| Message ID | 20230612210423.18611-21-vishal.moola@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Split ptdesc from struct page | expand |
On Mon, Jun 12, 2023 at 02:04:09PM -0700, Vishal Moola (Oracle) wrote: > As part of the conversions to replace pgtable constructor/destructors with > ptdesc equivalents, convert various page table functions to use ptdescs. > > late_alloc() also uses the __get_free_pages() helper function. Convert > this to use pagetable_alloc() and ptdesc_address() instead to help > standardize page tables further. > > Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> One comment below. > --- > arch/arm/include/asm/tlb.h | 12 +++++++----- > arch/arm/mm/mmu.c | 6 +++--- > 2 files changed, 10 insertions(+), 8 deletions(-) > > diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h > index b8cbe03ad260..f40d06ad5d2a 100644 > --- a/arch/arm/include/asm/tlb.h > +++ b/arch/arm/include/asm/tlb.h > @@ -39,7 +39,9 @@ static inline void __tlb_remove_table(void *_table) > static inline void > __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) > { > - pgtable_pte_page_dtor(pte); > + struct ptdesc *ptdesc = page_ptdesc(pte); > + > + pagetable_pte_dtor(ptdesc); > > #ifndef CONFIG_ARM_LPAE > /* > @@ -50,17 +52,17 @@ __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) > __tlb_adjust_range(tlb, addr - PAGE_SIZE, 2 * PAGE_SIZE); > #endif > > - tlb_remove_table(tlb, pte); > + tlb_remove_ptdesc(tlb, ptdesc); > } > > static inline void > __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr) > { > #ifdef CONFIG_ARM_LPAE > - struct page *page = virt_to_page(pmdp); > + struct ptdesc *ptdesc = virt_to_ptdesc(pmdp); > > - pgtable_pmd_page_dtor(page); > - tlb_remove_table(tlb, page); > + pagetable_pmd_dtor(ptdesc); > + tlb_remove_ptdesc(tlb, ptdesc); > #endif > } > > diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c > index 22292cf3381c..294518fd0240 100644 > --- a/arch/arm/mm/mmu.c > +++ b/arch/arm/mm/mmu.c > @@ -737,11 +737,11 @@ static void __init *early_alloc(unsigned long sz) > > static void *__init late_alloc(unsigned long sz) > { > - void *ptr = (void *)__get_free_pages(GFP_PGTABLE_KERNEL, get_order(sz)); > + void *ptdesc = pagetable_alloc(GFP_PGTABLE_KERNEL, get_order(sz)); > > - if (!ptr || !pgtable_pte_page_ctor(virt_to_page(ptr))) > + if (!ptdesc || !pagetable_pte_ctor(ptdesc)) > BUG(); > - return ptr; > + return ptdesc; should be return ptdesc_to_virt(ptdesc); > } > > static pte_t * __init arm_pte_alloc(pmd_t *pmd, unsigned long addr, > -- > 2.40.1 > >
diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index b8cbe03ad260..f40d06ad5d2a 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -39,7 +39,9 @@ static inline void __tlb_remove_table(void *_table) static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) { - pgtable_pte_page_dtor(pte); + struct ptdesc *ptdesc = page_ptdesc(pte); + + pagetable_pte_dtor(ptdesc); #ifndef CONFIG_ARM_LPAE /* @@ -50,17 +52,17 @@ __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, unsigned long addr) __tlb_adjust_range(tlb, addr - PAGE_SIZE, 2 * PAGE_SIZE); #endif - tlb_remove_table(tlb, pte); + tlb_remove_ptdesc(tlb, ptdesc); } static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr) { #ifdef CONFIG_ARM_LPAE - struct page *page = virt_to_page(pmdp); + struct ptdesc *ptdesc = virt_to_ptdesc(pmdp); - pgtable_pmd_page_dtor(page); - tlb_remove_table(tlb, page); + pagetable_pmd_dtor(ptdesc); + tlb_remove_ptdesc(tlb, ptdesc); #endif } diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 22292cf3381c..294518fd0240 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -737,11 +737,11 @@ static void __init *early_alloc(unsigned long sz) static void *__init late_alloc(unsigned long sz) { - void *ptr = (void *)__get_free_pages(GFP_PGTABLE_KERNEL, get_order(sz)); + void *ptdesc = pagetable_alloc(GFP_PGTABLE_KERNEL, get_order(sz)); - if (!ptr || !pgtable_pte_page_ctor(virt_to_page(ptr))) + if (!ptdesc || !pagetable_pte_ctor(ptdesc)) BUG(); - return ptr; + return ptdesc; } static pte_t * __init arm_pte_alloc(pmd_t *pmd, unsigned long addr,
As part of the conversions to replace pgtable constructor/destructors with ptdesc equivalents, convert various page table functions to use ptdescs. late_alloc() also uses the __get_free_pages() helper function. Convert this to use pagetable_alloc() and ptdesc_address() instead to help standardize page tables further. Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com> --- arch/arm/include/asm/tlb.h | 12 +++++++----- arch/arm/mm/mmu.c | 6 +++--- 2 files changed, 10 insertions(+), 8 deletions(-)