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authorSascha Hauer <s.hauer@pengutronix.de>2019-01-14 09:09:57 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2019-01-14 09:09:57 +0100
commit33fdc89d4cbd74aa54c28dc61d62972ab164e64d (patch)
treeda5ceff551dc1fdf2f2cc40e97a08035f9ef84fb /dts/Bindings/reserved-memory
parent13a52906ce67ed2ce67bfc10714934ffa6c5d646 (diff)
downloadbarebox-33fdc89d4cbd74aa54c28dc61d62972ab164e64d.tar.gz
barebox-33fdc89d4cbd74aa54c28dc61d62972ab164e64d.tar.xz
dts: update to v5.0-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/reserved-memory')
-rw-r--r--dts/Bindings/reserved-memory/xen,shared-memory.txt24
1 files changed, 24 insertions, 0 deletions
diff --git a/dts/Bindings/reserved-memory/xen,shared-memory.txt b/dts/Bindings/reserved-memory/xen,shared-memory.txt
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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