From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5537FC74A35 for ; Wed, 10 Jul 2019 21:15:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27A75208C4 for ; Wed, 10 Jul 2019 21:15:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727479AbfGJVPE (ORCPT ); Wed, 10 Jul 2019 17:15:04 -0400 Received: from lizzard.sbs.de ([194.138.37.39]:49286 "EHLO lizzard.sbs.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727287AbfGJVPE (ORCPT ); Wed, 10 Jul 2019 17:15:04 -0400 Received: from mail1.sbs.de (mail1.sbs.de [192.129.41.35]) by lizzard.sbs.de (8.15.2/8.15.2) with ESMTPS id x6ALEoUl018512 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 10 Jul 2019 23:14:50 +0200 Received: from [139.22.38.2] ([139.22.38.2]) by mail1.sbs.de (8.15.2/8.15.2) with ESMTP id x6ALEmqI009125; Wed, 10 Jul 2019 23:14:49 +0200 Subject: Re: KVM_SET_NESTED_STATE not yet stable From: Jan Kiszka To: "Raslan, KarimAllah" , "jmattson@google.com" , "liran.alon@oracle.com" , "kvm@vger.kernel.org" , "pbonzini@redhat.com" Cc: Ralf Ramsauer References: <9eb4dd9f-65e5-627d-b288-e5fe8ade0963@siemens.com> <1562772280.18613.25.camel@amazon.de>

Message-ID: <9803d517-f52b-66b8-cefc-d5b89e55de75@siemens.com> Date: Wed, 10 Jul 2019 23:14:49 +0200 User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 10.07.19 22:31, Jan Kiszka wrote: > And on a Xeon D-1540, I'm not seeing a crash but a kvm entry failure when > resetting L1 while running Jailhouse: > > KVM: entry failed, hardware error 0x7 > EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000f61 > ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000 > EIP=0000fff0 EFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 > ES =0000 00000000 0000ffff 00009300 > CS =f000 ffff0000 0000ffff 00a09b00 > SS =0000 00000000 0000ffff 00c09300 > DS =0000 00000000 0000ffff 00009300 > FS =0000 00000000 0000ffff 00009300 > GS =0000 00000000 0000ffff 00009300 > LDT=0000 00000000 0000ffff 00008200 > TR =0000 00000000 0000ffff 00008b00 > GDT= 00000000 0000ffff > IDT= 00000000 0000ffff > CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000680 > DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 > DR6=00000000ffff0ff0 DR7=0000000000000400 > EFER=0000000000000000 > Code=00 66 89 d8 66 e8 af a1 ff ff 66 83 c4 0c 66 5b 66 5e 66 c3 5b e0 00 > f0 30 36 2f 32 33 2f 39 39 00 fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > OK, looks like the feature diff was a red herring: Ralf found a server with even more features and without a crash, and I found familiar error messages in the kernel log of that Xeon D: kvm: vmptrld (null)/778000000000 failed kvm: vmclear fail: (null)/778000000000 Only difference: No crash, just that more graceful entry failure. Jan -- Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate Competence Center Embedded Linux