From patchwork Mon Aug 7 23:05:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vishal Moola X-Patchwork-Id: 13345469 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 DFD5FC001DE for ; Mon, 7 Aug 2023 23:08:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229812AbjHGXIc (ORCPT ); Mon, 7 Aug 2023 19:08:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46218 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231224AbjHGXHL (ORCPT ); Mon, 7 Aug 2023 19:07:11 -0400 Received: from mail-yb1-xb2c.google.com (mail-yb1-xb2c.google.com [IPv6:2607:f8b0:4864:20::b2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76DC51FFA; Mon, 7 Aug 2023 16:06:18 -0700 (PDT) Received: by mail-yb1-xb2c.google.com with SMTP id 3f1490d57ef6-d59da7115bdso263865276.3; Mon, 07 Aug 2023 16:06:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1691449561; x=1692054361; 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=VD2saKmHCgP979K/4Ur2DZD5lv+pCsAy+26MDZ4lRXE=; b=KaA5Xf0Zq7VankK3QOvVnhKCvDQA0idGZ5r/QtBaYpBUZhM7IUDDnipX0Mck9NuTr6 FMzfUiWHWV61utAYtiNJjvsmZyQrjEGqV1vWWuYtjGooZk9wKA6pHj8JXiEh77Vd66gm gq9wCdtohtsBXI+QiM0g5DM3RYb5yVm35tcAKNI7nQZaFVODWjyuyXisRnjCevekbcDp QweW3qBvEiOtjGdP8+KO+Ai79xaww40f8oFcpzIoZ31G0t7vkt4E3RfT7Asw6Y6mNUmW 4v5tgaFeOHT3yezqwQ6Pv7HkjczS8wtW/o3vWALkNkC7/L83lM6ERIvU0onlnalg95pZ XQOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691449561; x=1692054361; 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=VD2saKmHCgP979K/4Ur2DZD5lv+pCsAy+26MDZ4lRXE=; b=iqL73rg6HEQ7wzQuWmHEzq7mD/TFI1cDK5G9kT+jw+AgRuh1e67mT1Jk4tHnYJn7VE kwN0LBT1I+Pj6gWNLJ/Ig7uZXP8B/MSyPeZZVnYvdNIJMaTRZAluHoTWThyf2bjTV0OG rLT6J7KhLKaUIwkr8XPnuFi4AZFvtnVdegJD9b9R9UBUM0m4OozKnq+Cg7ojpnGDeShT LUlS4SBs4XrypuvqqE2ksHrf4R/jWsfC/yVLR3MXCrNmz/FHS9IARzAXvdAa5siABS5B SuYInCsMEqps4TjF+E8SvOuFnHGQIuNTHfsKeFRDFDg4w1STCaxmqDtAgCW1FwxBaOUG lWQg== X-Gm-Message-State: AOJu0YwR83E3tfhVKYhADgbfD2fm6PJ4kfh6UjiCdDA4QLBTEI2wI/L7 0cASAS+DleMTk5DsX/Rrc7E= X-Google-Smtp-Source: AGHT+IGT7jcZ858GNZbGv2ymKyHkNCq6k2xr+zx9+OdmxVuwoAhnOKduGJp0I6ObmWSEyVKiLNM8sw== X-Received: by 2002:a25:8210:0:b0:d39:fa2f:8b63 with SMTP id q16-20020a258210000000b00d39fa2f8b63mr13670853ybk.25.1691449561057; Mon, 07 Aug 2023 16:06:01 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id d190-20020a25cdc7000000b00d3596aca5bcsm2545203ybf.34.2023.08.07.16.05.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 16:06:00 -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)" , Huacai Chen , Mike Rapoport Subject: [PATCH mm-unstable v9 21/31] loongarch: Convert various functions to use ptdescs Date: Mon, 7 Aug 2023 16:05:03 -0700 Message-Id: <20230807230513.102486-22-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230807230513.102486-1-vishal.moola@gmail.com> References: <20230807230513.102486-1-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. Acked-by: Mike Rapoport (IBM) 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..23f5b1107246 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 { \ + pagetable_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 = pagetable_alloc(GFP_KERNEL_ACCOUNT, 0); + if (!ptdesc) return NULL; - if (!pgtable_pmd_page_ctor(pg)) { - __free_page(pg); + 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; } @@ -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 = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM, 0); - pud = (pud_t *) __get_free_page(GFP_KERNEL); - if (pud) - pud_init(pud); + if (!ptdesc) + return NULL; + pud = ptdesc_address(ptdesc); + + pud_init(pud); return pud; } diff --git a/arch/loongarch/mm/pgtable.c b/arch/loongarch/mm/pgtable.c index 1260cf30e3ee..b14343e211b6 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 = pagetable_alloc(GFP_KERNEL & ~__GFP_HIGHMEM, 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,