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    Subject[PATCH v2 00/11] Gunyah Hypervisor drivers
    Date

    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 Type-2 hypervisors. This series adds the initial
    support for Gunyah hypercalls, IPC via message queues, communication with the
    Gunyah Resource Manager to enable Gunyah's paravirtualized console.

    Gunyah is an open source hypervisor. The source repo is available at
    https://github.com/quic/gunyah-hypervisor.

    This series enables guest awareness of Gunyah and establishes the basic
    architecture of Gunyah capabilities in the Linux kernel. As an end-to-end
    use case, a TTY driver for the Gunyah-based console is added which can demonstrate
    communication with the resource manager. In a future series, we intend to add
    support for loading secondary VMs.

    To self-test the console driver without other VMs, reads and writes to
    /dev/ttyGH0 will be sent to /dev/ttyGH1 via the hypervisor. In a system with
    multiple VMs, a secondary VM could use ttyGH0 as its boot console.
    The primary VM would be able to access that secondary VM's console via a ttyGHx.

    Changes in v2:
    - DT bindings clean up
    - Switch hypercalls to follow SMCCC

    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

    --
    2.25.1

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