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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 3B020C43331 for ; Thu, 2 Apr 2020 03:01:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 13E5D2063A for ; Thu, 2 Apr 2020 03:01:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733224AbgDBDAf (ORCPT ); Wed, 1 Apr 2020 23:00:35 -0400 Received: from foss.arm.com ([217.140.110.172]:36634 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732498AbgDBDAf (ORCPT ); Wed, 1 Apr 2020 23:00:35 -0400 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 4F9C330E; Wed, 1 Apr 2020 20:00:34 -0700 (PDT) Received: from [10.163.1.8] (unknown [10.163.1.8]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0DFED3F71E; Wed, 1 Apr 2020 20:00:31 -0700 (PDT) Subject: Re: [PATCH 5/6] arm64/cpufeature: Drop TraceFilt feature exposure from ID_DFR0 register To: Suzuki K Poulose , linux-arm-kernel@lists.infradead.org Cc: mark.rutland@arm.com, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, james.morse@arm.com, maz@kernel.org, will@kernel.org References: <1580215149-21492-1-git-send-email-anshuman.khandual@arm.com> <1580215149-21492-6-git-send-email-anshuman.khandual@arm.com> From: Anshuman Khandual Message-ID: <2b04eac1-b0e1-ec70-34dd-5bd64af8ada2@arm.com> Date: Thu, 2 Apr 2020 08:30:25 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/20/2020 11:49 PM, Suzuki K Poulose wrote: > On 01/28/2020 12:39 PM, Anshuman Khandual wrote: >> ID_DFR0 based TraceFilt feature should not be exposed. > > ... to guests. > >  Hence lets drop it. Sure, will do. > > Reviewed-by: Suzuki K Poulose > >> >> Cc: Catalin Marinas >> Cc: Will Deacon >> Cc: James Morse >> Cc: Suzuki K Poulose >> Cc: Marc Zyngier >> Cc: Mark Rutland >> Cc: linux-kernel@vger.kernel.org >> Signed-off-by: Anshuman Khandual >> --- >>   arch/arm64/kernel/cpufeature.c | 1 - >>   1 file changed, 1 deletion(-) >> >> diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c >> index 2726bd6441da..a8ded1f0eeaf 100644 >> --- a/arch/arm64/kernel/cpufeature.c >> +++ b/arch/arm64/kernel/cpufeature.c >> @@ -374,7 +374,6 @@ static const struct arm64_ftr_bits ftr_id_pfr2[] = { >>   }; >>     static const struct arm64_ftr_bits ftr_id_dfr0[] = { >> -    ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 28, 4, 0), >>       S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 24, 4, 0xf),    /* PerfMon */ >>       ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 20, 4, 0), >>       ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 16, 4, 0), >> > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >