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 X-Spam-Level: X-Spam-Status: No, score=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2A42CC433ED for ; Wed, 12 May 2021 12:10:43 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 85B1061403 for ; Wed, 12 May 2021 12:10:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 85B1061403 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D65536B0036; Wed, 12 May 2021 08:10:41 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CEDB66B006E; Wed, 12 May 2021 08:10:41 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B676C6B0070; Wed, 12 May 2021 08:10:41 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0108.hostedemail.com [216.40.44.108]) by kanga.kvack.org (Postfix) with ESMTP id 96CDA6B0036 for ; Wed, 12 May 2021 08:10:41 -0400 (EDT) Received: from smtpin36.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 5FD99180ACEF7 for ; Wed, 12 May 2021 12:10:41 +0000 (UTC) X-FDA: 78132462282.36.B16D0B1 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf11.hostedemail.com (Postfix) with ESMTP id C90F02000262 for ; Wed, 12 May 2021 12:10:21 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 4A21E613FC; Wed, 12 May 2021 12:10:38 +0000 (UTC) Date: Wed, 12 May 2021 13:10:35 +0100 From: Catalin Marinas To: Peter Collingbourne Cc: Andrey Konovalov , Alexander Potapenko , Vincenzo Frascino , Andrew Morton , Evgenii Stepanov , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 1/3] kasan: use separate (un)poison implementation for integrated init Message-ID: <20210512121035.GD14638@arm.com> References: <441e1c22990205618e1bbff216e0bb83e3b13bae.1620777151.git.pcc@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <441e1c22990205618e1bbff216e0bb83e3b13bae.1620777151.git.pcc@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: C90F02000262 Authentication-Results: imf11.hostedemail.com; dkim=none; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=arm.com (policy=none); spf=pass (imf11.hostedemail.com: domain of cmarinas@kernel.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=cmarinas@kernel.org X-Rspamd-Server: rspam04 X-Stat-Signature: cbp11gcemp1iz1fws7kxj4xzkqbabh75 Received-SPF: none (kernel.org>: No applicable sender policy available) receiver=imf11; identity=mailfrom; envelope-from=""; helo=mail.kernel.org; client-ip=198.145.29.99 X-HE-DKIM-Result: none/none X-HE-Tag: 1620821421-948631 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 Tue, May 11, 2021 at 04:54:24PM -0700, Peter Collingbourne wrote: > diff --git a/include/linux/kasan.h b/include/linux/kasan.h > index b1678a61e6a7..e35fa301d3db 100644 > --- a/include/linux/kasan.h > +++ b/include/linux/kasan.h [...] > @@ -113,8 +113,30 @@ static inline bool kasan_has_integrated_init(void) > return false; > } > > +static __always_inline void kasan_alloc_pages(struct page *page, > + unsigned int order, gfp_t flags) > +{ > + /* Only available for integrated init. */ > + BUG(); > +} > + > +static __always_inline void kasan_free_pages(struct page *page, > + unsigned int order) > +{ > + /* Only available for integrated init. */ > + BUG(); > +} Would these two work as BUILD_BUG()? -- Catalin