	pgtable_pte_page_dtor(pte);			\
 -	tlb_remove_page((tlb), pte);			\
-+#define __pte_free_tlb(tlb, pte, addr)				\
 +do {								\
 +	pagetable_pte_dtor(page_ptdesc(pte));			\
 +	tlb_remove_page_ptdesc((tlb), page_ptdesc(pte));	\
  } while (0)
  
- static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte)
-diff --git a/arch/m68k/mm/motorola.c b/arch/m68k/mm/motorola.c
-index c75984e2d86b..594575a0780c 100644
---- a/arch/m68k/mm/motorola.c
-+++ b/arch/m68k/mm/motorola.c
-@@ -161,7 +161,7 @@ void *get_pointer_table(int type)
- 			 * m68k doesn't have SPLIT_PTE_PTLOCKS for not having
- 			 * SMP.
- 			 */
--			pgtable_pte_page_ctor(virt_to_page(page));
-+			pagetable_pte_ctor(virt_to_ptdesc(page));
- 		}
+ #ifndef __PAGETABLE_PMD_FOLDED
+@@ -55,18 +55,18 @@ do {							\
+ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+ {
+ 	pmd_t *pmd;
+-	struct page *pg;
++	struct ptdesc *ptdesc;
  
- 		mmu_page_ctor(page);
-@@ -201,7 +201,7 @@ int free_pointer_table(void *table, int type)
- 		list_del(dp);
- 		mmu_page_dtor((void *)page);
- 		if (type == TABLE_PTE)
--			pgtable_pte_page_dtor(virt_to_page((void *)page));
-+			pagetable_pte_dtor(virt_to_ptdesc((void *)page));
- 		free_page (page);
- 		return 1;
- 	} else if (ptable_list[type].next != dp) {
+-	pg = alloc_page(GFP_KERNEL_ACCOUNT);
+-	if (!pg)
++	ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, 0);
++	if (!ptdesc)
+ 		return NULL;
+ 
+-	if (!pgtable_pmd_page_ctor(pg)) {
+-		__free_page(pg);
++	if (!pagetable_pmd_ctor(ptdesc)) {
++		pagetable_free(ptdesc);
+ 		return NULL;
+ 	}
+ 
+-	pmd = (pmd_t *)page_address(pg);
++	pmd = (pmd_t *)ptdesc_address(ptdesc);
+ 	pmd_init(pmd);
+ 	return pmd;
+ }
+@@ -80,10 +80,13 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
+ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)
+ {
+ 	pud_t *pud;
++	struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL, 0);
+ 
+-	pud = (pud_t *) __get_free_page(GFP_KERNEL);
+-	if (pud)
+-		pud_init(pud);
++	if (!ptdesc)
++		return NULL;
++	pud = (pud_t *)ptdesc_address(ptdesc);
++
++	pud_init(pud);
+ 	return pud;
+ }
+ 
+diff --git a/arch/loongarch/mm/pgtable.c b/arch/loongarch/mm/pgtable.c
+index 36a6dc0148ae..cdba10ffc0df 100644
+--- a/arch/loongarch/mm/pgtable.c
++++ b/arch/loongarch/mm/pgtable.c
+@@ -11,10 +11,11 @@
+ 
+ pgd_t *pgd_alloc(struct mm_struct *mm)
+ {
+-	pgd_t *ret, *init;
++	pgd_t *init, *ret = NULL;
++	struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL, 0);
+ 
+-	ret = (pgd_t *) __get_free_page(GFP_KERNEL);
+-	if (ret) {
++	if (ptdesc) {
++		ret = (pgd_t *)ptdesc_address(ptdesc);
+ 		init = pgd_offset(&init_mm, 0UL);
+ 		pgd_init(ret);
+ 		memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
 -- 
 2.40.1
 
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