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: 12934049 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2E357C00144 for ; Mon, 1 Aug 2022 21:15:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC :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=4kXChMVByZE6jtmWSCW2oTZ7LpXwgQGp5UsHkS1evjI=; b=OwxyZYYCB+1iD9 YAW0MsP7IbaY6kur8DiuNrau7a7F4cFJ7Pwi428pfkhNW/4aA5VcEiZTcIgBQZWYAGxFIjzFnYNhB XkwFJkQypWZ8IT1vl2FmaMebCR31eB2f3YiHEI07yHk8tbxMcQfdb9T7AcxUyjLE26RQ4Q3kjFloc +drh9xpqG3Jk0mAqrE+TRAOXQvcaTGaXU+nqY+cxt7PVhvPcjh4E+WerW8BQWpix5jo7Ti7WerBYI 0kL2Qq+1ezrakytnZ1mZrIwFu8m6Q85fhAqiocFSVZh2V8LyR8on4vsD5UDFmiMfHXPgzApFBcwCD imKuvkOkPxxZJv+ELcsQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oIcjl-00AhDl-53; Mon, 01 Aug 2022 21:14:05 +0000 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oIcjh-00Ah6P-KU for linux-arm-kernel@lists.infradead.org; Mon, 01 Aug 2022 21:14:03 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1659388441; x=1690924441; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=7/tWAflxyqIo678fOHVIkwOsMaWGqaeFe9w4NSliGMs=; b=yCl7lcXj31Ps8CcqaZ8M9b6BjeEXG2rcqfFs2Mu3+1rzmJrN7ykPpt7Y tPsUz7bpOhSZnVWuRjdrySqGjqxYwMMikKFTKScb9eY15BNiA7jGlmvDI x9SrEVQWYixgN+8b2aiGrPTLODoAzxYj6KQJLYlT7X6e+oyP4FJzPI76K k=; 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) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220801_141401_734245_14EFB0AD X-CRM114-Status: GOOD ( 13.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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