From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.16]) (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 7C5D31714A4; Wed, 9 Oct 2024 20:34:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728506097; cv=none; b=jLR3CRUHYpQTjZEZiymDgEVOZYbEsMk4voMB9JRkUYGLMz47U1jsoPqWEEvVNrCQYCgTBkLoVG9n5s2U7S+2RT7qjEui08qYIpRaGLOkfVi0djEpk+aCuqqYo5nxTaqbMNciBcqxaEe+lHox0typ/A3IG7O0zFMQBlL7MD69Y9o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728506097; c=relaxed/simple; bh=qt6O4TFup6l2Hiu5AxCdTSn2l50AeT3gR5vPwM87zqc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hIpyLTxmz99kSfr9ApA3ZEQMvfE5qLBAaN8VZoWZwlfj3Uj8yx+rQ3nMqJptSvxlTmc5mIlhC5P89wJR7uC/7ZjVvtTtfTf52TknXYZM5FGHy2Jli0ByXrWDy62ut6tsCxG6VvpvH9loKxeKu4XSMKcUZ1uTVNrjOynH1yE25Ww= 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=hW3mCtvU; arc=none smtp.client-ip=192.198.163.16 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="hW3mCtvU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1728506095; x=1760042095; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=qt6O4TFup6l2Hiu5AxCdTSn2l50AeT3gR5vPwM87zqc=; b=hW3mCtvUCFKg4m4gGhAcig+aTXbIFrtPgqSYI2TqudSZY2jKyqmuhJhQ FMJqUP8ImyxCnKGBE+eFURk8qrHwGfYLcSPfpFA7s/y5pDA18qcyoZX8s YZjIRRHoJwMCdXq/zlX4xXpj4CIJmRIOuBHoKpFn3PFWDu3ojf17l39tq NCTiXnyM47JQMCw2IZ6JsLlgBdkwr6YnwBP3lWmVKajdeZyxdpQcQZsCp 7wgV9jSSpt3ommy1P4C0ZKrgtwjEIl3UnRqnr4SguSwi97mg9b8pISIWd JAdakokswEhS3tEeMAWu2VHSCWT6p2OhDWeonr98hoFiDmMutL2O+5bHy w==; X-CSE-ConnectionGUID: TKssQWXfRf2xFgverFoDdQ== X-CSE-MsgGUID: nMPi65CMQmqGP+OQYfUDOA== X-IronPort-AV: E=McAfee;i="6700,10204,11220"; a="15454535" X-IronPort-AV: E=Sophos;i="6.11,190,1725346800"; d="scan'208";a="15454535" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2024 13:34:54 -0700 X-CSE-ConnectionGUID: qGvKCha/QXOfx5bwKqeUgQ== X-CSE-MsgGUID: FCIqEx2tTIufV7RB2QEYug== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.11,190,1725346800"; d="scan'208";a="76842358" Received: from yaaguila-mobl.amr.corp.intel.com (HELO [10.125.83.153]) ([10.125.83.153]) by orviesa007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Oct 2024 13:34:54 -0700 Message-ID: <0db4dd0a-61c7-4e04-ae8f-38d7e720ebe6@linux.intel.com> Date: Wed, 9 Oct 2024 13:34:52 -0700 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/6] x86/bugs: Create single parameter for VERW based mitigations To: "Kaplan, David" , Jonathan Corbet , Thomas Gleixner , Borislav Petkov , Peter Zijlstra , Josh Poimboeuf , Ingo Molnar , Dave Hansen , "x86@kernel.org" Cc: "hpa@zytor.com" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "pawan.kumar.gupta@linux.intel.com" References: <20240924223140.1054918-2-daniel.sneddon@linux.intel.com> <879b3437-c706-47c4-b1aa-b2def940f569@linux.intel.com> <7c1de6fb-fa83-47bc-a57b-e6700860513d@linux.intel.com> <83686f5b-7957-432c-9e2c-d54e381c06c9@linux.intel.com> Content-Language: en-US From: Daniel Sneddon In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/9/24 13:02, Kaplan, David wrote: > [AMD Official Use Only - AMD Internal Distribution Only] > >> -----Original Message----- >> From: Daniel Sneddon >> Sent: Wednesday, October 9, 2024 2:44 PM >> To: Kaplan, David ; Jonathan Corbet >> ; Thomas Gleixner ; Borislav Petkov >> ; Peter Zijlstra ; Josh Poimboeuf >> ; Ingo Molnar ; Dave Hansen >> ; x86@kernel.org >> Cc: hpa@zytor.com; linux-doc@vger.kernel.org; linux- >> kernel@vger.kernel.org; pawan.kumar.gupta@linux.intel.com >> Subject: Re: [PATCH 1/6] x86/bugs: Create single parameter for VERW based >> mitigations >> >> Caution: This message originated from an External Source. Use proper >> caution when opening attachments, clicking links, or responding. >> >> >> On 10/9/24 09:39, Daniel Sneddon wrote: >>> >>>>> >>>>> Are you suggesting a name change away from "clear_cpu_buffers" since >>>>> it is clearly about the mitigation rather than the bug? I'm not sure >>>>> there is a good common name for those 4 bugs that isn't about the >>>>> mitigation, but I'm open to any suggestions. >>>>> >>>> >>>> Yes, I think that would be better. I wasn't sure on a name either. In the >> RFDS webpage I see it described as "similar to data sampling transient >> execution attacks". Perhaps something like that could be an umbrella term? >>>> >> >> data sampling feels a little too generic. How about something like >> microarch_data_sampling? > > That's what MDS stands for right? Might be too associated with that one issue. Oops. Right. I'm so used to the acronym I can't even remember what it actually stands for! :) > > Maybe transient_data_sampling? > That'll work! Thanks! > --David Kaplan