From patchwork Fri Sep 27 09:00:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 11164095 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 574D314DB for ; Fri, 27 Sep 2019 09:02:19 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 3C653217D7 for ; Fri, 27 Sep 2019 09:02:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3C653217D7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iDm7R-0005Kl-F1; Fri, 27 Sep 2019 09:00:53 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iDm7Q-0005K5-DF for xen-devel@lists.xenproject.org; Fri, 27 Sep 2019 09:00:52 +0000 X-Inumbo-ID: 4e199112-e105-11e9-bf31-bc764e2007e4 Received: from mx1.suse.de (unknown [195.135.220.15]) by localhost (Halon) with ESMTPS id 4e199112-e105-11e9-bf31-bc764e2007e4; Fri, 27 Sep 2019 09:00:51 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id E5656AFA9; Fri, 27 Sep 2019 09:00:50 +0000 (UTC) From: Juergen Gross To: xen-devel@lists.xenproject.org Date: Fri, 27 Sep 2019 11:00:42 +0200 Message-Id: <20190927090048.28872-1-jgross@suse.com> X-Mailer: git-send-email 2.16.4 Subject: [Xen-devel] [PATCH v1 0/6] Add hypervisor sysfs-like support X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Juergen Gross , Stefano Stabellini , Wei Liu , Konrad Rzeszutek Wilk , George Dunlap , Andrew Cooper , Ian Jackson , Tim Deegan , Julien Grall , Jan Beulich , Volodymyr Babchuk , =?utf-8?q?Roger_Pau_Monn?= =?utf-8?q?=C3=A9?= MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" On the 2019 Xen developer summit there was agreement that the Xen hypervisor should gain support for a hierarchical name-value store similar to the Linux kernel's sysfs. This is a first implementation of that idea adding the basic functionality to hypervisor and tools side. The interface to any user program making use of that "xen-hypfs" is a new library "libxenhypfs" with a stable interface. Changes in V1: - renamed xenfs ->xenhypfs - added writable entries support at the interface level and in the xenhypfs tool - added runtime parameter read access (integer type only for now) - added docs/misc/hypfs-paths.pandoc for path descriptions Juergen Gross (6): docs: add feature document for Xen hypervisor sysfs-like support xen: add basic hypervisor filesystem support libs: add libxenhypfs tools: add xenfs tool xen: add /buildinfo/config entry to hypervisor filesystem xen: add runtime parameter reading support to hypfs .gitignore | 3 + docs/features/hypervisorfs.pandoc | 119 +++++++++++++ docs/misc/hypfs-paths.pandoc | 70 ++++++++ tools/Rules.mk | 6 + tools/libs/Makefile | 1 + tools/libs/hypfs/Makefile | 14 ++ tools/libs/hypfs/core.c | 252 +++++++++++++++++++++++++++ tools/libs/hypfs/include/xenhypfs.h | 60 +++++++ tools/libs/hypfs/libxenhypfs.map | 9 + tools/libs/hypfs/xenhypfs.pc.in | 10 ++ tools/misc/Makefile | 6 + tools/misc/xenhypfs.c | 120 +++++++++++++ xen/arch/arm/traps.c | 1 + xen/arch/x86/hvm/hypercall.c | 1 + xen/arch/x86/hypercall.c | 1 + xen/arch/x86/pv/hypercall.c | 1 + xen/common/Makefile | 10 ++ xen/common/hypfs.c | 331 ++++++++++++++++++++++++++++++++++++ xen/common/kernel.c | 27 +++ xen/include/public/errno.h | 1 + xen/include/public/hypfs.h | 123 ++++++++++++++ xen/include/public/xen.h | 1 + xen/include/xen/hypercall.h | 8 + xen/include/xen/hypfs.h | 40 +++++ xen/include/xen/kernel.h | 2 + xen/tools/Makefile | 9 +- xen/tools/bin2c.c | 28 +++ 27 files changed, 1252 insertions(+), 2 deletions(-) create mode 100644 docs/features/hypervisorfs.pandoc create mode 100644 docs/misc/hypfs-paths.pandoc create mode 100644 tools/libs/hypfs/Makefile create mode 100644 tools/libs/hypfs/core.c create mode 100644 tools/libs/hypfs/include/xenhypfs.h create mode 100644 tools/libs/hypfs/libxenhypfs.map create mode 100644 tools/libs/hypfs/xenhypfs.pc.in create mode 100644 tools/misc/xenhypfs.c create mode 100644 xen/common/hypfs.c create mode 100644 xen/include/public/hypfs.h create mode 100644 xen/include/xen/hypfs.h create mode 100644 xen/tools/bin2c.c