Re: [Xen-devel] [PATCH] devicetree, xen: add xen, shared-memory binding

[Rob Herring <robh@xxxxxxxxxx>]

On Mon, Oct 08, 2018 at 04:03:54PM -0700, Stefano Stabellini wrote:
> Introduce a device tree binding for Xen reserved-memory regions. They
> are used to share memory across VMs from the VM config files. (See
> static_shm config option.)
>  
> Signed-off-by: Stefano Stabellini <stefanos@xxxxxxxxxx>

checkpatch.pl complains that the author and S-o-b don't match.

> Cc: julien.grall@xxxxxxx
> 
> diff --git 
> a/Documentation/devicetree/bindings/reserved-memory/xen,shared-memory.txt 
> b/Documentation/devicetree/bindings/reserved-memory/xen,shared-memory.txt
> new file mode 100644
> index 0000000..a927a94
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/reserved-memory/xen,shared-memory.txt
> @@ -0,0 +1,20 @@
> +* Xen hypervisor reserved-memory binding
> +
> +Expose one or more memory regions as reserved-memory to the guest
> +virtual machine. Typically, a region is configured at VM creation time
> +to be a shared memory area across multiple virtual machines for
> +communication among them.
> +
> +For each of these pre-shared memory regions, a range is exposed under
> +the /reserved-memory node as a child node. Each range sub-node is named
> +xen-shmem@<address> and has the following properties:
> +
> +- compatible:
> +     compatible = xen,shared-memory"

Any need for versioning?

> +
> +- reg:
> +     the base guest physical address and size of the shared memory region
> +
> +- id:

xen,id

> +     a string that identifies the shared memory region as specified in
> +     the VM config file

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