Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755743AbcCTSwe (ORCPT ); Sun, 20 Mar 2016 14:52:34 -0400 Received: from mail-lb0-f178.google.com ([209.85.217.178]:36743 "EHLO mail-lb0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753870AbcCTSmg (ORCPT ); Sun, 20 Mar 2016 14:42:36 -0400 MIME-Version: 1.0 In-Reply-To: <20160320182516.GE4230@pd.tnic> References: <20160317165435.GB3022@torres.zugschlus.de> <20160317181128.GA30324@pd.tnic> <20160318184929.GA949@torres.zugschlus.de> <20160318220429.GH7817@pd.tnic> <20160319000837.GF10135@torres.zugschlus.de> <20160320133158.GD4230@pd.tnic> <20160320182516.GE4230@pd.tnic> From: Andrey Korolyov Date: Sun, 20 Mar 2016 21:42:15 +0300 Message-ID: Subject: Re: Major KVM issues with kernel 4.5 on the host To: Borislav Petkov Cc: Marc Haber , Linux Kernel Mailing List , kvm ML Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 753 Lines: 16 On Sun, Mar 20, 2016 at 9:25 PM, Borislav Petkov wrote: > On Sun, Mar 20, 2016 at 08:14:58PM +0300, Andrey Korolyov wrote: >> Kinda naive question - do you run same ucode version as Marc on his device? > > Yeah, we both have 0x010000dc. > > In case you're referring to the recent faulty AMD microcode patch - > it doesn't apply here. The boxes in question are family 0x10 and the > microcode patch is for family 0x15. > Yes, I suggested that the issue could fall over a different family as well to expose explicit corruption of a guest pages (as opposed to a generic corruption in a known case). Since there is no direct evidence of what exactly (data or pgt) is getting corrupted, would disabling npt for a testing purposes be helpful?