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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0D977C4829E for ; Thu, 15 Feb 2024 18:34:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=HBF+LVdVdbljcRTy2H6VQmOG3MQbudnuVmEETfu1gcY=; b=RzKS311im+jt67 /vIc/oWI3dDSIn4RX9DZ9mzmGUN5V346Pw2NP4ZW+UqAr3M4na4xb+VkH4eNYV+XrkdeZ5STR397j 2c1m0zaJJNwpLJhoX/zuDKMdv2hu/JowQuDLJDseLDLO5KNGvuFFk+lDlrlp3NGh4fPQWXXrnVC+i LdbU+t3FG/Qy2beqg/aR9k8VUNQlvVcyRokRH6DI2jv37aYQlH+maKqJmldL7KUOEC91WHsGRJBZW B/wL+vU7ZkKabMZX2oUoV53EYvgv7swQoGvsNmyhNaPeMbdHZgHyYpgs6Xa+9STzc+ldn5/5zvWxg XIhSqcmwMlZ2mTPUOfeQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1ragYm-0000000HNFo-1bu7; Thu, 15 Feb 2024 18:34:12 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1ragYj-0000000HNCT-1Ii0 for linux-arm-kernel@lists.infradead.org; Thu, 15 Feb 2024 18:34:10 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5567860FC9; Thu, 15 Feb 2024 18:34:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 38715C433C7; Thu, 15 Feb 2024 18:34:03 +0000 (UTC) Date: Thu, 15 Feb 2024 18:34:00 +0000 From: Catalin Marinas To: Ryan Roberts Cc: Will Deacon , Ard Biesheuvel , Marc Zyngier , James Morse , Andrey Ryabinin , Andrew Morton , Matthew Wilcox , Mark Rutland , David Hildenbrand , Kefeng Wang , John Hubbard , Zi Yan , Barry Song <21cnbao@gmail.com>, Alistair Popple , Yang Shi , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , linux-arm-kernel@lists.infradead.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 07/18] arm64/mm: Convert READ_ONCE(*ptep) to ptep_get(ptep) Message-ID: References: <20240215103205.2607016-1-ryan.roberts@arm.com> <20240215103205.2607016-8-ryan.roberts@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20240215103205.2607016-8-ryan.roberts@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240215_103409_417764_36C72C08 X-CRM114-Status: GOOD ( 14.59 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Feb 15, 2024 at 10:31:54AM +0000, Ryan Roberts wrote: > There are a number of places in the arch code that read a pte by using > the READ_ONCE() macro. Refactor these call sites to instead use the > ptep_get() helper, which itself is a READ_ONCE(). Generated code should > be the same. > > This will benefit us when we shortly introduce the transparent contpte > support. In this case, ptep_get() will become more complex so we now > have all the code abstracted through it. > > Tested-by: John Hubbard > Signed-off-by: Ryan Roberts Acked-by: Catalin Marinas _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel