linux-kernel - Re: [PATCH v7 02/20] dt-bindings: Add binding for gunyah hypervisor

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Message-ID: <167026934327.2470835.18397895386816332012.robh@kernel.org>
Date:   Mon, 5 Dec 2022 13:42:24 -0600
From:   Rob Herring <robh@...nel.org>
To:     Elliot Berman <quic_eberman@...cinc.com>
Cc:     Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-acpi@...r.kernel.org,
        Bjorn Andersson <quic_bjorande@...cinc.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Murali Nalajala <quic_mnalajal@...cinc.com>,
        devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
        Srivatsa Vaddagiri <quic_svaddagi@...cinc.com>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Prakruthi Deepak Heragu <quic_pheragu@...cinc.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Carl van Schaik <quic_cvanscha@...cinc.com>
Subject: Re: [PATCH v7 02/20] dt-bindings: Add binding for gunyah hypervisor


On Mon, 21 Nov 2022 05:59:51 -0800, Elliot Berman wrote:
> When Linux is booted as a guest under the Gunyah hypervisor, the Gunyah
> Resource Manager applies a devicetree overlay describing the virtual
> platform configuration of the guest VM, such as the message queue
> capability IDs for communicating with the Resource Manager. This
> information is not otherwise discoverable by a VM: the Gunyah hypervisor
> core does not provide a direct interface to discover capability IDs nor
> a way to communicate with RM without having already known the
> corresponding message queue capability ID. Add the DT bindings that
> Gunyah adheres for the hypervisor node and message queues.
> 
> Signed-off-by: Elliot Berman <quic_eberman@...cinc.com>
> ---
>  .../bindings/firmware/gunyah-hypervisor.yaml  | 82 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 83 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml
> 

Reviewed-by: Rob Herring <robh@...nel.org>