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 ; 06 Mar 2019 14:12:04 -0000 Received: from mx2.suse.de ([195.135.220.15] helo=mx1.suse.de) by Galois.linutronix.de with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1h1XH8-0005Ec-El for speck@linutronix.de; Wed, 06 Mar 2019 15:12:03 +0100 Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 8B363B9F7 for ; Wed, 6 Mar 2019 14:11:56 +0000 (UTC) Date: Wed, 6 Mar 2019 15:11:55 +0100 From: Borislav Petkov Subject: [MODERATED] Re: [patch V6 08/14] MDS basics 8 Message-ID: <20190306141155.GE21338@zn.tnic> References: <20190301214738.281554861@linutronix.de> <20190301214847.896222054@linutronix.de> MIME-Version: 1.0 In-Reply-To: <20190301214847.896222054@linutronix.de> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable To: speck@linutronix.de List-ID: On Fri, Mar 01, 2019 at 10:47:46PM +0100, speck for Thomas Gleixner wrote: > CPUs which are affected by L1TF and MDS mitigate MDS with the L1D Flush on > VMENTER when updated microcode is installed. >=20 > If a CPU is not affected by L1TF or if the L1D Flush is not in use, then > MDS mitigation needs to be invoked explicit. explicitly. >=20 > For these cases, follow the host mitigation state and invoke the MDS > mitigation before VMENTER. >=20 > Signed-off-by: Thomas Gleixner > Reviewed-by: Greg Kroah-Hartman > --- > V4 --> V5: Fix changelog > --- > arch/x86/kernel/cpu/bugs.c | 1 + > arch/x86/kvm/vmx/vmx.c | 2 ++ > 2 files changed, 3 insertions(+) With that: Reviewed-by: Borislav Petkov --=20 Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imend=C3=B6rffer, Jane Smithard, Graham Norton, HR= B 21284 (AG N=C3=BCrnberg) --=20