From patchwork Tue Jun 27 03:14:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13293890 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 92696C001B3 for ; Tue, 27 Jun 2023 03:20:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231740AbjF0DUm (ORCPT ); Mon, 26 Jun 2023 23:20:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36768 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231315AbjF0DSh (ORCPT ); Mon, 26 Jun 2023 23:18:37 -0400 Received: from mail-yw1-x112f.google.com (mail-yw1-x112f.google.com [IPv6:2607:f8b0:4864:20::112f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E36AD2D64; Mon, 26 Jun 2023 20:16:05 -0700 (PDT) Received: by mail-yw1-x112f.google.com with SMTP id 00721157ae682-57028539aadso44557767b3.2; Mon, 26 Jun 2023 20:16:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1687835761; x=1690427761; 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=Z2eVDlXL8alglJUGVXcc8JA7ix0brgT+4DYqdXjkOuM=; b=Rm5e85CxLSywqFxegbM92lF42neHfR0fR+lQK4IGVo6rv84p4nUjka/pX4hUXrlpwO WD89hdl3l7+Q82fCWDirVtfl1UdPVGFAIR8Pji+LBlOshyqJG18LS5xzOpOCQe2DamDu jKvOLad62fOFII4Rcx9NR2LrprdDjwL6rx6EBRmhcfI68ty/WxtUVuYaOl3yyA6VAcm8 kllPQdGN+P459ax9lvyxifjF3Qc52jw7EuJ0L5rjpr2rzqsA5k+0IGd/73X59eOaGEjw K+/CutY1Ags92Fdl/Y8Zq5PhNziANc4vxThpN5vTFQCoz8gt8gqyoqM1KvT2g/UvZYfQ zR+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687835761; x=1690427761; 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=Z2eVDlXL8alglJUGVXcc8JA7ix0brgT+4DYqdXjkOuM=; b=XeMb7es0dNd0SG6P+JEFDJDa6b+dXe3oGiaNtHIWVFle+b2548b27fQLZng9YjPiR+ GZMiZdGfa6PMjgcqHd0v4PgHof1OoRNO517ZDcbVH5I+MbzNKNG6GxDkIo+vBhjp3Bp5 98eYS+2g0RR9F4PieUN472VQCM2UO2SNdIrdTLBVJe7JGiN7dsffUjrv2O8148UBYK+y 7jYpimlKsoRQgXSUIKDSTziK7wrb7RPmH6z8uKNF35H7ulVmYzOwLqKf/3c9OOyvxpve twyU9DcKl33P/FcSrP5DNblFL8Pvf6uo2RCMUXpkceDiVkuv7ETwetqHZ78TyaPFOhpI vVHw== X-Gm-Message-State: AC+VfDwPxOkrxDK7c7fLBGLd9LNJCZdWN53FHQngH1cxusnxDRC2ozAJ I6LE57Ix4oPvGMmJC9kZ5zs= X-Google-Smtp-Source: ACHHUZ7ohgVca4eugfFM/saLKJ40V7MYdUNGfKx6MOO12TR+JS8tS/aqfK1zXJTwp/W9GOKug+ymcA== X-Received: by 2002:a0d:d8c2:0:b0:565:8c16:a0e1 with SMTP id a185-20020a0dd8c2000000b005658c16a0e1mr39842823ywe.13.1687835760682; Mon, 26 Jun 2023 20:16:00 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id s4-20020a0dd004000000b0057399b3bd26sm1614798ywd.33.2023.06.26.20.15.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jun 2023 20:16:00 -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)" , Thomas Bogendoerfer , Mike Rapoport Subject: [PATCH v6 25/33] mips: Convert various functions to use ptdescs Date: Mon, 26 Jun 2023 20:14:23 -0700 Message-Id: <20230627031431.29653-26-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230627031431.29653-1-vishal.moola@gmail.com> References: <20230627031431.29653-1-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) --- arch/mips/include/asm/pgalloc.h | 32 ++++++++++++++++++-------------- arch/mips/mm/pgtable.c | 8 +++++--- 2 files changed, 23 insertions(+), 17 deletions(-) diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h index f72e737dda21..40e40a7eb94a 100644 --- a/arch/mips/include/asm/pgalloc.h +++ b/arch/mips/include/asm/pgalloc.h @@ -51,13 +51,13 @@ extern pgd_t *pgd_alloc(struct mm_struct *mm); static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd) { - free_pages((unsigned long)pgd, PGD_TABLE_ORDER); + pagetable_free(virt_to_ptdesc(pgd)); } -#define __pte_free_tlb(tlb,pte,address) \ -do { \ - pgtable_pte_page_dtor(pte); \ - tlb_remove_page((tlb), pte); \ +#define __pte_free_tlb(tlb, pte, address) \ +do { \ + pagetable_pte_dtor(page_ptdesc(pte)); \ + tlb_remove_page_ptdesc((tlb), page_ptdesc(pte)); \ } while (0) #ifndef __PAGETABLE_PMD_FOLDED @@ -65,18 +65,18 @@ do { \ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address) { pmd_t *pmd; - struct page *pg; + struct ptdesc *ptdesc; - pg = alloc_pages(GFP_KERNEL_ACCOUNT, PMD_TABLE_ORDER); - if (!pg) + ptdesc = pagetable_alloc(GFP_KERNEL_ACCOUNT, PMD_TABLE_ORDER); + if (!ptdesc) return NULL; - if (!pgtable_pmd_page_ctor(pg)) { - __free_pages(pg, PMD_TABLE_ORDER); + if (!pagetable_pmd_ctor(ptdesc)) { + pagetable_free(ptdesc); return NULL; } - pmd = (pmd_t *)page_address(pg); + pmd = ptdesc_address(ptdesc); pmd_init(pmd); return pmd; } @@ -90,10 +90,14 @@ 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 & ~__GFP_HIGHMEM, + PUD_TABLE_ORDER); - pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_TABLE_ORDER); - if (pud) - pud_init(pud); + if (!ptdesc) + return NULL; + pud = ptdesc_address(ptdesc); + + pud_init(pud); return pud; } diff --git a/arch/mips/mm/pgtable.c b/arch/mips/mm/pgtable.c index b13314be5d0e..1506e458040d 100644 --- a/arch/mips/mm/pgtable.c +++ b/arch/mips/mm/pgtable.c @@ -10,10 +10,12 @@ pgd_t *pgd_alloc(struct mm_struct *mm) { - pgd_t *ret, *init; + pgd_t *init, *ret = NULL; + struct ptdesc *ptdesc = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM, + PGD_TABLE_ORDER); - ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_TABLE_ORDER); - if (ret) { + if (ptdesc) { + ret = ptdesc_address(ptdesc); init = pgd_offset(&init_mm, 0UL); pgd_init(ret); memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,