From patchwork Wed May 19 13:52:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joerg Roedel X-Patchwork-Id: 12267383 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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, 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 7DDE6C43461 for ; Wed, 19 May 2021 13:53:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5DCC86100C for ; Wed, 19 May 2021 13:53:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353794AbhESNye (ORCPT ); Wed, 19 May 2021 09:54:34 -0400 Received: from 8bytes.org ([81.169.241.247]:39974 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239473AbhESNyc (ORCPT ); Wed, 19 May 2021 09:54:32 -0400 Received: from cap.home.8bytes.org (p549ad305.dip0.t-ipconnect.de [84.154.211.5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by theia.8bytes.org (Postfix) with ESMTPSA id EF587104; Wed, 19 May 2021 15:53:07 +0200 (CEST) From: Joerg Roedel To: x86@kernel.org, Hyunwook Baek Cc: Joerg Roedel , Joerg Roedel , hpa@zytor.com, Andy Lutomirski , Dave Hansen , Peter Zijlstra , Jiri Slaby , Dan Williams , Tom Lendacky , Juergen Gross , Kees Cook , David Rientjes , Cfir Cohen , Erdem Aktas , Masami Hiramatsu , Mike Stunes , Sean Christopherson , Martin Radev , Arvind Sankar , linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org Subject: [PATCH v2 0/8] x86/sev-es: Fixes for SEV-ES Guest Support Date: Wed, 19 May 2021 15:52:43 +0200 Message-Id: <20210519135251.30093-1-joro@8bytes.org> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Joerg Roedel Hi, here is the second version of my pending SEV-ES fixes. The most important patches are patch 1 to 5, as they fix warnings and splats that trigger with various debugging options are enabled. Patches 6 to 8 fix a correctness issue in the instruction emulation part of the #VC exception handler. Please review. Thanks, Joerg Link to v1: https://lore.kernel.org/lkml/20210512075445.18935-1-joro@8bytes.org/ Changes since v1: - Documented why __get_user()/__put_user() are safe to use in the #VC handlers memory access path. - Merged the revert into patch 3 - Refactored code in the instruction decoder and added #GP reporting when getting the instructions linear address fails. Joerg Roedel (8): x86/sev-es: Don't return NULL from sev_es_get_ghcb() x86/sev-es: Forward page-faults which happen during emulation x86/sev-es: Use __put_user()/__get_user() for data accesses x86/sev-es: Fix error message in runtime #VC handler x86/sev-es: Leave NMI-mode before sending signals x86/insn-eval: Make 0 a valid RIP for insn_get_effective_ip() x86/insn: Extend error reporting from insn_fetch_from_user[_inatomic]() x86/sev-es: Propagate #GP if getting linear instruction address failed arch/x86/include/asm/insn-eval.h | 6 +- arch/x86/kernel/sev.c | 127 +++++++++++++++++++++---------- arch/x86/kernel/umip.c | 10 +-- arch/x86/lib/insn-eval.c | 52 ++++++++----- 4 files changed, 129 insertions(+), 66 deletions(-) base-commit: a50c5bebc99c525e7fbc059988c6a5ab8680cb76