From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AD9D11170D for ; Fri, 19 Apr 2024 20:33:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713558803; cv=none; b=f0TKJ0y3AvFbsS2W/r8pT9B82Ey9i10L7Npo6dMrD5+2qQhXYPnbd4VpKtmXL0gP9nK1bCLJ6Uakw32DRW35YRc8dV1K/C6Ln+zPlddObbVbODeMJA54BpO3UxLrQFa430tzP1Hb1BEJVd0kvlXs+qFgIRNPoaFihxX7+QOeGLw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713558803; c=relaxed/simple; bh=+7yAnQjLOwY8eotLH3n+GRmYa/kTB7nFodBZZ3/Ch0k=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=K8bTtxU6Quob4U6jeGyBqX39jKV0h6rTzNm0sbdEZhCWOAYWGTcdEmbV7Bo4z+4JLCJ7VM9OrYFmjfQb88nyAX/GUKvOtk2o2kgzYpbNgdw8wSB5WPC4wKuHaJ8iK10dQ71OC6fFcqjV+TXc3TT4r9M64R+cNDApIAu85Xe70uU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=SJr8GvuA; arc=none smtp.client-ip=192.198.163.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="SJr8GvuA" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1713558801; x=1745094801; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=+7yAnQjLOwY8eotLH3n+GRmYa/kTB7nFodBZZ3/Ch0k=; b=SJr8GvuAUm7pgXNkQSX9ZEqgSQ6IpgkzNLoxeIsx3VLbhCwKR0Rc3c+8 cYS9FlM66n90+k5LcIJdnh7XMxy+8QWFrbe8wjlGRz0RXayj2tpTbgIBN zc4tOLuXcOsd6qOOWpXfzlGBrejUEp7ALranSiX142M+cavJsMyy6kLxM bup+54kviQPXD8ySyBhklX/ZwGrakbKavP5sfDrGO9sj3UvFCuwemSdKM FeVuSE/qZRWkPtM9526l8/cKUZlEPzrIkpP27pyBvz2vQyd+2LA5bSmgQ 1uRf1yiJc9OZtTMBoVfenZnzAJtj1klXV4BjZpZBOv6+EhL9w9Wm60z+o g==; X-CSE-ConnectionGUID: 31Y0WEgfT3eI18lGn5S6Gg== X-CSE-MsgGUID: 2PrTJCCwTLaRpm5dtrVG5A== X-IronPort-AV: E=McAfee;i="6600,9927,11049"; a="26694651" X-IronPort-AV: E=Sophos;i="6.07,214,1708416000"; d="scan'208";a="26694651" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Apr 2024 13:33:21 -0700 X-CSE-ConnectionGUID: JDSwDXOsQ7W00BXO1srI2A== X-CSE-MsgGUID: C87isBRxRteH+yj/0ZGzHA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,214,1708416000"; d="scan'208";a="23462599" Received: from mmihaitx-mobl.ger.corp.intel.com (HELO [10.125.66.30]) ([10.125.66.30]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Apr 2024 13:33:20 -0700 Message-ID: Date: Fri, 19 Apr 2024 13:33:18 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 15/14] x86/gds: Lock GDS mitigation when keylocker feature is present To: Pawan Gupta Cc: linux-kernel@vger.kernel.org, x86@kernel.org, dan.j.williams@intel.com, bernie.keany@intel.com, charishma1.gairuboyina@intel.com, chang.seok.bae@intel.com, Josh Poimboeuf , antonio.gomez.iglesias@linux.intel.com References: <20240407230432.912290-1-chang.seok.bae@intel.com> <20240419-gds-lock-v1-1-adcbef6ce24b@linux.intel.com> <24713e0d-779f-4084-ba5c-7375d4b05955@linux.intel.com> <20240419201918.czmg6rq3whovhafw@desk> Content-Language: en-US From: Daniel Sneddon In-Reply-To: <20240419201918.czmg6rq3whovhafw@desk> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 4/19/24 13:19, Pawan Gupta wrote: > ... mcu_ctrl is read here, it will overwrite any previous value.Ah, yep. Bummer.