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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 997D8C32753 for ; Fri, 2 Aug 2019 14:50:42 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7053C217D7 for ; Fri, 2 Aug 2019 14:50:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="p9xassbc" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7053C217D7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=+6vDp69ayABJjWyty+PDQyK0p4E9vnsjGf0ZTCun2xw=; b=p9xassbcj3oUHJ PRQtfsthL7QVrh3gX1lvFzt9x2Sa51etnJojoDZ2aypJU06erHZeRcTVVcElBAfDbu2FBr/f/cfAE z1JqpQ6JEONUp58gwVjUivl+Ywkj/kFkURqcmxSsMZ9j5y2cAJbrwjwdf7LYaQvJf3FeR8BKz3lF4 OsQAUND+n7bK5GvCaP0hBqFVFatyIvcZQ6O7zYRTRkanI3pGNrS5z9/ak5YTKFqcLom2xC/9ENf5v 7uiw3menneUpo/h4dpFRd1GF07+n02s0XSNk456oqsPX2iiMruXqbjzuZjBzi3MkJ/dMMoDJJ/chX D+7agU6hzYA42iX/IMFQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1htYt9-0002nE-Go; Fri, 02 Aug 2019 14:50:35 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1htYt6-0002mU-1Q for linux-arm-kernel@lists.infradead.org; Fri, 02 Aug 2019 14:50:33 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C9FD11596; Fri, 2 Aug 2019 07:50:29 -0700 (PDT) Received: from e112269-lin.arm.com (e112269-lin.cambridge.arm.com [10.1.196.133]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E2E0B3F575; Fri, 2 Aug 2019 07:50:27 -0700 (PDT) From: Steven Price To: Subject: [PATCH 0/9] arm64: Stolen time support Date: Fri, 2 Aug 2019 15:50:08 +0100 Message-Id: <20190802145017.42543-1-steven.price@arm.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190802_075032_173822_3C5B0554 X-CRM114-Status: GOOD ( 10.69 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= , Catalin Marinas , Suzuki K Pouloze , linux-doc@vger.kernel.org, Russell King , Steven Price , James Morse , linux-arm-kernel@lists.infradead.org, Marc Zyngier , Paolo Bonzini , Will Deacon , kvmarm@lists.cs.columbia.edu, Julien Thierry Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org This series add support for paravirtualized time for arm64 guests and KVM hosts following the specification in Arm's document DEN 0057A: https://developer.arm.com/docs/den0057/a It implements support for stolen time, allowing the guest to identify time when it is forcibly not executing. It doesn't implement support for Live Physical Time (LPT) as there are some concerns about the overheads and approach in the above specification, and I expect an updated version of the specification to be released soon with just the stolen time parts. I previously posted a series including LPT (as well as stolen time): https://lore.kernel.org/kvmarm/20181212150226.38051-1-steven.price@arm.com/ Patches 2, 5, 7 and 8 are cleanup patches and could be taken separately. Christoffer Dall (1): KVM: arm/arm64: Factor out hypercall handling from PSCI code Steven Price (8): KVM: arm64: Document PV-time interface KVM: arm64: Implement PV_FEATURES call KVM: arm64: Support stolen time reporting via shared structure KVM: Allow kvm_device_ops to be const KVM: arm64: Provide a PV_TIME device to user space arm/arm64: Provide a wrapper for SMCCC 1.1 calls arm/arm64: Make use of the SMCCC 1.1 wrapper arm64: Retrieve stolen time as paravirtualized guest Documentation/virtual/kvm/arm/pvtime.txt | 107 +++++++++++++ arch/arm/kvm/Makefile | 2 +- arch/arm/kvm/handle_exit.c | 2 +- arch/arm/mm/proc-v7-bugs.c | 13 +- arch/arm64/include/asm/kvm_host.h | 13 +- arch/arm64/include/asm/kvm_mmu.h | 2 + arch/arm64/include/asm/pvclock-abi.h | 20 +++ arch/arm64/include/uapi/asm/kvm.h | 6 + arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/cpu_errata.c | 80 ++++------ arch/arm64/kernel/kvm.c | 155 ++++++++++++++++++ arch/arm64/kvm/Kconfig | 1 + arch/arm64/kvm/Makefile | 2 + arch/arm64/kvm/handle_exit.c | 4 +- include/kvm/arm_hypercalls.h | 44 ++++++ include/kvm/arm_psci.h | 2 +- include/linux/arm-smccc.h | 58 +++++++ include/linux/cpuhotplug.h | 1 + include/linux/kvm_host.h | 4 +- include/linux/kvm_types.h | 2 + include/uapi/linux/kvm.h | 2 + virt/kvm/arm/arm.c | 18 +++ virt/kvm/arm/hypercalls.c | 138 ++++++++++++++++ virt/kvm/arm/mmu.c | 44 ++++++ virt/kvm/arm/psci.c | 84 +--------- virt/kvm/arm/pvtime.c | 190 +++++++++++++++++++++++ virt/kvm/kvm_main.c | 6 +- 27 files changed, 848 insertions(+), 153 deletions(-) create mode 100644 Documentation/virtual/kvm/arm/pvtime.txt create mode 100644 arch/arm64/include/asm/pvclock-abi.h create mode 100644 arch/arm64/kernel/kvm.c create mode 100644 include/kvm/arm_hypercalls.h create mode 100644 virt/kvm/arm/hypercalls.c create mode 100644 virt/kvm/arm/pvtime.c -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel