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SubjectRe: [PATCH V4 6/6] dt-bindings: xen: Clarify "reg" purpose
On Fri, 10 Dec 2021 13:36:41 +0200, Oleksandr Tyshchenko wrote:
> From: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
>
> Xen on Arm has gained new support recently to calculate and report
> extended regions (unused address space) safe to use for external
> mappings. These regions are reported via "reg" property under
> "hypervisor" node in the guest device-tree. As region 0 is reserved
> for grant table space (always present), the indexes for extended
> regions are 1...N.
>
> No device-tree bindings update is needed (except clarifying the text)
> as guest infers the presence of extended regions from the number
> of regions in "reg" property.
>
> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
> ---
> Changes V2 -> V3:
> - new patch
>
> Changes V3 -> V4:
> - add Stefano's R-b and Rob's A-b
> - remove sentence about ACPI for "reg" and "interrupts"
> properties
>
> Changes V4 -> V4.1
> - bring the mentioning of ACPI back which, as was pointed out by Julien,
> fits in the context:
> https://lore.kernel.org/xen-devel/9602b019-6c20-cdc7-23f3-9e4f8fd720f6@xen.org/T/#t
> so technically restore V3 state
> - remove Stefano's R-b and Rob's A-b as I am not 100% sure they are
> happy with that
> ---
> Documentation/devicetree/bindings/arm/xen.txt | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>

Acked-by: Rob Herring <robh@kernel.org>

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