From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linutronix.de (193.142.43.55:993) by crypto-ml.lab.linutronix.de with IMAP4-SSL for ; 25 Feb 2020 10:47:14 -0000 Received: from mx2.suse.de ([195.135.220.15]) by Galois.linutronix.de with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1j6Xk8-000111-UH for speck@linutronix.de; Tue, 25 Feb 2020 11:47:13 +0100 Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 83A7DABC7 for ; Tue, 25 Feb 2020 10:47:06 +0000 (UTC) Date: Tue, 25 Feb 2020 11:46:58 +0100 From: Borislav Petkov Subject: [MODERATED] Re: [PATCH 2/2] more sampling fun 2 Message-ID: <20200225104658.GA6012@zn.tnic> References: <20200224173121.GA32673@char.us.oracle.com> <20200224181734.GB29636@zn.tnic> <20200224213929.GA100552@mtg-dev.jf.intel.com> <20200224231034.GE29636@zn.tnic> <20200225012641.slc34bromzk3yj3l@treble> MIME-Version: 1.0 In-Reply-To: <20200225012641.slc34bromzk3yj3l@treble> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable To: speck@linutronix.de List-ID: On Mon, Feb 24, 2020 at 07:26:41PM -0600, speck for Josh Poimboeuf wrote: > Why not just srbds=3D ? That's what Intel calls it, and it would be > consistent with some of the other options like mds=3D and l1tf=3D. For the same reason we did "spec_store_bypass_disable=3D" and not "ssbd=3D". Although former is a bit longish for my taste, it doesn't make you go look it up as "ssbd" does. And with "mds" and "l1tf" we dropped the ball again. :-\ Over time, they would all become a letters jumble which we all would have to go look up. So I think at least *trying* to make them a bit more understandable/parseable for humans, would be beneficial in the long run. So, for example, when I see "srb_sampling=3Doff" at least I know, oh, ok, it disables sampling of that SRB thing. "srbds" tells me exactly nothing and the potential for flipping those letters' position is high. --=20 Regards/Gruss, Boris. SUSE Software Solutions Germany GmbH, GF: Felix Imend=C3=B6rffer, HRB 36809, = AG N=C3=BCrnberg --=20