From patchwork Fri Dec 4 01:18:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 11950331 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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 EACF4C193FE for ; Fri, 4 Dec 2020 01:20:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9E05C224D1 for ; Fri, 4 Dec 2020 01:20:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388396AbgLDBUO (ORCPT ); Thu, 3 Dec 2020 20:20:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56472 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388385AbgLDBUN (ORCPT ); Thu, 3 Dec 2020 20:20:13 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 60802C08E860 for ; Thu, 3 Dec 2020 17:18:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Message-Id:Date:Subject:Cc:To:From:Reply-To: Content-ID:Content-Description:In-Reply-To:References; bh=5/ALs+wec0ATyor0qyB+ptL8rnFvrdLxgaVqB/c//Ts=; b=pLlRSn7dVAbUIKxLAgtAS/gZII 8p/OqVEbwlRWZEgJy8zgLBWM5nvNS4iFvNYr6fHF3/jO/5fMnMXCnV2io2TDIG+s7s+2TvKmNYYGp WgMl5d8NDGc4TuCaE8JGleWKePJJrqf0xCDINmuVCNrP9ZAWc8MB/PR+rWwZehkBDlIs8Qzf1JpnC 7IQrpTlyd5jozg/+FsvZr723o3teaVwhe57oDAqKQyueNP3w9IwA4TzftbRxg9pZU9VcDlwvnutKt jJ8Ln+/fVRYN6pAfk3euzoU9K6XwUMGaLnK+Lcrf07tIppWjCLSK+rnnoGZVbceA7fzC56WfkUXnK r1kzqn/A==; Received: from i7.infradead.org ([2001:8b0:10b:1:21e:67ff:fecb:7a92]) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kkzkK-0004KY-Jj; Fri, 04 Dec 2020 01:18:53 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1kkzkK-00CS9i-67; Fri, 04 Dec 2020 01:18:52 +0000 From: David Woodhouse To: kvm@vger.kernel.org Cc: Paolo Bonzini , Ankur Arora , Joao Martins , Boris Ostrovsky , Sean Christopherson Subject: [PATCH 00/15] KVM: Add Xen hypercall and shared info pages Date: Fri, 4 Dec 2020 01:18:33 +0000 Message-Id: <20201204011848.2967588-1-dwmw2@infradead.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Sender: David Woodhouse X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Reviving the first section (so far) of a patch set that Joao posted as RFC last year: https://lore.kernel.org/kvm/20190220201609.28290-1-joao.m.martins@oracle.com/ This adds basic hypercall interception support, and adds support for timekeeping and runstate-related shared info regions. I've updated and reworked the original a bit, including: • Support for 32-bit guests • 64-bit second support in wallclock • Time counters for runnable/blocked states in runstate support • Self-tests • Fixed Viridian coexistence • No new KVM_CAP_XEN_xxx, just more bits returned by KVM_CAP_XEN_HVM I'm about to do the event channel support, but this part stands alone and should be sufficient to get a fully functional Xen HVM guest running. David Woodhouse (6): KVM: Fix arguments to kvm_{un,}map_gfn() KVM: x86/xen: Fix coexistence of Xen and Hyper-V hypercalls KVM: x86/xen: latch long_mode when hypercall page is set up KVM: x86/xen: add definitions of compat_shared_info, compat_vcpu_info xen: add wc_sec_hi to struct shared_info KVM: x86: declare Xen HVM shared info capability and add test case Joao Martins (9): KVM: x86/xen: fix Xen hypercall page msr handling KVM: x86/xen: intercept xen hypercalls if enabled KVM: x86/xen: add KVM_XEN_HVM_SET_ATTR/KVM_XEN_HVM_GET_ATTR KVM: x86/xen: register shared_info page KVM: x86/xen: setup pvclock updates KVM: x86/xen: update wallclock region KVM: x86/xen: register vcpu info KVM: x86/xen: register vcpu time info region KVM: x86/xen: register runstate info arch/x86/include/asm/kvm_host.h | 23 + arch/x86/include/asm/xen/interface.h | 3 + arch/x86/kvm/Makefile | 2 +- arch/x86/kvm/hyperv.c | 40 +- arch/x86/kvm/trace.h | 36 ++ arch/x86/kvm/x86.c | 109 +++-- arch/x86/kvm/x86.h | 1 + arch/x86/kvm/xen.c | 544 +++++++++++++++++++++ arch/x86/kvm/xen.h | 83 ++++ include/linux/kvm_host.h | 34 +- include/uapi/linux/kvm.h | 47 ++ include/xen/interface/xen.h | 4 +- tools/testing/selftests/kvm/Makefile | 2 + tools/testing/selftests/kvm/lib/kvm_util.c | 1 + .../testing/selftests/kvm/x86_64/xen_shinfo_test.c | 187 +++++++ .../testing/selftests/kvm/x86_64/xen_vmcall_test.c | 150 ++++++ virt/kvm/kvm_main.c | 8 +- 17 files changed, 1201 insertions(+), 73 deletions(-) 32-bit guests, and fleshed out the runstate information a little more to add times for all of running, runnable, blocked states.