From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linutronix.de (146.0.238.70:993) by crypto-ml.lab.linutronix.de with IMAP4-SSL for ; 20 Aug 2018 20:18:17 -0000 Received: from mga12.intel.com ([192.55.52.136]) by Galois.linutronix.de with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1frqcy-0004nB-6y for speck@linutronix.de; Mon, 20 Aug 2018 22:18:16 +0200 Date: Mon, 20 Aug 2018 13:18:09 -0700 From: "Luck, Tony" Subject: [MODERATED] Re: L1TF counter Message-ID: <20180820201809.GA16987@agluck-desk> References: <20180820165251.GA29877@char.us.oracle.com> <6c2198e5-50a2-0f36-caf2-d0a2b26812eb@citrix.com> <20180820172002.GA31606@char.us.oracle.com> MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable To: speck@linutronix.de List-ID: On Mon, Aug 20, 2018 at 09:44:15PM +0200, speck for Thomas Gleixner wrote: > On Mon, 20 Aug 2018, speck for Konrad Rzeszutek Wilk wrote: > > On Mon, Aug 20, 2018 at 06:11:26PM +0100, speck for Andrew Cooper wrote: > > > On 20/08/2018 17:52, speck for Konrad Rzeszutek Wilk wrote: > > > > Hey, > > > > > > > > Intel has mentioned that they are working on a new microcode which can > > > > be used to detect L1TF conditions.=20 > > > > > > > > Anyone is working on it? I was thinking to start crafting patches > > > > based on the description of the MSR and post them here for review. > > > > > > > > But if someone is already busy with that I would rather review them := -) > > > > > > >=20 > > > There are no details currently available.=C2=A0 Intel are planning to g= et us > > > production signed alpha builds of microcode as soon as they've worked > > > out why the latest build isn't working. > >=20 > > Sure. But the PDF is there. Or are you saying it is pointless as they may > > change the PDF again? >=20 > 1) Which PDF? It's been shared with some partners (but really doesn't say much yet, just that the MSR has a couple of counts that help to detect L1TF attacks). > 2) Is this secrit sauce or can we just discuss that on LKML? Yes secrit sauce. No discussion on public lists yet. -Tony