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 411BCC433EF for ; Tue, 30 Nov 2021 22:07:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344480AbhK3WKW (ORCPT ); Tue, 30 Nov 2021 17:10:22 -0500 Received: from out1.migadu.com ([91.121.223.63]:57889 "EHLO out1.migadu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344427AbhK3WKS (ORCPT ); Tue, 30 Nov 2021 17:10:18 -0500 X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1638310017; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qxn2Xep6jUSip5qM4WVsL2tCgAIiNA6s93LyLl9ypbE=; b=hv7+PXgzoCzVGKdOPkvt7g4iTK52EYgjPAZOUx+c1O+WrQeXAFAOTNhFK3ZhIDhR/PWo8V HLVNrye0WRaiybeXAC8X1rrv4aBhV0AmRa7ws/CoXP6afp0PlxGtpuJN5hV7igDSQeyTUY 1RLj8uaxV4P3qEEhb5vXxd+iKffqNnU= From: andrey.konovalov@linux.dev To: Marco Elver , Alexander Potapenko , Vincenzo Frascino , Catalin Marinas , Peter Collingbourne Cc: Andrey Konovalov , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, Andrew Morton , linux-mm@kvack.org, Will Deacon , linux-arm-kernel@lists.infradead.org, Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: [PATCH 17/31] kasan, vmalloc: drop outdated VM_KASAN comment Date: Tue, 30 Nov 2021 23:06:56 +0100 Message-Id: In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrey Konovalov The comment about VM_KASAN in include/linux/vmalloc.c is outdated. VM_KASAN is currently only used to mark vm_areas allocated for kernel modules when CONFIG_KASAN_VMALLOC is disabled. Drop the comment. Signed-off-by: Andrey Konovalov --- include/linux/vmalloc.h | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 6e022cc712e6..b22369f540eb 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -28,17 +28,6 @@ struct notifier_block; /* in notifier.h */ #define VM_MAP_PUT_PAGES 0x00000200 /* put pages and free array in vfree */ #define VM_NO_HUGE_VMAP 0x00000400 /* force PAGE_SIZE pte mapping */ -/* - * VM_KASAN is used slightly differently depending on CONFIG_KASAN_VMALLOC. - * - * If IS_ENABLED(CONFIG_KASAN_VMALLOC), VM_KASAN is set on a vm_struct after - * shadow memory has been mapped. It's used to handle allocation errors so that - * we don't try to poison shadow on free if it was never allocated. - * - * Otherwise, VM_KASAN is set for kasan_module_alloc() allocations and used to - * determine which allocations need the module shadow freed. - */ - /* bits [20..32] reserved for arch specific ioremap internals */ /* -- 2.25.1