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android_kernel_samsung_sm87…/bindings/reserved-memory/xen,shared-memory.txt
Melody Olvera 6f18ce8026 dt-bindings: Add devicetree bindings
Add snapshot of device tree bindings from keystone common kernel, branch
"android-mainline-keystone-qcom-release" at c4c12103f9c0 ("Snap for 9228065
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Change-Id: I7682079615cbd9f29340a5c1f2a1d84ec441a1f1
Signed-off-by: Melody Olvera <quic_molvera@quicinc.com>
2023-04-03 15:40:37 -07:00

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* 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-v1"
- reg:
the base guest physical address and size of the shared memory region
- xen,offset: (borrower VMs only)
64 bit integer offset within the owner virtual machine's shared
memory region used for the mapping in the borrower VM.
- xen,id:
a string that identifies the shared memory region as specified in
the VM config file