From patchwork Fri Aug 6 10:07:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hikaru Nishida X-Patchwork-Id: 12423129 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=-14.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, 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=unavailable 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 92D2CC4320A for ; Fri, 6 Aug 2021 10:07:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7CD3660F38 for ; Fri, 6 Aug 2021 10:07:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244807AbhHFKHu (ORCPT ); Fri, 6 Aug 2021 06:07:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54506 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244841AbhHFKHt (ORCPT ); Fri, 6 Aug 2021 06:07:49 -0400 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E3422C061798 for ; Fri, 6 Aug 2021 03:07:33 -0700 (PDT) Received: by mail-pl1-x629.google.com with SMTP id u16so6439328ple.2 for ; Fri, 06 Aug 2021 03:07:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=x6feBf9HHFfTJo5VBeJadJAVn2sLzP1PBAkuOCFqAFQ=; b=O9w1LNgNGb8Oa24qAxBilCSvkVEcE9Ej9r2ANCue0ou4JfMF8ytKrogiWfKn1IdXW4 /QyzIU3e9K0wdlVIdJVK9ysvFjopgir7+VRpkh9rZqO3DPoC8cSsskb3xkKyrqf4uU9Q p0+iMGAeZa5/5L9RDamJFqg0uAKCVe+flj0Qo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=x6feBf9HHFfTJo5VBeJadJAVn2sLzP1PBAkuOCFqAFQ=; b=AhF1/ZdCmc6XJTyurripTMdMGs6/0+db2J2Ep1vDA3ZIiW0+2QOx9tY5RfA4eNeUCT B1mioW3lb5w1FugmZiUkNC6gfeY18xJ7Hi4sMeVnyoiS2C3JmlgzVwZzJvOhHT5ShFmE Z68pwyufVmSe5puh0beDr2h+e1XU+26h1SsEu/haKjgzbpT/Fqt2hZWH1kAYERAtUgK5 7g3k6HMZjvJbAUTgMTwUENmlqzZ1zBWXiSHo+H5HMMshOSLPaXzU9nmCoEQLQ6M3V6sm e8kfKWSS9XLsvlWKWiyqd9LGqFzAWYof+AGnRIZXzlRtZBYG5So2hvYjHONGrm4v0Jt6 84jw== X-Gm-Message-State: AOAM533kCoH3qNfZpAjSoHPnRcogFRShAcYoT3x6mTGbBEb3IIKIqBFy Yj6zBgMZo9eXHQ5tzHVYIxpvEg== X-Google-Smtp-Source: ABdhPJyojKdf1A1mhaHwoS2sCbrTfC4tzRJhWfp4CTlAn1AbaMHcr7ba9JApUobqvx0Sm3+olsVflw== X-Received: by 2002:a05:6a00:c81:b029:30e:21bf:4c15 with SMTP id a1-20020a056a000c81b029030e21bf4c15mr9975980pfv.70.1628244453447; Fri, 06 Aug 2021 03:07:33 -0700 (PDT) Received: from localhost ([2401:fa00:8f:203:b731:9e91:71e2:65e7]) by smtp.gmail.com with UTF8SMTPSA id r14sm2394630pff.106.2021.08.06.03.07.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 06 Aug 2021 03:07:32 -0700 (PDT) From: Hikaru Nishida To: linux-kernel@vger.kernel.org, dme@dme.org, tglx@linutronix.de, mlevitsk@redhat.com Cc: suleiman@google.com, Hikaru Nishida , Andy Lutomirski , Borislav Petkov , "H. Peter Anvin" , Ingo Molnar , Jim Mattson , Joerg Roedel , John Stultz , Jonathan Corbet , Juergen Gross , Lai Jiangshan , Mike Travis , Paolo Bonzini , "Peter Zijlstra (Intel)" , Sean Christopherson , Stephen Boyd , Steve Wahl , Tom Lendacky , Vitaly Kuznetsov , Wanpeng Li , kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org Subject: [v2 PATCH 0/4] x86/kvm: Virtual suspend time injection support Date: Fri, 6 Aug 2021 19:07:06 +0900 Message-Id: <20210806100710.2425336-1-hikalium@chromium.org> X-Mailer: git-send-email 2.32.0.605.g8dce9f2422-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Hi, This patch series adds virtual suspend time injection support to KVM. (It is an updated version of the following series.) https://lore.kernel.org/kvm/20210426090644.2218834-1-hikalium@chromium.org/ Changes to v1: - Using IRQ instead of polling to detect the host's suspension. - Removed unused arg "updated" from kvm_write_suspend_time() - Improved comments and commit messages. Please take a look again. Thanks, Hikaru Nishida Hikaru Nishida (4): x86/kvm: Reserve KVM_FEATURE_HOST_SUSPEND_TIME and MSR_KVM_HOST_SUSPEND_TIME x86/kvm: Add definitions for virtual suspend time injection x86/kvm: Add host side support for virtual suspend time injection x86/kvm: Add guest side support for virtual suspend time injection Documentation/virt/kvm/cpuid.rst | 3 + Documentation/virt/kvm/msr.rst | 30 ++++++++ arch/x86/Kconfig | 13 ++++ arch/x86/include/asm/idtentry.h | 4 + arch/x86/include/asm/irq_vectors.h | 7 +- arch/x86/include/asm/kvm_host.h | 5 ++ arch/x86/include/asm/kvm_para.h | 9 +++ arch/x86/include/uapi/asm/kvm_para.h | 6 ++ arch/x86/kernel/kvmclock.c | 40 ++++++++++ arch/x86/kvm/Kconfig | 13 ++++ arch/x86/kvm/cpuid.c | 4 + arch/x86/kvm/x86.c | 109 ++++++++++++++++++++++++++- include/linux/kvm_host.h | 8 ++ include/linux/timekeeper_internal.h | 4 + kernel/time/timekeeping.c | 37 +++++++++ 15 files changed, 290 insertions(+), 2 deletions(-)