From patchwork Wed May 31 21:30:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13262651 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 D5ABDC7EE33 for ; Wed, 31 May 2023 21:34:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231233AbjEaVeY (ORCPT ); Wed, 31 May 2023 17:34:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230380AbjEaVdm (ORCPT ); Wed, 31 May 2023 17:33:42 -0400 Received: from mail-yw1-x112b.google.com (mail-yw1-x112b.google.com [IPv6:2607:f8b0:4864:20::112b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5CD0F1B9; Wed, 31 May 2023 14:32:34 -0700 (PDT) Received: by mail-yw1-x112b.google.com with SMTP id 00721157ae682-565a022ef06so766687b3.3; Wed, 31 May 2023 14:32:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685568721; x=1688160721; 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=BVDfvhMIj7WJxaEIn3M83QWohhaKgCSnIk9ScAfRPU4=; b=sZVMueiD/ZRZMwtJ1uBmpVp21br88K7Ts0BJnaG9K42MiUpWTkvlqtGrjbXbMcnnig ltism/PzSzsT+R/to8b3yQRLDRn38PbBDdqNHRciyJGDmOy9mh7D1lXAJvcHy0PMN5jp su04PaNazxgOqRipoXzoczHkJmES+frsRN0f23ykUUyQqSuCIK+AAi0RHbkHHQVi5qyL 3FwLmSeStb28bpTQ1/hpnTMSIeCoZ802rEkgE91uQZODe47s5OoFtBuE2chhEZiF5V8U obYLBCRSZ+tlt5wA8er/wOg+Jr+QyZpX7NHf8eGMHCX/qwho850Ox9fTY+JInMAzI852 Fi7Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685568721; x=1688160721; 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=BVDfvhMIj7WJxaEIn3M83QWohhaKgCSnIk9ScAfRPU4=; b=C03/u9MFDjZEbSOVBjQ/aB0rh2myva2DkqQ3NnlStS+MAvXlFWgink2wFsybbNu10w F8teOCr+Kh99hhhbeN8vOTSRrQdM12giq94G6BLwaBbfj2by2c8itViKwx1Kmi3JucN3 MnNsxE+sP062+iQdXtO3lgFxoK1r9Ik2ftIke+oCOS8Ux5ghVyL1uNA9EVYZFg7vCH86 sjMjjuYgBWblNcdQIKw5M8pRlZV7CfLDSuv1LcGTk4jvdEInRM2A/4mQ8Q/KPtURCfc0 E7imodnN+zWub1+nMaHSxdqfvPtVjM1locv98jBNnXhpzYe36uTlHUxDbT5krpAvlhon ivTg== X-Gm-Message-State: AC+VfDzXChw1SL7qdVZIlfIadLRVp1/U9tEDFen/bMwwRJ9MasnlefwY 3cQad2FfxjuqVUSJAzZJlag= X-Google-Smtp-Source: ACHHUZ5JiP1u+Csf8JFW+4lOHEoJa4kJJO4bSkCJf3taGF1GbHqDT+hHsEbp8gGuVkWnLydQNajjtA== X-Received: by 2002:a0d:cc47:0:b0:568:e7e6:4199 with SMTP id o68-20020a0dcc47000000b00568e7e64199mr4171591ywd.6.1685568720746; Wed, 31 May 2023 14:32:00 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::46]) by smtp.googlemail.com with ESMTPSA id t63-20020a0dd142000000b0055aafcef659sm658905ywd.5.2023.05.31.14.31.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 14:32:00 -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, "Vishal Moola (Oracle)" , Thomas Bogendoerfer Subject: [PATCH v3 26/34] mips: Convert various functions to use ptdescs Date: Wed, 31 May 2023 14:30:24 -0700 Message-Id: <20230531213032.25338-27-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230531213032.25338-1-vishal.moola@gmail.com> References: <20230531213032.25338-1-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) --- 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..3ba1fdb06502 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 = (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 = pagetable_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..6be3493d7722 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 = pagetable_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,