From patchwork Wed Sep 18 08:07:10 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jianyong Wu X-Patchwork-Id: 11149817 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1D49C14E5 for ; Wed, 18 Sep 2019 08:07:40 +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 EF7D721D6C for ; Wed, 18 Sep 2019 08:07:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="dvwK6ZNS" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EF7D721D6C 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+patchwork-linux-arm=patchwork.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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=0wL8ImaRKElHXqpu87RXUpec+xT5b1YFAQSSFjyg9LA=; b=dvw K6ZNSeXk+uUYb29mRlb+6EdBc0jWncuHJ9k9SqB33ejum/e7gTtIuI5BLVlu5Nt7onYyTnOxmsJ9M 8W7emYR9DVQzSTLTSAhDHUiZk+bnkA7cUGkvKTnpRlOJViKVGRMLPh7GtUo7e6wvFSMaq+poSNl2P nOpAxYpgeuK9D9zKJ0rvCrjbYVlQzXVfrpT6xkb2k7faoIUwFdOSp27njuzz0gEujubMpA7gxzmO/ cZZ0i9h9PbsKgjtVZ35aM90Hn97RBUSsNoIi9YA8kNHgF8gXbiX8rckirKsSSik8XTeFMW7JNndlE +HjU4ZH6DLZ1abOWQNXLozYsRgvl0cg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iAUzy-000309-IT; Wed, 18 Sep 2019 08:07:38 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iAUzr-0002lT-Ml for linux-arm-kernel@lists.infradead.org; Wed, 18 Sep 2019 08:07:35 +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 AD95828; Wed, 18 Sep 2019 01:07:30 -0700 (PDT) Received: from entos-d05.shanghai.arm.com (entos-d05.shanghai.arm.com [10.169.40.35]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 8EAE63F59C; Wed, 18 Sep 2019 01:07:25 -0700 (PDT) From: Jianyong Wu To: netdev@vger.kernel.org, yangbo.lu@nxp.com, john.stultz@linaro.org, tglx@linutronix.de, pbonzini@redhat.com, sean.j.christopherson@intel.com, maz@kernel.org, richardcochran@gmail.com, Mark.Rutland@arm.com, Will.Deacon@arm.com, suzuki.poulose@arm.com Subject: [RFC PATCH v3 0/6] Enable ptp_kvm for arm64 Date: Wed, 18 Sep 2019 04:07:10 -0400 Message-Id: <20190918080716.64242-1-jianyong.wu@arm.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190918_010732_630320_CFD0E1C6 X-CRM114-Status: UNSURE ( 9.77 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 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: justin.he@arm.com, kvm@vger.kernel.org, Steve.Capper@arm.com, jianyong.wu@arm.com, linux-kernel@vger.kernel.org, Kaly.Xin@arm.com, nd@arm.com, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org kvm ptp targets to provide high precision time sync between guest and host in virtualization environment. This patch enable kvm ptp for arm64. This patch set base on [1][2][3] change log: from v2 to v3: (1) fix some issues in commit log. (2) add some receivers in send list. from v1 to v2: (1) move arch-specific code from arch/ to driver/ptp/ (2) offer mechanism to inform userspace if ptp_kvm service is available. (3) separate ptp_kvm code for arm64 into hypervisor part and guest part. (4) add API to expose monotonic clock and counter value. (5) refine code: remove no necessary part and reconsitution. [1]https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/ commit/?h=kvm/hvc&id=125ea89e4a21e2fc5235410f966a996a1a7148bf [2]https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/ commit/?h=kvm/hvc&id=464f5a1741e5959c3e4d2be1966ae0093b4dce06 [3]https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git/ commit/?h=kvm/hvc&id=6597490e005d0eeca8ed8c1c1d7b4318ee014681 Jianyong Wu (6): psci: Export psci_ops.conduit symbol as modules will use it. ptp: Reorganize ptp_kvm modules to make it arch-independent. timekeeping: Expose API allowing retrival of current clocksource and counter value psci: Add hvc call service for ptp_kvm. ptp: arm64: Enable ptp_kvm for arm64 kvm: arm64: Add capability check extension for ptp_kvm drivers/firmware/psci/psci.c | 6 ++ drivers/ptp/Kconfig | 2 +- drivers/ptp/Makefile | 1 + drivers/ptp/{ptp_kvm.c => kvm_ptp.c} | 77 ++++++------------------ drivers/ptp/ptp_kvm_arm64.c | 82 ++++++++++++++++++++++++++ drivers/ptp/ptp_kvm_x86.c | 87 ++++++++++++++++++++++++++++ include/asm-generic/ptp_kvm.h | 12 ++++ include/linux/arm-smccc.h | 14 ++++- include/linux/psci.h | 1 + include/linux/timekeeping.h | 3 + include/uapi/linux/kvm.h | 1 + kernel/time/timekeeping.c | 13 +++++ virt/kvm/arm/arm.c | 1 + virt/kvm/arm/psci.c | 17 ++++++ 14 files changed, 256 insertions(+), 61 deletions(-) rename drivers/ptp/{ptp_kvm.c => kvm_ptp.c} (63%) create mode 100644 drivers/ptp/ptp_kvm_arm64.c create mode 100644 drivers/ptp/ptp_kvm_x86.c create mode 100644 include/asm-generic/ptp_kvm.h