From patchwork Fri Jun 16 08:50:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Rapoport X-Patchwork-Id: 108937 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:994d:0:b0:3d9:f83d:47d9 with SMTP id k13csp1181886vqr; Fri, 16 Jun 2023 01:55:33 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7zCs4nVOhdjS9P/07+qZmDtvrs8ymvrIdyjzcpIxudCDgnwAq15H75qGmgGLc6g/GKFm0o X-Received: by 2002:a05:6359:6791:b0:12f:1dbc:5c3e with SMTP id sq17-20020a056359679100b0012f1dbc5c3emr599699rwb.5.1686905732840; Fri, 16 Jun 2023 01:55:32 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1686905732; cv=none; d=google.com; s=arc-20160816; b=DQLSaTnZY4g9GG8ji8xsywAyjBUQvYv23MhxxIKFAZuhCjRutjv7SjUbE/44MeGn1O 3fIMtsww6rYxx9Qf8iMVmI55LzzxaesH+XMgOTc/e/fybJsSexvw2muCyYENXPFDhEjG Qas4G8EUxDTP9Jc9HMHccNswc1mNSJSqupTB9T/zZA96Qig1LK52wMDCNmUu2Wx7463d coNh/692qD354UAnB0i7BVczakSTtXH86TnyJriRL+21unBPngtzGGqQ7NtorIXJkuIu g9zrUWmTjSkvgS+PbIZ9OqyL8kJXuqmNdrMKeq1A4FQ+qcyjtAzKXGAc4C0WbNx9ad2b 0WMg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=1+X/wLrqa0k/PTb6X1vDO2TMZO595dDD2xmuNqovnIU=; b=azfqVrIydLYyrYcN+ZBJW031PtcJCeiGVy4YAEfwWGQqQMEHSyJNc+jmqByrd90IdB WhlDAZT+6LFlzTWna0WJaVbWGWTm770GLQG3l+1VGnqU0KBMwH0XXEo/dJKc3ynG6PnN pUVLF14FgFLqZ3wEcUKk8J5vG7ALYWpZS/b7zKfAkq8K3g0d44urb6dS9sIVHI1WU/mV Ez/qW4r3TkPt9fQD4wKWgfgXkAwLHGywyvh0qamIQCiTO2NXXdx5Qnb94mnks9sn3dKD 6FqYF/QkipKQ5aX8jnPxmcglOXNV/MMQ3Oe5/NJTUsxzUb/aX+/5i5JteMUhVOnabjr/ NQDg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=YZTtvWhb; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id j69-20020a638048000000b0054fd0012d2fsi5588960pgd.42.2023.06.16.01.55.18; Fri, 16 Jun 2023 01:55:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=YZTtvWhb; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344018AbjFPIwc (ORCPT + 99 others); Fri, 16 Jun 2023 04:52:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343865AbjFPIwF (ORCPT ); Fri, 16 Jun 2023 04:52:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 058E62D77; Fri, 16 Jun 2023 01:51:49 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id BCB69627FC; Fri, 16 Jun 2023 08:51:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B963C433C9; Fri, 16 Jun 2023 08:51:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686905508; bh=+07oFke3TwadZ0sZEEllL+tiiID3wwgy+CrUkcKlMys=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YZTtvWhbmreCzC2jgCquzt+akv8T+7MJ+bE0l+X2tLA+SnHISSyAy2Tvsr5WGGhE9 PuxrPjU24hrqUElx9XIEe9OyVQwg8nfQOaWtcLSYFmDhH2hsz+RrgGpGDBvno1MJtS 2dr6uCCG1OnS/I52oIBnBqiFHwI2oUJTpHL6w/UriQdmHLxKHJQLhBNcM3/brxCTUA ACvH3XIoNfEusFqphqtAr2BDJawpGKGEbVMGV6vtFFym/zFgSP2FCRRnNSuK6n3h8a Eg2cl4gg22X2neXvj/JGEpds4aDGlaDuDSPceA7hFbFtWVJrgB3b1RFzCh5PamK893 93VQ7ENRp/0cg== From: Mike Rapoport To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Catalin Marinas , Christophe Leroy , "David S. Miller" , Dinh Nguyen , Heiko Carstens , Helge Deller , Huacai Chen , Kent Overstreet , Luis Chamberlain , Mark Rutland , Michael Ellerman , Mike Rapoport , Nadav Amit , "Naveen N. Rao" , Palmer Dabbelt , Puranjay Mohan , Rick Edgecombe , Russell King , Song Liu , Steven Rostedt , Thomas Bogendoerfer , Thomas Gleixner , Will Deacon , bpf@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-parisc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: [PATCH v2 05/12] modules, execmem: drop module_alloc Date: Fri, 16 Jun 2023 11:50:31 +0300 Message-Id: <20230616085038.4121892-6-rppt@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20230616085038.4121892-1-rppt@kernel.org> References: <20230616085038.4121892-1-rppt@kernel.org> MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768848865628736337?= X-GMAIL-MSGID: =?utf-8?q?1768848865628736337?= From: "Mike Rapoport (IBM)" Define default parameters for address range for code allocations using the current values in module_alloc() and make execmem_text_alloc() use these defaults when an architecure does not supply its specific parameters. With this, execmem_text_alloc() implements memory allocation in a way compatible with module_alloc() and can be used as a replacement for module_alloc(). Signed-off-by: Mike Rapoport (IBM) Acked-by: Song Liu --- include/linux/execmem.h | 8 ++++++++ include/linux/moduleloader.h | 12 ------------ kernel/module/main.c | 7 ------- mm/execmem.c | 12 ++++++++---- 4 files changed, 16 insertions(+), 23 deletions(-) diff --git a/include/linux/execmem.h b/include/linux/execmem.h index 68b2bfc79993..b9a97fcdf3c5 100644 --- a/include/linux/execmem.h +++ b/include/linux/execmem.h @@ -4,6 +4,14 @@ #include +#if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \ + !defined(CONFIG_KASAN_VMALLOC) +#include +#define MODULE_ALIGN (PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT) +#else +#define MODULE_ALIGN PAGE_SIZE +#endif + /** * struct execmem_range - definition of a memory range suitable for code and * related data allocations diff --git a/include/linux/moduleloader.h b/include/linux/moduleloader.h index b3374342f7af..4321682fe849 100644 --- a/include/linux/moduleloader.h +++ b/include/linux/moduleloader.h @@ -25,10 +25,6 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, /* Additional bytes needed by arch in front of individual sections */ unsigned int arch_mod_section_prepend(struct module *mod, unsigned int section); -/* Allocator used for allocating struct module, core sections and init - sections. Returns NULL on failure. */ -void *module_alloc(unsigned long size); - /* Determines if the section name is an init section (that is only used during * module loading). */ @@ -113,12 +109,4 @@ void module_arch_cleanup(struct module *mod); /* Any cleanup before freeing mod->module_init */ void module_arch_freeing_init(struct module *mod); -#if (defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)) && \ - !defined(CONFIG_KASAN_VMALLOC) -#include -#define MODULE_ALIGN (PAGE_SIZE << KASAN_SHADOW_SCALE_SHIFT) -#else -#define MODULE_ALIGN PAGE_SIZE -#endif - #endif diff --git a/kernel/module/main.c b/kernel/module/main.c index 43810a3bdb81..b445c5ad863a 100644 --- a/kernel/module/main.c +++ b/kernel/module/main.c @@ -1600,13 +1600,6 @@ static void free_modinfo(struct module *mod) } } -void * __weak module_alloc(unsigned long size) -{ - return __vmalloc_node_range(size, 1, VMALLOC_START, VMALLOC_END, - GFP_KERNEL, PAGE_KERNEL_EXEC, VM_FLUSH_RESET_PERMS, - NUMA_NO_NODE, __builtin_return_address(0)); -} - bool __weak module_init_section(const char *name) { return strstarts(name, ".init"); diff --git a/mm/execmem.c b/mm/execmem.c index 2fe36dcc7bdf..a67acd75ffef 100644 --- a/mm/execmem.c +++ b/mm/execmem.c @@ -59,9 +59,6 @@ void *execmem_text_alloc(size_t size) unsigned long fallback_end = execmem_params.modules.text.fallback_end; bool kasan = execmem_params.modules.flags & EXECMEM_KASAN_SHADOW; - if (!execmem_params.modules.text.start) - return module_alloc(size); - return execmem_alloc(size, start, end, align, pgprot, fallback_start, fallback_end, kasan); } @@ -108,8 +105,15 @@ void __init execmem_init(void) { struct execmem_params *p = execmem_arch_params(); - if (!p) + if (!p) { + p = &execmem_params; + p->modules.text.start = VMALLOC_START; + p->modules.text.end = VMALLOC_END; + p->modules.text.pgprot = PAGE_KERNEL_EXEC; + p->modules.text.alignment = 1; + return; + } if (!execmem_validate_params(p)) return;