From patchwork Mon Apr 17 20:50:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13214617 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 312EAC7EE24 for ; Mon, 17 Apr 2023 20:54:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231390AbjDQUyR (ORCPT ); Mon, 17 Apr 2023 16:54:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40216 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231215AbjDQUx3 (ORCPT ); Mon, 17 Apr 2023 16:53:29 -0400 Received: from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com [IPv6:2607:f8b0:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF4227A91; Mon, 17 Apr 2023 13:53:17 -0700 (PDT) Received: by mail-pl1-x62f.google.com with SMTP id p17so16171574pla.3; Mon, 17 Apr 2023 13:53:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681764797; x=1684356797; 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=Pf7K/iFMD6od7/SRYpuPsYcodkkXMgOdjXv5YJvZldk=; b=Bwk4ooUgupEoGCPug2H2Eo/HpnuuhxU7x81C/Qk6PZMSk1B54ZJ/T95wzfLs2bHmOL EoIfThp59UctKku6w1OEzm9Tx1+NGxZtvh5x5EZcL/GqxrGONyvWeZgGKJ7IB/ueJlyr 3shywEfhQgNVSuay+LMKRYZJ2fcroNukWPhJ2nbiEAP2p1v1zQae9MOASciSz7iDNPe8 PaaHFDAGtzWOJsB/jrA0V4yjZJzVFkj1D7lHE74htYvR1G0N63C9Bb92oSk5fpPTqJrg y20llT4kvkmAZ0rau94Yl1KLiffp2Awm3htmoO0PKOmikRHdd7NJITZhSry9QyqyhUwZ 8Oiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681764797; x=1684356797; 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=Pf7K/iFMD6od7/SRYpuPsYcodkkXMgOdjXv5YJvZldk=; b=fIM9vJXV4q2wA+fi1fhfk/WCr846AG6KQFVwVp0QJXJg8qN06tFZfql28Rbu6wkwwA iU4BFJTHNB0nh/Qhmshpmyz97NPPUUnaEyX4JoTnfB5stJ5zHd9Olu/5gENSXSPDL9G5 Vyc2V4Hth2ASsR5DFOuDgfSPzuH/FFsHDlNkgh5Dg9qH8hSqbXiId0QzPHUGNyxRbZ9H z4oGq5gqV1hmJ8FHqYXwCR78Uc5ktX9+vogIBs4KZdb6Rv9bi71EdVIu4KsJ6YvAL5Ye mAA7pUhVtl3VjR435INVoo7EwyJvEH69K3KBQ6qkPPrNFse/kuvxqCbOP4yw9IvMgHZw 4awA== X-Gm-Message-State: AAQBX9eLkSeIlBl7cB2SQlQWCbZNN2FTw2COS87M5HtS5b3q7BnA8/tT OCAO9iWhEXPBQ3sgwghU0Do= X-Google-Smtp-Source: AKy350YGLzUMfl8U7k4p6Sd9nO3FUwkbMa1TWeVYLUOOgANIZAClkJJEoJzR0+dt425gFfwmjH24tg== X-Received: by 2002:a17:90a:ab12:b0:246:8b47:3d5b with SMTP id m18-20020a17090aab1200b002468b473d5bmr16661185pjq.18.1681764797279; Mon, 17 Apr 2023 13:53:17 -0700 (PDT) Received: from fedora.hsd1.ca.comcast.net ([2601:644:937f:7f20::c139]) by smtp.googlemail.com with ESMTPSA id h7-20020a17090ac38700b0022335f1dae2sm7609707pjt.22.2023.04.17.13.53.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 13:53:17 -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 23/33] loongarch: Convert various functions to use ptdescs Date: Mon, 17 Apr 2023 13:50:38 -0700 Message-Id: <20230417205048.15870-24-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/loongarch/include/asm/pgalloc.h | 27 +++++++++++++++------------ arch/loongarch/mm/pgtable.c | 7 ++++--- 2 files changed, 19 insertions(+), 15 deletions(-) diff --git a/arch/loongarch/include/asm/pgalloc.h b/arch/loongarch/include/asm/pgalloc.h index af1d1e4a6965..1fe074f85b6b 100644 --- a/arch/loongarch/include/asm/pgalloc.h +++ b/arch/loongarch/include/asm/pgalloc.h @@ -45,9 +45,9 @@ extern void pagetable_init(void); extern pgd_t *pgd_alloc(struct mm_struct *mm); #define __pte_free_tlb(tlb, pte, address) \ -do { \ - pgtable_pte_page_dtor(pte); \ - tlb_remove_page((tlb), pte); \ +do { \ + ptdesc_pte_dtor(page_ptdesc(pte)); \ + tlb_remove_page_ptdesc((tlb), page_ptdesc(pte)); \ } while (0) #ifndef __PAGETABLE_PMD_FOLDED @@ -55,18 +55,18 @@ 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_page(GFP_KERNEL_ACCOUNT); - if (!pg) + ptdesc = ptdesc_alloc(GFP_KERNEL_ACCOUNT, 0); + if (!ptdesc) return NULL; - if (!pgtable_pmd_page_ctor(pg)) { - __free_page(pg); + 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; } @@ -80,10 +80,13 @@ 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, 0); - pud = (pud_t *) __get_free_page(GFP_KERNEL); - if (pud) - pud_init(pud); + if (!ptdesc) + return NULL; + pud = (pud_t *)ptdesc_address(ptdesc); + + pud_init(pud); return pud; } diff --git a/arch/loongarch/mm/pgtable.c b/arch/loongarch/mm/pgtable.c index 36a6dc0148ae..ff07b8f1ef30 100644 --- a/arch/loongarch/mm/pgtable.c +++ b/arch/loongarch/mm/pgtable.c @@ -11,10 +11,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm) { - pgd_t *ret, *init; + pgd_t *init, *ret = NULL; + struct ptdesc *ptdesc = ptdesc_alloc(GFP_KERNEL, 0); - ret = (pgd_t *) __get_free_page(GFP_KERNEL); - 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,