From patchwork Wed Nov 14 18:15:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Borislav Petkov X-Patchwork-Id: 10682987 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E9E40139B for ; Wed, 14 Nov 2018 18:15:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DC3AF2BE79 for ; Wed, 14 Nov 2018 18:15:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D09552BE7F; Wed, 14 Nov 2018 18:15:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 751522BE79 for ; Wed, 14 Nov 2018 18:15:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730966AbeKOETf (ORCPT ); Wed, 14 Nov 2018 23:19:35 -0500 Received: from mail.skyhub.de ([5.9.137.197]:43184 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727761AbeKOETf (ORCPT ); Wed, 14 Nov 2018 23:19:35 -0500 X-Virus-Scanned: Nedap ESD1 at mail.skyhub.de Received: from mail.skyhub.de ([127.0.0.1]) by localhost (blast.alien8.de [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id KblQ6j3jqPgk; Wed, 14 Nov 2018 19:15:19 +0100 (CET) Received: from zn.tnic (p200300EC2BD0D200D5714500C00E26FD.dip0.t-ipconnect.de [IPv6:2003:ec:2bd0:d200:d571:4500:c00e:26fd]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id CEC751EC037D; Wed, 14 Nov 2018 19:15:18 +0100 (CET) From: Borislav Petkov To: KVM Cc: Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= , Joerg Roedel , Tom Lendacky , Tony Luck , Yazen Ghannam , LKML Subject: [PATCH v3 0/2] x86/kvm: Enable MCE injection in the guest Date: Wed, 14 Nov 2018 19:15:05 +0100 Message-Id: <20181114181507.6037-1-bp@alien8.de> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Borislav Petkov Hi all, here's a rediff ontop of -rc2. No changes, only added Yazen's Tested-by. Please queue, thx. Changelog: ========== v2: here's v2, dropping patch 3 and incorporating hopefully all of Radim's feedback. v1: there's this mce-inject.ko module in the kernel which allows for injecting real MCEs and thus test the MCE handling code. It is doubly useful to be able to inject same MCEs in a guest so that testing of the MCE handling code can happen even easier/faster. In order to be able to do that on an AMD guest, we need to emulate some bits and pieces like the HWCR[McStatusWrEn] bit which allows writes to the MCi_STATUS registers without a #GP. The below does that and with it I'm able to properly inject MCEs in said guest. --- Borislav Petkov (2): kvm/x86: Move MSR_K7_HWCR to svm.c x86/kvm: Implement MSR_HWCR support arch/x86/kvm/svm.c | 20 ++++++++++++++++++++ arch/x86/kvm/x86.c | 46 +++++++++++++++++++++++++++++++--------------- 2 files changed, 51 insertions(+), 15 deletions(-)