From patchwork Mon Aug 1 21:12:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 594743 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51A91C3F6B0 for ; Mon, 1 Aug 2022 21:13:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234706AbiHAVN6 (ORCPT ); Mon, 1 Aug 2022 17:13:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232288AbiHAVN5 (ORCPT ); Mon, 1 Aug 2022 17:13:57 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B78C317E09; Mon, 1 Aug 2022 14:13:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1659388436; x=1690924436; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=7/tWAflxyqIo678fOHVIkwOsMaWGqaeFe9w4NSliGMs=; b=f13btQkwxC9HuCsiqHS0B6r2hSpPaNGroQIIiZH72EfkYdIq51YkMPNJ wcoYCP9kW1xeqHd66WycVofxbXmS535XiHa5IT09O+8xZmX04bNWQyQ/L jQHWbPVrDx+Brq/JbbUGCVnzMtA2o/qx8WPjpoYXq1RdOL+Ju+lYLBUui A=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-01.qualcomm.com with ESMTP; 01 Aug 2022 14:13:56 -0700 X-QCInternal: smtphost Received: from nasanex01b.na.qualcomm.com ([10.46.141.250]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Aug 2022 14:13:55 -0700 Received: from hu-eberman-lv.qualcomm.com (10.49.16.6) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 1 Aug 2022 14:13:54 -0700 From: Elliot Berman To: Bjorn Andersson CC: Elliot Berman , Murali Nalajala , Trilok Soni , "Srivatsa Vaddagiri" , Carl van Schaik , Andy Gross , , Lorenzo Pieralisi , Sudeep Holla , "Marc Zyngier" , Rob Herring , "Krzysztof Kozlowski" , Jonathan Corbet , Will Deacon , Catalin Marinas , , , Subject: [PATCH v2 00/11] Drivers for gunyah hypervisor Date: Mon, 1 Aug 2022 14:12:29 -0700 Message-ID: <20220801211240.597859-1-quic_eberman@quicinc.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nasanex01b.na.qualcomm.com (10.46.141.250) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Gunyah is a Type-1 hypervisor independent of any high-level OS kernel, and runs in a higher CPU privilege level. It does not depend on any lower-privileged OS kernel/code for its core functionality. This increases its security and can support a much smaller trusted computing base than a Type-2 hypervisor. Gunyah is an open source hypervisor. The source repo is available at https://github.com/quic/gunyah-hypervisor. The diagram below shows the architecture. :: Primary VM Secondary VMs +-----+ +-----+ | +-----+ +-----+ +-----+ | | | | | | | | | | | EL0 | APP | | APP | | | APP | | APP | | APP | | | | | | | | | | | | +-----+ +-----+ | +-----+ +-----+ +-----+ ---------------------|------------------------- +--------------+ | +----------------------+ | | | | | EL1 | Linux Kernel | | |Linux kernel/Other OS | ... | | | | | +--------------+ | +----------------------+ --------hvc/smc------|------hvc/smc------------ +----------------------------------------+ | | EL2 | Gunyah Hypervisor | | | +----------------------------------------+ Gunyah provides these following features. - Threads and Scheduling: The scheduler schedules virtual CPUs (VCPUs) on physical CPUs and enables time-sharing of the CPUs. - Memory Management: Gunyah tracks memory ownership and use of all memory under its control. Memory partitioning between VMs is a fundamental security feature. - Interrupt Virtualization: All interrupts are handled in the hypervisor and routed to the assigned VM. - Inter-VM Communication: There are several different mechanisms provided for communicating between VMs. - Device Virtualization: Para-virtualization of devices is supported using inter-VM communication. Low level system features and devices such as interrupt controllers are supported with emulation where required. Elliot Berman (11): docs: gunyah: Introduce Gunyah Hypervisor dt-bindings: Add binding for gunyah hypervisor arm64: gunyah: Add Gunyah hypercalls ABI gunyah: Common types and error codes for Gunyah hypercalls virt: gunyah: Add sysfs nodes virt: gunyah: Add capabilities bus and devices gunyah: msgq: Add Gunyah message queues gunyah: rsc_mgr: Add resource manager RPC core gunyah: rsc_mgr: Add auxiliary devices for console gunyah: rsc_mgr: Add RPC for console services gunyah: Add tty console driver for RM Console Serivces .../ABI/testing/sysfs-hypervisor-gunyah | 37 + .../bindings/firmware/gunyah-hypervisor.yaml | 84 +++ Documentation/virt/gunyah/index.rst | 99 +++ Documentation/virt/gunyah/message-queue.rst | 52 ++ Documentation/virt/index.rst | 1 + MAINTAINERS | 12 + arch/arm64/include/asm/gunyah.h | 142 ++++ drivers/virt/Kconfig | 1 + drivers/virt/Makefile | 1 + drivers/virt/gunyah/Kconfig | 24 + drivers/virt/gunyah/Makefile | 8 + drivers/virt/gunyah/device.c | 108 +++ drivers/virt/gunyah/gunyah_private.h | 18 + drivers/virt/gunyah/msgq.c | 223 ++++++ drivers/virt/gunyah/rsc_mgr.c | 682 ++++++++++++++++++ drivers/virt/gunyah/rsc_mgr.h | 56 ++ drivers/virt/gunyah/rsc_mgr_console.c | 405 +++++++++++ drivers/virt/gunyah/rsc_mgr_rpc.c | 151 ++++ drivers/virt/gunyah/sysfs.c | 176 +++++ include/linux/gunyah.h | 133 ++++ include/linux/gunyah_rsc_mgr.h | 45 ++ 21 files changed, 2458 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-hypervisor-gunyah create mode 100644 Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml create mode 100644 Documentation/virt/gunyah/index.rst create mode 100644 Documentation/virt/gunyah/message-queue.rst create mode 100644 arch/arm64/include/asm/gunyah.h create mode 100644 drivers/virt/gunyah/Kconfig create mode 100644 drivers/virt/gunyah/Makefile create mode 100644 drivers/virt/gunyah/device.c create mode 100644 drivers/virt/gunyah/gunyah_private.h create mode 100644 drivers/virt/gunyah/msgq.c create mode 100644 drivers/virt/gunyah/rsc_mgr.c create mode 100644 drivers/virt/gunyah/rsc_mgr.h create mode 100644 drivers/virt/gunyah/rsc_mgr_console.c create mode 100644 drivers/virt/gunyah/rsc_mgr_rpc.c create mode 100644 drivers/virt/gunyah/sysfs.c create mode 100644 include/linux/gunyah.h create mode 100644 include/linux/gunyah_rsc_mgr.h