From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Vishal Moola (Oracle)" Subject: [PATCH v5 24/33] m68k: Convert various functions to use ptdescs Date: Thu, 22 Jun 2023 13:57:36 -0700 Message-ID: <20230622205745.79707-25-vishal.moola@gmail.com> References: <20230622205745.79707-1-vishal.moola@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: List-Id: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687467525; x=1690059525; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=hySW7brzBg7/Cj99gTTdUd3MvFvqZB/M9ynkCaO3FFc=; b=kdBMDjj5wIp60ZYLcmWrdpMg4HGlypB71kW8hDPlIqh35A3b+v1T4Y1ydaWZz/xhee ZA5Wg86cVGIjXA/B7jKyd7KddQnHiyBrO7oSeao90//6ecohToH/3Eu0AvlHwhcP3OFV 2LpxjpRaH/c4lq6Z4eUITJ7RmwHPPRTtaIS3uYsOOd8x22FkyOEoLStjCJ6IEsjRHWMb 9n4Ph82ODGWg2AiQDJBhn0Lv8MIpG0JlDo4by6Q29EoMH8NyeBmUg+qti5r0raRohKmw K67ualO2cW/10KKjteAwcv5HaO3xkHdj+vI7ODmKcr0ceaF2dvSo3pCSjKcanq/h5Cgw ij4Q== In-Reply-To: <20230622205745.79707-1-vishal.moola@gmail.com> Content-Type: text/plain; charset="us-ascii" To: Andrew Morton , Matthew Wilcox Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, Hugh Dickins , "Vishal Moola (Oracle)" , Geert Uytterhoeven , Mike Rapoport As part of the conversions to replace pgtable constructor/destructors with ptdesc equivalents, convert various page table functions to use ptdescs. Some of the functions use the *get*page*() helper functions. Convert these to use pagetable_alloc() and ptdesc_address() instead to help standardize page tables further. Signed-off-by: Vishal Moola (Oracle) Acked-by: Mike Rapoport (IBM) Acked-by: Geert Uytterhoeven --- arch/m68k/include/asm/mcf_pgalloc.h | 43 ++++++++++++++-------------- arch/m68k/include/asm/sun3_pgalloc.h | 8 +++--- arch/m68k/mm/motorola.c | 4 +-- 3 files changed, 28 insertions(+), 27 deletions(-) diff --git a/arch/m68k/include/asm/mcf_pgalloc.h b/arch/m68k/include/asm/mcf_pgalloc.h index 5c2c0a864524..790ade4e778e 100644 --- a/arch/m68k/include/asm/mcf_pgalloc.h +++ b/arch/m68k/include/asm/mcf_pgalloc.h @@ -7,20 +7,20 @@ extern 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) { - 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) \ -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)); } 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) { -- 2.40.1