From patchwork Tue Jul 25 04:20:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13325799 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 93121C19F4F for ; Tue, 25 Jul 2023 04:25:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232006AbjGYEZO (ORCPT ); Tue, 25 Jul 2023 00:25:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53110 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231898AbjGYEYL (ORCPT ); Tue, 25 Jul 2023 00:24:11 -0400 Received: from mail-yw1-x112d.google.com (mail-yw1-x112d.google.com [IPv6:2607:f8b0:4864:20::112d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9DCFC30E2; Mon, 24 Jul 2023 21:21:58 -0700 (PDT) Received: by mail-yw1-x112d.google.com with SMTP id 00721157ae682-5774335bb2aso56807957b3.0; Mon, 24 Jul 2023 21:21:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1690258914; x=1690863714; 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=PAg5qbCpsu4QeXC2CiYcNVSx9jEaugPagVbNncebk84=; b=PXib1CaoeptK69/6qIILztnTaPIyTv5YQR6TlThXrcj/XpnovRKNC9dRvmGTlMVJ+Y 8clpfWi14Fbd16+bMMcIRSu1RjPFhxm0HGFSqSbVNLXv71Rm3nby7GTQmmhFhxR6Fe4W a+uFGPq1sDojuKpfGHqkLm54qltGyV31LmZTGF+k48o1qYH0m7DJawnWKwrZ6fgwSg9U SkV3boxZmuDGmlSDQsQA0yQXTmRpMU2gDvzpay51JFwtkFxUR2TcnLVayYqi4qXpl0OW +6iL34M/ESeTyP1F7hG3vKsG74iuD4sY6ImSrnr2BOLiIrK5HdmfLQg1v5h+YsRalPF6 ymFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1690258914; x=1690863714; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=PAg5qbCpsu4QeXC2CiYcNVSx9jEaugPagVbNncebk84=; b=fnkm1pyZagx+tWTE0zKzccMtvST9XhgF1S8zDT296kKtrcNE7leu0g8N4FPUhD/PLB 2m34mpJF3mc9mGjn8RYbOYVYqUowpsbpoYw1UpPfk6d+lYlzvK5cL7/vkFzB944EAXf7 5g4yMoogcBH7TrxtAu0CBqxjP4BSIJzHOKSdpqu/wGoZcshXeQWGxtjyK2Ut24GjECKZ h3NzLlIrmelw4kku+R/7IDthIuN631zongTkOe/371+LbZ+TLG69yJbsF5ccdCfD+QF+ XGCG1lvoU9QmLeWDDJRW/2+rAnwdONrM9+lo2Nhgp8Duc2t/FhGrgR3Ey2+Z4VgANQLG hGuA== X-Gm-Message-State: ABy/qLYXz3zWIwKPDAnozRURujfeCpBXFuPt+oRoWCkthnWULEnVBwQb nyS3lo3iVbr7Te3Bo5PHj6c= X-Google-Smtp-Source: APBJJlHF/0iqvuKN3GeuQCQLqa/Csn12p4p6+Y/7f8hKrU53tH/yWNA7sehk6j4tDPYcgh4VwiCADg== X-Received: by 2002:a25:d57:0:b0:d06:7064:5209 with SMTP id 84-20020a250d57000000b00d0670645209mr6311982ybn.22.1690258913820; Mon, 24 Jul 2023 21:21:53 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id h9-20020a25b189000000b00d0db687ef48sm1175540ybj.61.2023.07.24.21.21.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Jul 2023 21:21:53 -0700 (PDT) From: "Vishal Moola (Oracle)" 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)" , Mike Rapoport , Geert Uytterhoeven Subject: [PATCH mm-unstable v7 22/31] m68k: Convert various functions to use ptdescs Date: Mon, 24 Jul 2023 21:20:42 -0700 Message-Id: <20230725042051.36691-23-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230725042051.36691-1-vishal.moola@gmail.com> References: <20230725042051.36691-1-vishal.moola@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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 | 47 ++++++++++++++-------------- arch/m68k/include/asm/sun3_pgalloc.h | 8 ++--- arch/m68k/mm/motorola.c | 4 +-- 3 files changed, 30 insertions(+), 29 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 #include -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) \ -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) {