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_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 16255C433DB for ; Mon, 25 Jan 2021 12:20:01 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 8050522DFB for ; Mon, 25 Jan 2021 12:20:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8050522DFB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 129A04B5C3; Mon, 25 Jan 2021 07:20:00 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qCdjMqhPt5Gk; Mon, 25 Jan 2021 07:19:58 -0500 (EST) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 7BBC64B5D5; Mon, 25 Jan 2021 07:19:58 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id EF2604B5C3 for ; Mon, 25 Jan 2021 07:19:56 -0500 (EST) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id j4SzgNGuZe87 for ; Mon, 25 Jan 2021 07:19:55 -0500 (EST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id CD2BA4B5A4 for ; Mon, 25 Jan 2021 07:19:55 -0500 (EST) Received: by mail.kernel.org (Postfix) with ESMTPSA id C8C41229C6; Mon, 25 Jan 2021 12:19:51 +0000 (UTC) Date: Mon, 25 Jan 2021 12:19:48 +0000 From: Catalin Marinas To: Marc Zyngier Subject: Re: [PATCH v5 10/21] arm64: cpufeature: Use IDreg override in __read_sysreg_by_encoding() Message-ID: <20210125121948.GF25360@gaia> References: <20210125105019.2946057-1-maz@kernel.org> <20210125105019.2946057-11-maz@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210125105019.2946057-11-maz@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) Cc: Prasad Sodagudi , Srinivas Ramana , linux-kernel@vger.kernel.org, Ard Biesheuvel , Ajay Patil , kernel-team@android.com, Will Deacon , kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On Mon, Jan 25, 2021 at 10:50:08AM +0000, Marc Zyngier wrote: > __read_sysreg_by_encoding() is used by a bunch of cpufeature helpers, > which should take the feature override into account. Let's do that. > > For a good measure (and because we are likely to need to further > down the line), make this helper available to the rest of the > non-modular kernel. > > Code that needs to know the *real* features of a CPU can still > use read_sysreg_s(), and find the bare, ugly truth. > > Signed-off-by: Marc Zyngier > Reviewed-by: Suzuki K Poulose > Acked-by: David Brazdil Reviewed-by: Catalin Marinas _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm