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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT 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 993D0C43219 for ; Wed, 1 May 2019 14:15:25 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 6A5D020866 for ; Wed, 1 May 2019 14:15:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="FS5ZHXfo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A5D020866 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject: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=q34Jpvaiq7ckD6dmHHRaDVRCvnQXRr6grrqqmIYAXbA=; b=FS5ZHXfoNsRLui 9ujg8mxv4ChKp9zehxRF0jTENsiJD+03h0+u4G1LHxqnJkwLqyuHCV6iOwbhP4PEd4DSlzoodQdT5 7OpRDCJJO8HeSWxpcyjJG7NBaz1o58Y81t8Oc+AOY6AJmUaUXepNoPBg843DUuUNcdQN4Vh3QL1ma K48dgcvyJMHViveIKdXXShMTJCaNEnx2Pg/CYWoU+PQFIb+O9+n2x12q0hH5TRO+HlV0BX/kFntpX 1HXCzCSumHn+Rj6PHN2TvQkJwjPkycV/68qNV/pRjdrk4bASP+xMGrvKinFHdCk2Jl0Ax3eBp9oKP LAheWK2/jVkZQbdivxCg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hLq0y-0000YQ-FR; Wed, 01 May 2019 14:15:16 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hLq0u-0000Xq-T2 for linux-arm-kernel@lists.infradead.org; Wed, 01 May 2019 14:15:14 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id F273BA78; Wed, 1 May 2019 07:15:10 -0700 (PDT) Received: from fuggles.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id ED2A83F719; Wed, 1 May 2019 07:15:08 -0700 (PDT) Date: Wed, 1 May 2019 15:15:06 +0100 From: Will Deacon To: Jeremy Linton Subject: Re: [PATCH v2 0/5] arm64: SPE ACPI enablement Message-ID: <20190501141506.GC27353@fuggles.cambridge.arm.com> References: <20190426220309.55654-1-jeremy.linton@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190426220309.55654-1-jeremy.linton@arm.com> User-Agent: Mutt/1.11.1+86 (6f28e57d73f2) () X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190501_071512_946153_9DAC4581 X-CRM114-Status: GOOD ( 16.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, lorenzo.pieralisi@arm.com, catalin.marinas@arm.com, john.garry@huawei.com, rjw@rjwysocki.net, linuxarm@huawei.com, linux-acpi@vger.kernel.org, sudeep.holla@arm.com, linux-arm-kernel@lists.infradead.org, lenb@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Jeremy, On Fri, Apr 26, 2019 at 05:03:04PM -0500, Jeremy Linton wrote: > This patch series enables the Arm Statistical Profiling > Extension (SPE) on ACPI platforms. > > This is possible because ACPI 6.3 uses a previously > reserved field in the MADT to store the SPE interrupt > number, similarly to how the normal PMU is described. > If a consistent valid interrupt exists across all the > cores in the system, a platform device is registered. > That then triggers the SPE module, which runs as normal. > > This version also adds the ability to parse the PPTT for > IDENTICAL cores. We then use this to sanity check the > single SPE device we create. This creates a bit of a > problem with respect to the specification though. The > specification says that its legal for multiple tree's > to exist in the PPTT. We handle this fine, but what > happens in the case of multiple tree's is that the lack > of a common node with IDENTICAL set forces us to assume > that there are multiple non IDENTICAL cores in the > machine. This looks good to me. Please can you respin, addressing Raphael's outstanding concerns on the third patch? Will _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel