Received: by 2002:a05:622a:251a:b0:39a:b4a2:e86 with SMTP id cm26csp313733qtb; Wed, 19 Oct 2022 02:37:46 -0700 (PDT) X-Google-Smtp-Source: AMsMyM5isZ9UFHYzzyjVZDek4RF2LVl0FDBDJoRB0539iXGxJS+By0yJ+4kpkn/I7tFYmgBdVIRm X-Received: by 2002:a05:6402:1b08:b0:458:d229:bcac with SMTP id by8-20020a0564021b0800b00458d229bcacmr6424009edb.118.1666172265924; Wed, 19 Oct 2022 02:37:45 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1666172265; cv=none; d=google.com; s=arc-20160816; b=zHhWid0vE/Ff29XHT3M9rfMqkEmCTSDcRKlHSoNmLbgEA5Mp5d19ydQTRB1SDbK7CU lTvlOUcN2yW+AGsiA9u933m6FBS1MNarbMJuY5MZgFjfkSzlMqk0my19Lf+nDK3p5tTI ZD9+iWbLsS7GGyGx8+zlibIoYyrIF8gp9M/1q4LooDClSg2BbTS6tkMv3X166Eb703Ou Wqw9P+zgacP8n/4G2Bgf5HtEZWdZF+X646bl+t8UCt2DMCpebVnYCZDi07VN2Q8cfBsE +ZRtnOmfcPy7DOwtnyft5KW3nYb3h3PKgmCdD/mdW28UClKsPyp8067R2VPBOEBhR1JB 6Ngg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=e/05vtL3e/h8I5D8aNJsFpE9yNHf7vv2MC9iGk/Z/xo=; b=YS0QK4vJjmHpWy6fwLc7Z1l86wNiIlIy+kYLci+z0cQvp5EtvpaKZPXtWaP7uIrPF0 GswaXn9Qj50FKcv2vQmU8o21EpQfFTObPSp4GNCfevfkAF2GQd9zxWc6nTtqKvp7P4Km pyIbMaqEVZ14a2+u/n0LYDdMJxqS1C0PbORSNpvPvXpExY1hyXKQY7DjN0xblVyOf173 AhDTVYB6xIrSPqcd7A1SJxNX9rKy4dX1NtPhovbu05h/61TmGh2dIyk2K10hQQTzCgTz cSe6Z7PzvX1ary5sAloC+z8714A7tFRYu3y5a2LCrt2YXjwDrxfBrQUPB37BJ26h1efq jrng== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail (test mode) header.i=@armlinux.org.uk header.s=pandora-2019 header.b=mYz4VmAw; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=armlinux.org.uk Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id nd18-20020a170907629200b0078d3b452573si15364957ejc.968.2022.10.19.02.37.19; Wed, 19 Oct 2022 02:37:45 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=fail (test mode) header.i=@armlinux.org.uk header.s=pandora-2019 header.b=mYz4VmAw; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=armlinux.org.uk Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232662AbiJSJIY (ORCPT + 99 others); Wed, 19 Oct 2022 05:08:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232364AbiJSJFs (ORCPT ); Wed, 19 Oct 2022 05:05:48 -0400 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B595121A for ; Wed, 19 Oct 2022 01:59:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=e/05vtL3e/h8I5D8aNJsFpE9yNHf7vv2MC9iGk/Z/xo=; b=mYz4VmAwJs4WLjg3KwmQSHUNn6 zjIu2MWjjda50OJmlIEAWcV05OvnCVI35YWd+P3lqlUjP9AXtH9+gbrRC3PqGQGQQP6+xrixUpLXy AsnDpZ8f2tdmCGxTLjKcOXECwbykdsKW5B+z6iiMH0nRiTPzR42hj5mg7aD8dBLAWHNR9upz6A6y8 A9+8r4X5jBcWxZHsubFNdiBBwQAa2nHyajSRyRrhdjtbj0OCuVNSc9cySGxLkyjRbFGwLvY8LF/xu SF9QjOiWbVH2s2OaGpx4l46nBVCQWn/EBADoFSOIP+md+jFWvHF3KlLW9xcgrjR7aAUF8SDZEYBn5 reo/Icmw==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:34786) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1ol4iq-0005Mw-Po; Wed, 19 Oct 2022 09:46:46 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1ol4im-0001xS-D1; Wed, 19 Oct 2022 09:46:40 +0100 Date: Wed, 19 Oct 2022 09:46:40 +0100 From: "Russell King (Oracle)" To: Suzuki Kuruppassery Poulose Cc: Xiongfeng Wang , yehaiyang2@hisilicon.com, wanghuiqiang , Linux Kernel Mailing List , "linux-arm-kernel@lists.infradead.org" , mark.rutland@arm.com, Catalin Marinas , Anshuman Khandual Subject: Re: [Question] Question about supporting sysreg only CoreSight ETMv4.4 on ACPI machines Message-ID: References: <6e85db13-a65f-d4c6-1b6b-660a94cb7060@huawei.com> <9fc5ab20-c7f0-a917-4938-403e3661109f@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9fc5ab20-c7f0-a917-4938-403e3661109f@arm.com> Sender: Russell King (Oracle) X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 18, 2022 at 10:18:08AM +0100, Suzuki Kuruppassery Poulose wrote: > That is true. Unfortunately, supporting this requires us to move away from > the AMBA framework (at least) for ETM4x devices. This is currently > developed by Anshuman. We can share it as soon as this is complete. Can we not find a way to create AMBA devices from ACPI? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!