From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (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 4EC017DA95 for ; Tue, 18 Mar 2025 16:56:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742317018; cv=none; b=Z3wqcvKchIlsYnDn78kUA1eYhCI/SeUYqkXB/Kr3haEHvVfkooYRRSvMbvVNH166F1zlcoaG6vWcXSa7/KXJH2PK9uQjs0OQZiOp3suxDZ3T/2cuBZQa14mjEgD8FpbGFXur1wbOgZWCavKPtyaBtjchFoAGw4ToWfnUcvev6OI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742317018; c=relaxed/simple; bh=L8V6jfJN7SQ1flEiJyMtrfP1R57ohXQfUmzhu8MHfLo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=VsjltSnKNyxjf+TxVTvs5/5Ym57gEgeK2XPPhIXvib9jJ09Wpo5AfWe3i+xYY8mizQ7ILo0adYZW26vQ8/o7On2VKKyZ8ade2noutvLyS4Qm9FMe7B83dqanNqYpb8hXmAsFWxlMzGmYZZCx7iS2lrXYu9nLJsrCS3vt0SPwiAM= 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=DJJdeyB5; arc=none smtp.client-ip=198.175.65.20 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="DJJdeyB5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1742317017; x=1773853017; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=L8V6jfJN7SQ1flEiJyMtrfP1R57ohXQfUmzhu8MHfLo=; b=DJJdeyB5wylAzgJEcGYiuKNIVnBthey1iM7vasQLm7MPvQRk5a0zjcJE aGns/I631DUnM+XTWn8spKVsXESG2H5rfE/zNr3KVcSoq0/eq2R/ACeDl LS7CgTLyX5PmoesomCxZxsZFrv0qYbHGCJgv/Mt056KC7eayIq0/CqwE7 OxZBn7s0jSDF5V7mR79pjY6KMDPUUnVgY1Ld79aU5Fjf8Q4YtIuCN8oXs 7VzKbh9FYmi6iVecJsfaDEDIdCcS5TSO7dSTfUhUzI8cZpw5LYk+6B/aR SntF4uQLtaVRKuoJU2dAIhtu6Qm/kvRnaNN8cEIJjcOIShkmrqFOPi/bn w==; X-CSE-ConnectionGUID: JpTnuvObR0GVvEIVOGCNrg== X-CSE-MsgGUID: v1iFqqyrSqiQYLw0ZGbyyw== X-IronPort-AV: E=McAfee;i="6700,10204,11377"; a="43208052" X-IronPort-AV: E=Sophos;i="6.14,257,1736841600"; d="scan'208";a="43208052" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Mar 2025 09:56:55 -0700 X-CSE-ConnectionGUID: 31OAnG14T52SK0JDRCsYnw== X-CSE-MsgGUID: F2VsEEI8R3q7EZkfM3sbTw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,257,1736841600"; d="scan'208";a="122797108" Received: from eballerx-mobl.amr.corp.intel.com (HELO desk) ([10.125.145.191]) by fmviesa010-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Mar 2025 09:56:55 -0700 Date: Tue, 18 Mar 2025 09:56:45 -0700 From: Pawan Gupta To: Borislav Petkov Cc: David Kaplan , Thomas Gleixner , Peter Zijlstra , Josh Poimboeuf , Ingo Molnar , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , linux-kernel@vger.kernel.org, Brendan Jackman , Derek Manwaring Subject: Re: MMIO and VERW Message-ID: <20250318165645.lnutevfmtld3vu4d@desk> References: <20250310164023.779191-1-david.kaplan@amd.com> <20250310164023.779191-4-david.kaplan@amd.com> <20250313093617.GHZ9KnEXpdM4dwLYFz@fat_crate.local> <20250313192606.iijythngqtpx4tyy@desk> <20250318141659.GDZ9mAWwa3dkQDHkCk@fat_crate.local> <20250318162505.3ptnegnjz46hchep@desk> <20250318163451.GEZ9mgq7XsE1kIyiSy@fat_crate.local> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250318163451.GEZ9mgq7XsE1kIyiSy@fat_crate.local> On Tue, Mar 18, 2025 at 05:34:51PM +0100, Borislav Petkov wrote: > On Tue, Mar 18, 2025 at 09:25:05AM -0700, Pawan Gupta wrote: > > Rocket Lake, Comet Lake, Ice Lake with tsx=off only require VERW at > > VMENTER. There are other MMIO affected CPUs that are not affected by MDS > > and do not support TSX or disable it by default. > > So all those CPUs are only affected by MMIO and not affected by neither of > those: > > TAA, RFDS, MDS That is correct, they are not affected by MDS, TAA and RFDS. > Or is that the case only when TSX is not enabled/not present there? As per the affected CPU table [1], Ice Lake is not affected by TAA even if TSX is enabled. [1] https://www.intel.com/content/www/us/en/developer/topic-technology/software-security-guidance/processors-affected-consolidated-product-cpu-model.html#tab-blade-1-2