From patchwork Mon Apr 17 20:50:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13214715 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 82286C7EE20 for ; Mon, 17 Apr 2023 20:55:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231190AbjDQUz2 (ORCPT ); Mon, 17 Apr 2023 16:55:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231259AbjDQUxc (ORCPT ); Mon, 17 Apr 2023 16:53:32 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 946144C10; Mon, 17 Apr 2023 13:53:20 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id hg14-20020a17090b300e00b002471efa7a8fso14357551pjb.0; Mon, 17 Apr 2023 13:53:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681764800; x=1684356800; 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=DwA2KoT+Gkb+TSG9gl3xh2UjcEOrukpYDh0FxXwVNpDTsL49sodGBFe/MxZJLiffh8 Okfe4RTRfpJn4SFFKcweRaXMogMu3aLJXW8S0ijOu/y8rquyNOCuhOYqIlMfHtHNwFXl 0RIVF9f99J773/WS0WxWYyLGFniLvieyUAz5torJ7RwCjhPN4iKRxNqBQLtPHzo1HkHq UDiYLsTcdIpx6G4pcrHTW0RLQiAILxALX6WF9BC1qxq+9QtqiExh0N2abkWgWZYyYNmB dTtZwe83/hP4XI3Q8dsRpB6pTlzqUQszpTQqyb8BBRRnRiGvSruO77w1spjFd7OVj31k rIHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681764800; x=1684356800; 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=f6XEFEwvGArYZP3GGplMlAHhpKYi4cHAhy6Fgax41YX1bdWzMwjV6xvQrYdlNI/JAR N30qSXN+hxUzbgYWW027U7ZnpxEVx+AoCDRYVaRD5BgwkXwoKZ/FK0EmFJiVI0y34s8/ lMUFy3fXlf/bdxTT/OuESh3bkMNB/0t6K/J9vk6esHieMbBcSiUqdd6QmNl3bnFih9Qs hY/XwKrmriiosuMkdraG6Gi6XXbWyb53MRqD/XWPmRHpE0Dz/5uP/0Y+MwttTfwOay/n 4M/lh0rNdpHWlaF3z6XEbTKDaqEIThV8OVle/v93iIlswpMWRWU+acBMgUmJjUSfhHDj 8DrQ== X-Gm-Message-State: AAQBX9eZGKmFrQpH0EopmCi4PtQhSCnSf1a9ypiJL3W4qCb9LYZTCJiX E15veHMK9As65hD/yfoMbGo= X-Google-Smtp-Source: AKy350b8thcmecOoaOKiNwMZgeAazmiEiQ9V6nLrivAsLyOgVvPy05KEMe/JXWQl3cGgcJMZ1iU0KA== X-Received: by 2002:a17:90b:3848:b0:247:4ad1:f69b with SMTP id nl8-20020a17090b384800b002474ad1f69bmr11748993pjb.26.1681764800112; Mon, 17 Apr 2023 13:53:20 -0700 (PDT) Received: from fedora.hsd1.ca.comcast.net ([2601:644:937f:7f20::c139]) by smtp.googlemail.com with ESMTPSA id h7-20020a17090ac38700b0022335f1dae2sm7609707pjt.22.2023.04.17.13.53.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 13:53:19 -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)" Subject: [PATCH 25/33] mips: Convert various functions to use ptdescs Date: Mon, 17 Apr 2023 13:50:40 -0700 Message-Id: <20230417205048.15870-26-vishal.moola@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230417205048.15870-1-vishal.moola@gmail.com> References: <20230417205048.15870-1-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,