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=-8.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 57AF4C4332B for ; Fri, 20 Mar 2020 18:14:43 +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 2EC2C20777 for ; Fri, 20 Mar 2020 18:14:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="VnN+IRyq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2EC2C20777 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-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Ip1WgFe8odsB6HICxzfI24zsgA/nV591LSb5DNuYpc0=; b=VnN+IRyq3/xK+qE8k61AF5Gp4 5P/ARkY7pSTnW3KYHGcuMu6ODHGbT+OBK8e9RYwt2G0DDsCqgQqsqbKcgjGykwGaxbJlAOcmeddyl pAlq5ZK/RRJkN9EkRQgsrY+oWw74mmelR721i2PW81CIu7oDZTJL740ewEnQtFSiBcuL0KlpQDrba pFV/2VCSk9tQT27FAZMUfu3ldGicjcrDf/C2WVewODEYiSEkx6AcumXRoQUCxbId8LylubT8NWLDO Um9yWKOWuFRlQ1bPTluclZ434iwYc1wCThOZ72HdQqiuoA4QOVhBVF6DC20Swao2u54zAJKog1cpe 8z7gnzLTg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jFMAM-0002G3-Rh; Fri, 20 Mar 2020 18:14:42 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jFMAJ-0002Fc-QD for linux-arm-kernel@lists.infradead.org; Fri, 20 Mar 2020 18:14:41 +0000 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 2C0DE1FB; Fri, 20 Mar 2020 11:14:39 -0700 (PDT) Received: from [10.37.12.158] (unknown [10.37.12.158]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4D3FF3F305; Fri, 20 Mar 2020 11:14:37 -0700 (PDT) Subject: Re: [PATCH 5/6] arm64/cpufeature: Drop TraceFilt feature exposure from ID_DFR0 register To: anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org References: <1580215149-21492-1-git-send-email-anshuman.khandual@arm.com> <1580215149-21492-6-git-send-email-anshuman.khandual@arm.com> From: Suzuki K Poulose Message-ID: Date: Fri, 20 Mar 2020 18:19:21 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <1580215149-21492-6-git-send-email-anshuman.khandual@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200320_111439_898460_FF2606EF X-CRM114-Status: GOOD ( 15.49 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, james.morse@arm.com, maz@kernel.org, will@kernel.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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. 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