From: Elliot Berman <quic_eberman@quicinc.com> To: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Elliot Berman <quic_eberman@quicinc.com>, Murali Nalajala <quic_mnalajal@quicinc.com>, Trilok Soni <quic_tsoni@quicinc.com>, "Srivatsa Vaddagiri" <quic_svaddagi@quicinc.com>, Carl van Schaik <quic_cvanscha@quicinc.com>, Andy Gross <agross@kernel.org>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, <linux-arm-kernel@lists.infradead.org>, "Mark Rutland" <mark.rutland@arm.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Sudeep Holla <sudeep.holla@arm.com>, "Marc Zyngier" <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>, "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>, Jonathan Corbet <corbet@lwn.net>, Will Deacon <will@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>, <devicetree@vger.kernel.org>, <linux-doc@vger.kernel.org>, <linux-arm-msm@vger.kernel.org> Subject: [PATCH v3 00/12] Drivers for gunyah hypervisor Date: Thu, 11 Aug 2022 14:40:55 -0700 [thread overview] Message-ID: <20220811214107.1074343-1-quic_eberman@quicinc.com> (raw) 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. :: VM A VM B +-----+ +-----+ | +-----+ +-----+ +-----+ | | | | | | | | | | | 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. This series adds the basic framework for detecting that Linux is running under Gunyah as a virtual machine, communication with the Gunyah Resource Manager, and a tty driver to demonstrate end-to-end use case of communicating with RM. Presently, the TTY driver is only capable of behaving as a loopback device: data sent to ttyGH0 shows up in ttyGH1 and vice versa. More Gunyah consoles can be exposed as Linux learns about other VMs running in Gunyah. In a future series, I'll introduce a Gunyah VM loader which can load and run VMs. This loader will follow the design philosophy of the /dev/kvm. Changes in v3: - /Maintained/Supported/ in MAINTAINERS - Tidied up documentation throughout based on questions/feedback received - Moved hypercalls into arch/arm64/gunyah/; following hyper-v's implementation - Drop opaque typedefs - Move sysfs nodes under /sys/hypervisor/gunyah/ - Moved Gunyah console driver to drivers/tty/ - Reworked gunyah_device design to drop the Gunyah bus. Changes in v2: https://lore.kernel.org/all/20220801211240.597859-1-quic_eberman@quicinc.com/ - DT bindings clean up - Switch hypercalls to follow SMCCC v1: https://lore.kernel.org/all/20220223233729.1571114-1-quic_eberman@quicinc.com/ Elliot Berman (12): arm64: smccc: Include alternative-macros.h docs: gunyah: Introduce Gunyah Hypervisor dt-bindings: Add binding for gunyah hypervisor gunyah: Common types and error codes for Gunyah hypercalls virt: gunyah: Add hypercalls to identify Gunyah virt: gunyah: Add sysfs nodes gunyah: msgq: Add Gunyah message queues gunyah: sysfs: Add node to describe supported features gunyah: rsc_mgr: Add resource manager RPC core gunyah: rsc_mgr: Add RPC for console services gunyah: rsc_mgr: Add auxiliary devices for console tty: gunyah: Add tty console driver for RM Console Serivces .../ABI/testing/sysfs-hypervisor-gunyah | 38 ++ .../bindings/firmware/gunyah-hypervisor.yaml | 87 +++ Documentation/virt/gunyah/index.rst | 102 +++ Documentation/virt/gunyah/message-queue.rst | 52 ++ Documentation/virt/index.rst | 1 + MAINTAINERS | 14 + arch/arm64/Kbuild | 1 + arch/arm64/gunyah/Makefile | 2 + arch/arm64/gunyah/hypercall.c | 104 +++ drivers/tty/Kconfig | 9 + drivers/tty/Makefile | 1 + drivers/tty/gunyah_tty.c | 410 ++++++++++++ drivers/virt/Kconfig | 2 + drivers/virt/Makefile | 1 + drivers/virt/gunyah/Kconfig | 13 + drivers/virt/gunyah/Makefile | 3 + drivers/virt/gunyah/msgq.c | 192 ++++++ drivers/virt/gunyah/rsc_mgr.c | 630 ++++++++++++++++++ drivers/virt/gunyah/rsc_mgr.h | 56 ++ drivers/virt/gunyah/rsc_mgr_rpc.c | 151 +++++ drivers/virt/gunyah/sysfs.c | 102 +++ include/asm-generic/gunyah.h | 115 ++++ include/linux/arm-smccc.h | 1 + include/linux/gunyah.h | 71 ++ include/linux/gunyah_rsc_mgr.h | 42 ++ 25 files changed, 2200 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/gunyah/Makefile create mode 100644 arch/arm64/gunyah/hypercall.c create mode 100644 drivers/tty/gunyah_tty.c create mode 100644 drivers/virt/gunyah/Kconfig create mode 100644 drivers/virt/gunyah/Makefile 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_rpc.c create mode 100644 drivers/virt/gunyah/sysfs.c create mode 100644 include/asm-generic/gunyah.h create mode 100644 include/linux/gunyah.h create mode 100644 include/linux/gunyah_rsc_mgr.h base-commit: 3d7cb6b04c3f3115719235cc6866b10326de34cd -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Elliot Berman <quic_eberman@quicinc.com> To: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Elliot Berman <quic_eberman@quicinc.com>, Murali Nalajala <quic_mnalajal@quicinc.com>, Trilok Soni <quic_tsoni@quicinc.com>, "Srivatsa Vaddagiri" <quic_svaddagi@quicinc.com>, Carl van Schaik <quic_cvanscha@quicinc.com>, Andy Gross <agross@kernel.org>, Dmitry Baryshkov <dmitry.baryshkov@linaro.org>, <linux-arm-kernel@lists.infradead.org>, "Mark Rutland" <mark.rutland@arm.com>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Sudeep Holla <sudeep.holla@arm.com>, "Marc Zyngier" <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>, "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>, Jonathan Corbet <corbet@lwn.net>, Will Deacon <will@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>, <devicetree@vger.kernel.org>, <linux-doc@vger.kernel.org>, <linux-arm-msm@vger.kernel.org> Subject: [PATCH v3 00/12] Drivers for gunyah hypervisor Date: Thu, 11 Aug 2022 14:40:55 -0700 [thread overview] Message-ID: <20220811214107.1074343-1-quic_eberman@quicinc.com> (raw) 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. :: VM A VM B +-----+ +-----+ | +-----+ +-----+ +-----+ | | | | | | | | | | | 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. This series adds the basic framework for detecting that Linux is running under Gunyah as a virtual machine, communication with the Gunyah Resource Manager, and a tty driver to demonstrate end-to-end use case of communicating with RM. Presently, the TTY driver is only capable of behaving as a loopback device: data sent to ttyGH0 shows up in ttyGH1 and vice versa. More Gunyah consoles can be exposed as Linux learns about other VMs running in Gunyah. In a future series, I'll introduce a Gunyah VM loader which can load and run VMs. This loader will follow the design philosophy of the /dev/kvm. Changes in v3: - /Maintained/Supported/ in MAINTAINERS - Tidied up documentation throughout based on questions/feedback received - Moved hypercalls into arch/arm64/gunyah/; following hyper-v's implementation - Drop opaque typedefs - Move sysfs nodes under /sys/hypervisor/gunyah/ - Moved Gunyah console driver to drivers/tty/ - Reworked gunyah_device design to drop the Gunyah bus. Changes in v2: https://lore.kernel.org/all/20220801211240.597859-1-quic_eberman@quicinc.com/ - DT bindings clean up - Switch hypercalls to follow SMCCC v1: https://lore.kernel.org/all/20220223233729.1571114-1-quic_eberman@quicinc.com/ Elliot Berman (12): arm64: smccc: Include alternative-macros.h docs: gunyah: Introduce Gunyah Hypervisor dt-bindings: Add binding for gunyah hypervisor gunyah: Common types and error codes for Gunyah hypercalls virt: gunyah: Add hypercalls to identify Gunyah virt: gunyah: Add sysfs nodes gunyah: msgq: Add Gunyah message queues gunyah: sysfs: Add node to describe supported features gunyah: rsc_mgr: Add resource manager RPC core gunyah: rsc_mgr: Add RPC for console services gunyah: rsc_mgr: Add auxiliary devices for console tty: gunyah: Add tty console driver for RM Console Serivces .../ABI/testing/sysfs-hypervisor-gunyah | 38 ++ .../bindings/firmware/gunyah-hypervisor.yaml | 87 +++ Documentation/virt/gunyah/index.rst | 102 +++ Documentation/virt/gunyah/message-queue.rst | 52 ++ Documentation/virt/index.rst | 1 + MAINTAINERS | 14 + arch/arm64/Kbuild | 1 + arch/arm64/gunyah/Makefile | 2 + arch/arm64/gunyah/hypercall.c | 104 +++ drivers/tty/Kconfig | 9 + drivers/tty/Makefile | 1 + drivers/tty/gunyah_tty.c | 410 ++++++++++++ drivers/virt/Kconfig | 2 + drivers/virt/Makefile | 1 + drivers/virt/gunyah/Kconfig | 13 + drivers/virt/gunyah/Makefile | 3 + drivers/virt/gunyah/msgq.c | 192 ++++++ drivers/virt/gunyah/rsc_mgr.c | 630 ++++++++++++++++++ drivers/virt/gunyah/rsc_mgr.h | 56 ++ drivers/virt/gunyah/rsc_mgr_rpc.c | 151 +++++ drivers/virt/gunyah/sysfs.c | 102 +++ include/asm-generic/gunyah.h | 115 ++++ include/linux/arm-smccc.h | 1 + include/linux/gunyah.h | 71 ++ include/linux/gunyah_rsc_mgr.h | 42 ++ 25 files changed, 2200 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/gunyah/Makefile create mode 100644 arch/arm64/gunyah/hypercall.c create mode 100644 drivers/tty/gunyah_tty.c create mode 100644 drivers/virt/gunyah/Kconfig create mode 100644 drivers/virt/gunyah/Makefile 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_rpc.c create mode 100644 drivers/virt/gunyah/sysfs.c create mode 100644 include/asm-generic/gunyah.h create mode 100644 include/linux/gunyah.h create mode 100644 include/linux/gunyah_rsc_mgr.h base-commit: 3d7cb6b04c3f3115719235cc6866b10326de34cd -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2022-08-11 21:46 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-08-11 21:40 Elliot Berman [this message] 2022-08-11 21:40 ` [PATCH v3 00/12] Drivers for gunyah hypervisor Elliot Berman 2022-08-11 21:40 ` [PATCH v3 01/12] arm64: smccc: Include alternative-macros.h Elliot Berman 2022-08-11 21:40 ` Elliot Berman 2022-08-11 21:40 ` [PATCH v3 02/12] docs: gunyah: Introduce Gunyah Hypervisor Elliot Berman 2022-08-11 21:40 ` Elliot Berman 2022-08-12 8:25 ` Bagas Sanjaya 2022-08-12 8:25 ` Bagas Sanjaya 2022-08-11 21:40 ` [PATCH v3 03/12] dt-bindings: Add binding for gunyah hypervisor Elliot Berman 2022-08-11 21:40 ` Elliot Berman 2022-08-12 15:13 ` Rob Herring 2022-08-12 15:13 ` Rob Herring 2022-08-11 21:40 ` [PATCH v3 04/12] gunyah: Common types and error codes for Gunyah hypercalls Elliot Berman 2022-08-11 21:40 ` Elliot Berman 2022-08-11 21:41 ` [PATCH v3 05/12] virt: gunyah: Add hypercalls to identify Gunyah Elliot Berman 2022-08-11 21:41 ` Elliot Berman 2022-08-11 21:41 ` [PATCH v3 06/12] virt: gunyah: Add sysfs nodes Elliot Berman 2022-08-11 21:41 ` Elliot Berman 2022-08-23 8:06 ` Dmitry Baryshkov 2022-08-23 8:06 ` Dmitry Baryshkov 2022-08-11 21:41 ` [PATCH v3 07/12] gunyah: msgq: Add Gunyah message queues Elliot Berman 2022-08-11 21:41 ` Elliot Berman 2022-08-11 21:41 ` [PATCH v3 08/12] gunyah: sysfs: Add node to describe supported features Elliot Berman 2022-08-11 21:41 ` Elliot Berman 2022-08-11 21:41 ` [PATCH v3 09/12] gunyah: rsc_mgr: Add resource manager RPC core Elliot Berman 2022-08-11 21:41 ` Elliot Berman 2022-08-11 21:41 ` [PATCH v3 10/12] gunyah: rsc_mgr: Add RPC for console services Elliot Berman 2022-08-11 21:41 ` Elliot Berman 2022-08-11 21:41 ` [PATCH v3 11/12] gunyah: rsc_mgr: Add auxiliary devices for console Elliot Berman 2022-08-11 21:41 ` Elliot Berman 2022-08-11 21:41 ` [PATCH v3 12/12] tty: gunyah: Add tty console driver for RM Console Serivces Elliot Berman 2022-08-11 21:41 ` Elliot Berman
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