From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5907C433EF for ; Tue, 21 Dec 2021 12:30:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 68ACB6B0074; Tue, 21 Dec 2021 07:30:33 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 639766B0075; Tue, 21 Dec 2021 07:30:33 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5021F6B0078; Tue, 21 Dec 2021 07:30:33 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0200.hostedemail.com [216.40.44.200]) by kanga.kvack.org (Postfix) with ESMTP id 3DBDD6B0074 for ; Tue, 21 Dec 2021 07:30:33 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id E16978249980 for ; Tue, 21 Dec 2021 12:30:32 +0000 (UTC) X-FDA: 78941734704.17.A7F4B6E Received: from mail-wm1-f47.google.com (mail-wm1-f47.google.com [209.85.128.47]) by imf05.hostedemail.com (Postfix) with ESMTP id 6F350100052 for ; Tue, 21 Dec 2021 12:30:32 +0000 (UTC) Received: by mail-wm1-f47.google.com with SMTP id g191-20020a1c9dc8000000b0032fbf912885so1969574wme.4 for ; Tue, 21 Dec 2021 04:30:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=FnZQfonqJQZhort/TdYz7jT5v9CBQGfdqTN7b6WIV6M=; b=DIaobCcoV4E5Rq6yzTz5ISUWIz/FEL4XI+oHyCCeJVSuC/sJqfxlh8U+w47glc2s/J BIpKUry8IN2/fseKXWKzyJXVoH41t7gjmDrB42mHOD9JjDctX7NUiK4Xg+96TgP+Pk/3 jTNDqKsmOX2X48qF+SjvJa1McgAIIh2xhL4kvVl0Y/4eKsqgJG7Z5FvL+guCMUqj3O9Z l/a0LeHT26rnurlUNUf2oXAH5V/qFahax5bXstsyIPaYCbrAaxTkpH7Lkdffxrzs9tGA SqxSwaCp5DD6b5iaGZT4PCs0KSRD7MZ7UrbS0o3+mo0g9d7mrVgYg8PscLtLpY0ZgWdi scXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=FnZQfonqJQZhort/TdYz7jT5v9CBQGfdqTN7b6WIV6M=; b=hrbAeO+A04IJm4VktJAtZpg+caUgcIPzZSZqlXs+USgXSrKN6weTPntqiYDqzkyuRV +XOFqssuvdAnoZy/wKCSek6nMiYsgZmfwKLXXh7UL0T5iAQgNkIAqcFJ38JAzTMVqpPV OAHFemLAiHnY+Ar6aLxk2qLw4+EpSt4lg3448zwmF4ZB8VEjqNpoD7mI2O7B+jdRp+QB 63vg7A2pRNkUrQpB+tqsLKwnKpkDEjIT/xaqdvtXWY8CBe7+lCUvKMVob/roD4sYNG5F 7DR+G00MCfZtDj3d2iTkpvqTZuVHU4nkFsikZNwsJ82iYKIfYKjEzlcVRhojo37UmqK8 T0LQ== X-Gm-Message-State: AOAM532A6+7oo3orZGDr/buK9vozQR57Fk2LMRCH2kzdAc90k/pCCrIj THLlRUcD0gdmmn0MiqGeWVgLqA== X-Google-Smtp-Source: ABdhPJwlh4LBUDdueqH7tct/Z5sKTz90jWmM1dJy9ZBdB9HKd6S4SPiU5V4Is72wN8XRRHJz8/MQFw== X-Received: by 2002:a05:600c:24e:: with SMTP id 14mr2494370wmj.67.1640089831086; Tue, 21 Dec 2021 04:30:31 -0800 (PST) Received: from elver.google.com ([2a00:79e0:15:13:87ff:799:2072:8808]) by smtp.gmail.com with ESMTPSA id 14sm584579wry.23.2021.12.21.04.30.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Dec 2021 04:30:30 -0800 (PST) Date: Tue, 21 Dec 2021 13:30:23 +0100 From: Marco Elver To: andrey.konovalov@linux.dev Cc: Alexander Potapenko , Andrew Morton , Andrey Konovalov , Dmitry Vyukov , Andrey Ryabinin , kasan-dev@googlegroups.com, linux-mm@kvack.org, Vincenzo Frascino , Catalin Marinas , Will Deacon , Mark Rutland , linux-arm-kernel@lists.infradead.org, Peter Collingbourne , Evgenii Stepanov , linux-kernel@vger.kernel.org, Andrey Konovalov Subject: Re: [PATCH mm v4 29/39] kasan, page_alloc: allow skipping memory init for HW_TAGS Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.0.5 (2021-01-21) X-Rspamd-Queue-Id: 6F350100052 X-Stat-Signature: xm1tstt7kohiz3swpz5whbbs6n8zre1f Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=DIaobCco; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf05.hostedemail.com: domain of elver@google.com designates 209.85.128.47 as permitted sender) smtp.mailfrom=elver@google.com X-Rspamd-Server: rspam02 X-HE-Tag: 1640089832-657210 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Dec 20, 2021 at 11:02PM +0100, andrey.konovalov@linux.dev wrote: [...] > /* Room for N __GFP_FOO bits */ > #define __GFP_BITS_SHIFT (24 + \ > + IS_ENABLED(CONFIG_KASAN_HW_TAGS) + \ > IS_ENABLED(CONFIG_KASAN_HW_TAGS) + \ > IS_ENABLED(CONFIG_KASAN_HW_TAGS) + \ > IS_ENABLED(CONFIG_LOCKDEP)) Does '3 * IS_ENABLED(CONFIG_KASAN_HW_TAGS)' work?