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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,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 152A7C4CEC9 for ; Wed, 18 Sep 2019 08:07:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EA77E20882 for ; Wed, 18 Sep 2019 08:07:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729487AbfIRIHb (ORCPT ); Wed, 18 Sep 2019 04:07:31 -0400 Received: from foss.arm.com ([217.140.110.172]:36748 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725298AbfIRIHb (ORCPT ); Wed, 18 Sep 2019 04:07:31 -0400 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 Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Steve.Capper@arm.com, Kaly.Xin@arm.com, justin.he@arm.com, jianyong.wu@arm.com, nd@arm.com, linux-arm-kernel@lists.infradead.org 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 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.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 -- 2.17.1