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 4B1B1C43141 for ; Thu, 28 Jun 2018 17:38:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E31CE248A5 for ; Thu, 28 Jun 2018 17:38:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E31CE248A5 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 S967579AbeF1RiT (ORCPT ); Thu, 28 Jun 2018 13:38:19 -0400 Received: from mail.skyhub.de ([5.9.137.197]:37044 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967479AbeF1RiR (ORCPT ); Thu, 28 Jun 2018 13:38:17 -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 SEVBtt_KE2vW; Thu, 28 Jun 2018 19:38:15 +0200 (CEST) Received: from zn.tnic (p200300EC2BD08A00329C23FFFEA6A903.dip0.t-ipconnect.de [IPv6:2003:ec:2bd0:8a00:329c: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 C6F751EC03AD; Thu, 28 Jun 2018 19:38:15 +0200 (CEST) From: Borislav Petkov To: KVM Cc: Joerg Roedel , =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Tom Lendacky , Tony Luck , Yazen Ghannam , LKML Subject: [PATCH 0/2] x86/kvm: Enable MCE injection in the guest v2 Date: Thu, 28 Jun 2018 19:38:06 +0200 Message-Id: <20180628173808.25885-1-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, here's v2, dropping patch 3 and incorporating hopefully all of Radim's feedback. Thx. v1 cover letter: 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(-) -- 2.17.0.582.gccdcbd54c