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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB755C433EF for ; Tue, 25 Jan 2022 07:39:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1446479AbiAYHje (ORCPT ); Tue, 25 Jan 2022 02:39:34 -0500 Received: from foss.arm.com ([217.140.110.172]:38178 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1322422AbiAYDVq (ORCPT ); Mon, 24 Jan 2022 22:21:46 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 57D826D; Mon, 24 Jan 2022 19:21:45 -0800 (PST) Received: from [10.163.42.113] (unknown [10.163.42.113]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 63E9A3F766; Mon, 24 Jan 2022 19:21:42 -0800 (PST) Subject: Re: [PATCH V3 0/7] coresight: trbe: Workaround Cortex-A510 erratas To: linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Will Deacon , Mathieu Poirier , Suzuki Poulose , coresight@lists.linaro.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org References: <1641872346-3270-1-git-send-email-anshuman.khandual@arm.com> From: Anshuman Khandual Message-ID: Date: Tue, 25 Jan 2022 08:51:47 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <1641872346-3270-1-git-send-email-anshuman.khandual@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 1/11/22 9:08 AM, Anshuman Khandual wrote: > This series adds three different workarounds in the TRBE driver for > Cortex-A510 specific erratas. But first, this adds Cortex-A510 specific cpu > part number definition in the platform. This series applies on 5.16. > > Relevant errata documents can be found here. > > https://developer.arm.com/documentation/SDEN2397239/900 > https://developer.arm.com/documentation/SDEN2397589/900 > > Changes in V3: > > - Moved the comment inside trbe_needs_drain_after_disable() > - Moved the comment inside trbe_needs_ctxt_sync_after_enable() > > Changes in V2: > > https://lore.kernel.org/all/1641517808-5735-1-git-send-email-anshuman.khandual@arm.com/ > > Accommodated most review comments from the previous version. > > - Split all patches into CPU errata definition, detection and TRBE workarounds > - s/TRBE_WORKAROUND_SYSREG_WRITE_FAILURE/TRBE_NEEDS_DRAIN_AFTER_DISABLE > - s/TRBE_WORKAROUND_CORRUPTION_WITH_ENABLE/TRBE_NEEDS_CTXT_SYNC_AFTER_ENABLE > - s/trbe_may_fail_sysreg_write()/trbe_needs_drain_after_disable() > - s/trbe_may_corrupt_with_enable()/trbe_needs_ctxt_sync_after_enable() > - Updated Kconfig help message for config ARM64_ERRATUM_1902691 > - Updated error message for trbe_is_broken() detection > - Added new trblimitr parameter to set_trbe_enabled(), improving performance > - Added COMPILE_TEST dependency in the errata, until TRBE part is available > > Changes in V1: > > https://lore.kernel.org/lkml/1641359159-22726-1-git-send-email-anshuman.khandual@arm.com/ > > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Mathieu Poirier > Cc: Suzuki Poulose > Cc: coresight@lists.linaro.org > Cc: linux-doc@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > > Anshuman Khandual (7): > arm64: Add Cortex-A510 CPU part definition > arm64: errata: Add detection for TRBE ignored system register writes > arm64: errata: Add detection for TRBE invalid prohibited states > arm64: errata: Add detection for TRBE trace data corruption > coresight: trbe: Work around the ignored system register writes > coresight: trbe: Work around the invalid prohibited states > coresight: trbe: Work around the trace data corruption Hello Catalin/Mathieu, I am wondering how this series is going to be merged i.e via arm64 or coresight tree ? Also will this require rebasing (and resend) against v5.17-rc1 release. Please do suggest. Thank you. - Anshuman