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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 B1B50C43142 for ; Fri, 22 Jun 2018 09:51:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6EAA23FB7 for ; Fri, 22 Jun 2018 09:51:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B6EAA23FB7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=alien8.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754280AbeFVJvR (ORCPT ); Fri, 22 Jun 2018 05:51:17 -0400 Received: from mail.skyhub.de ([5.9.137.197]:41128 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751242AbeFVJvQ (ORCPT ); Fri, 22 Jun 2018 05:51:16 -0400 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 cTrKK7OH2ESR; Fri, 22 Jun 2018 11:51:14 +0200 (CEST) Received: from zn.tnic (p200300EC2BCF3400329C23FFFEA6A903.dip0.t-ipconnect.de [IPv6:2003:ec:2bcf:3400:329c:23ff:fea6:a903]) (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 92C671EC0236; Fri, 22 Jun 2018 11:51:14 +0200 (CEST) From: Borislav Petkov To: KVM Cc: Joerg Roedel , Tom Lendacky , Tony Luck , Yazen Ghannam , LKML Subject: [PATCH 0/3] x86/kvm: Enable MCE injection in the guest Date: Fri, 22 Jun 2018 11:50:58 +0200 Message-Id: <20180622095101.32587-1-bp@alien8.de> X-Mailer: git-send-email 2.17.0.582.gccdcbd54c Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov Hi all, 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. Thx. Borislav Petkov (3): kvm/x86: Move MSR_K7_HWCR to svm.c x86/kvm: Implement MSR_HWCR support x86/kvm: Handle all MCA banks arch/x86/kvm/svm.c | 20 ++++++++++++++++++ arch/x86/kvm/x86.c | 51 ++++++++++++++++++++++++++++++---------------- 2 files changed, 54 insertions(+), 17 deletions(-) -- 2.17.0.582.gccdcbd54c