From patchwork Mon May 1 19:28:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13228061 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 8F4F4C7EE2A for ; Mon, 1 May 2023 19:31:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233387AbjEATbV (ORCPT ); Mon, 1 May 2023 15:31:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233573AbjEAT3q (ORCPT ); Mon, 1 May 2023 15:29:46 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B91A72D67; Mon, 1 May 2023 12:29:20 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-1aaef97652fso11574115ad.0; Mon, 01 May 2023 12:29:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1682969352; x=1685561352; 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=kyicI3UFSJTH3R33HGjLFGEyUDrTPXlIkqJCgIfzdrc=; b=bIC3wiMrkZ043YRG29tisEfS2j+UeOAsmyII3EDzrldtjEb8icghvzgUTYdQYM4doj vdu0JKDKQcL03t0/j67MJsK3EMdVvlx3Lc/9NrJJJYh+5KdPrYzRKBiHtTGqpBRhkA5a ZboUsEenHMS9VrUn3gKI66CrCL9Z8GCruZLIMyl89zj2oR4Tg7uJGI/BsPQUk9uXq4w7 IEqVWzOt4YqC8i9AxlAbu1JP49n5XnekAOLER4FSWBBd0M0ka47bttpu+oGYYPDkowKQ ep35YwloCTCGYeII4Pobz7D0t4NcJCq50AMppyxrvfN/Wt0IBRqMUSxoDgh1JHSYp5Pm g50g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682969352; x=1685561352; 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=kyicI3UFSJTH3R33HGjLFGEyUDrTPXlIkqJCgIfzdrc=; b=F2U/+JY1qN/CDnxb1Rw57HirIarHPLj85x22Tqh+J5+8k3Ig+DMc1TyNvkzGM/Go+A cHQTP7rnbKRn7/tlDJ2nrpOJgr7i3SaGcjdNLYWeSoJ81atukVhT7Yob5TkWxW7c8MrE F3y8BSEQ/5r7mMa8m+mLq0NnmlpL0a2gojbWPVTDMTP5T000B/wNvODlqkksnFFKMNWo kSBiDAXiWj949mbk56bzIWyVVkiyB7QQntlvFNbSxOeqW3jfIOoMBDBYUSNwnAlb8OOZ 49CjzMIPVFy9lk0U5zeHwZrFnODFVpBfhq4Dgchi6uMnfY+W5IJb9Ps2G5l3IQgpDi5p lFiw== X-Gm-Message-State: AC+VfDy4Aqvf6tgGhz2UnAqs4QM3m7Yd0HfRlibkpEemo3D1NgCtCOD3 CjaW28nUYcQAmjjEIZy8k6rYaVqQ4fZRyRj4 X-Google-Smtp-Source: ACHHUZ6JGwiASceIv2N+eQzagLfWHlR6lj5LsM9PIBmbvfqlnJYs1oK6NLyKl7E/zGC8k10AZHOifw== X-Received: by 2002:a17:902:ea0b:b0:1a6:3b9c:7fea with SMTP id s11-20020a170902ea0b00b001a63b9c7feamr19311944plg.36.1682969351902; Mon, 01 May 2023 12:29:11 -0700 (PDT) Received: from fedora.hsd1.ca.comcast.net ([2601:644:937f:7f20::9a2c]) by smtp.googlemail.com with ESMTPSA id u8-20020a170902bf4800b0019c13d032d8sm18175622pls.253.2023.05.01.12.29.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 May 2023 12:29:11 -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, "Vishal Moola (Oracle)" , Thomas Bogendoerfer Subject: [PATCH v2 26/34] mips: Convert various functions to use ptdescs Date: Mon, 1 May 2023 12:28:21 -0700 Message-Id: <20230501192829.17086-27-vishal.moola@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230501192829.17086-1-vishal.moola@gmail.com> References: <20230501192829.17086-1-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 ptdesc_alloc() and ptdesc_address() instead to help standardize page tables further. Signed-off-by: Vishal Moola (Oracle) --- arch/mips/include/asm/pgalloc.h | 31 +++++++++++++++++-------------- arch/mips/mm/pgtable.c | 7 ++++--- 2 files changed, 21 insertions(+), 17 deletions(-) diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h index f72e737dda21..7f7cc3140b27 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); + ptdesc_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 { \ + ptdesc_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 = ptdesc_alloc(GFP_KERNEL_ACCOUNT, PMD_TABLE_ORDER); + if (!ptdesc) return NULL; - if (!pgtable_pmd_page_ctor(pg)) { - __free_pages(pg, PMD_TABLE_ORDER); + if (!ptdesc_pmd_ctor(ptdesc)) { + ptdesc_free(ptdesc); return NULL; } - pmd = (pmd_t *)page_address(pg); + pmd = (pmd_t *)ptdesc_address(ptdesc); pmd_init(pmd); return pmd; } @@ -90,10 +90,13 @@ 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 = ptdesc_alloc(GFP_KERNEL, PUD_TABLE_ORDER); - pud = (pud_t *) __get_free_pages(GFP_KERNEL, PUD_TABLE_ORDER); - if (pud) - pud_init(pud); + if (!ptdesc) + return NULL; + pud = (pud_t *)ptdesc_address(ptdesc); + + pud_init(pud); return pud; } diff --git a/arch/mips/mm/pgtable.c b/arch/mips/mm/pgtable.c index b13314be5d0e..d626db9ac224 100644 --- a/arch/mips/mm/pgtable.c +++ b/arch/mips/mm/pgtable.c @@ -10,10 +10,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) { - pgd_t *ret, *init; + pgd_t *init, *ret = NULL; + struct ptdesc *ptdesc = ptdesc_alloc(GFP_KERNEL, PGD_TABLE_ORDER); - ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_TABLE_ORDER); - 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,