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=-7.0 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 A3F83C433DB for ; Tue, 23 Mar 2021 16:35:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 643926199F for ; Tue, 23 Mar 2021 16:35:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233281AbhCWQez (ORCPT ); Tue, 23 Mar 2021 12:34:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:43406 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233268AbhCWQel (ORCPT ); Tue, 23 Mar 2021 12:34:41 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1C38561993; Tue, 23 Mar 2021 16:34:41 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=hot-poop.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1lOjzL-003LZr-1d; Tue, 23 Mar 2021 16:34:39 +0000 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, Suzuki K Poulose Cc: leo.yan@linaro.org, catalin.marinas@arm.com, Linu Cherian , Will Deacon , coresight@lists.linaro.org, Peter Zilstra , anshuman.khandual@arm.com, mike.leach@linaro.org, mathieu.poirier@linaro.org, linux-kernel@vger.kernel.org Subject: Re: (subset) [PATCH v5 00/19] coresight: Add support for ETE and TRBE Date: Tue, 23 Mar 2021 16:34:36 +0000 Message-Id: <161651726490.2050093.5536833570808361940.b4-ty@kernel.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210323120647.454211-1-suzuki.poulose@arm.com> References: <20210323120647.454211-1-suzuki.poulose@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, suzuki.poulose@arm.com, leo.yan@linaro.org, catalin.marinas@arm.com, lcherian@marvell.com, will@kernel.org, coresight@lists.linaro.org, peterz@infradead.org, anshuman.khandual@arm.com, mike.leach@linaro.org, mathieu.poirier@linaro.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 23 Mar 2021 12:06:28 +0000, Suzuki K Poulose wrote: > This series enables future IP trace features Embedded Trace Extension > (ETE) and Trace Buffer Extension (TRBE). This series applies on > v5.12-rc4 + some patches queued. A standalone tree is also available here [0]. > The queued patches (almost there) are included in this posting for > the sake of constructing a tree from the posting. > > ETE is the PE (CPU) trace unit for CPUs, implementing future > architecture extensions. ETE overlaps with the ETMv4 architecture, with > additions to support the newer architecture features and some restrictions > on the supported features w.r.t ETMv4. The ETE support is added by extending > the ETMv4 driver to recognise the ETE and handle the features as exposed by > the TRCIDRx registers. ETE only supports system instructions access from the > host CPU. The ETE could be integrated with a TRBE (see below), or with > the legacy CoreSight trace bus (e.g, ETRs). Thus the ETE follows same > firmware description as the ETMs and requires a node per instance. > > [...] Applied to fixes, thanks! [01/19] kvm: arm64: Hide system instruction access to Trace registers commit: 4af0afe252a2701732c317585f7c3ef6596b8f3d Cheers, M. -- Without deviation from the norm, progress is not possible.