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=-14.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 1BEF9C47080 for ; Tue, 1 Jun 2021 18:21:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 035C961396 for ; Tue, 1 Jun 2021 18:21:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234637AbhFASXL (ORCPT ); Tue, 1 Jun 2021 14:23:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:39346 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234622AbhFASXK (ORCPT ); Tue, 1 Jun 2021 14:23:10 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 334EC613D5; Tue, 1 Jun 2021 18:21:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622571688; bh=2LkiZTd7WmnTPbe1jx3qQ01dv/8NESevXvihBHnGz2U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aQ4hUhTV9yk7DpHXZZxe22oEyovRk43hL5EoCX/gf1kObhlDNTgJXPuCet0n+WpV3 i9Jk15r+opGUH/cD/5eYb6GqGljQz3PEk950ZDKoljiBThLMqBJwNWjZvfhF6j3K54 QhR9h4Y/XrhzD6X2hS4QWU4djF0u1P6NzTAF1klZ8u82+lnXP3KdFNDKssahHqQ+yQ 5Vnlm+WtG7KIl9mWq6N3Ag+VdsjqH3jNiI/F1P1MUtFi+i0g/2PoqAI8o08SVJMOjC DFqX3xasRXO5ygZhsW3MIPHrjUWS9KP9ijUcEm/NhAyI12IGiwkPJ/rxwI8LJaqceU +kzthHYM3qjZA== From: Will Deacon To: mark.rutland@arm.com, namhyung@kernel.org, linux-arm-kernel@lists.infradead.org, acme@kernel.org, peterz@infradead.org, linux-kernel@vger.kernel.org, alexander.shishkin@linux.intel.com, suzuki.poulose@arm.com, mingo@redhat.com, jolsa@redhat.com, Yang Jihong , linux@armlinux.org.uk, julien.thierry.kdev@gmail.com Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon Subject: Re: [PATCH] arm_pmu: Fix write counter incorrect in ARMv7 big-endian mode Date: Tue, 1 Jun 2021 19:21:05 +0100 Message-Id: <162255342222.565985.6841867867771052763.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210430012659.232110-1-yangjihong1@huawei.com> References: <20210430012659.232110-1-yangjihong1@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 30 Apr 2021 09:26:59 +0800, Yang Jihong wrote: > Commit 3a95200d3f89a ("arm_pmu: Change API to support 64bit counter values") > changes the input "value" type from 32-bit to 64-bit, > which introduces the following problem: > ARMv7 PMU counters is 32-bit width, in big-endian mode, write counter uses > high 32-bit, which writes an incorrect value. > > Before: > > [...] Applied to will (for-next/perf), thanks! [1/1] arm_pmu: Fix write counter incorrect in ARMv7 big-endian mode https://git.kernel.org/will/c/fdbef8c4e68a Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev