Messages in this thread | | | From | Achin Gupta <> | Subject | Re: [RFC PATCH 1/3] dt-bindings: Add ARM PSA FF binding for non-secure VM partitions | Date | Thu, 11 Jun 2020 15:46:35 +0000 |
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Hi Will,
> On 10 Jun 2020, at 08:43, Will Deacon <will@kernel.org> wrote: > > On Tue, Jun 09, 2020 at 04:35:51PM -0600, Rob Herring wrote: >> On Mon, Jun 01, 2020 at 10:45:10AM +0100, Sudeep Holla wrote: >>> Add devicetree bindings for a Arm PSA FF-A compliant non-secure partition >>> at virtual interface(VMs). >>> >>> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> >>> --- >>> .../devicetree/bindings/arm/arm,psa-ffa.txt | 47 +++++++++++++++++++ >>> 1 file changed, 47 insertions(+) >>> create mode 100644 Documentation/devicetree/bindings/arm/arm,psa-ffa.txt >> >> I'm hoping this goes away if the firmware is discoverable, but if not DT >> bindings are DT schema now. > > We'll need the binding for the kvm host side, because there are plenty > of partition properties that are not discoverable (e.g. number of vCPUs).
Just trying to understand the req. a bit better…
The FF-A driver in the host can use FFA_PARTITION_INFO_GET to determine the count of partitions and their vCPUs.
Is this about a guest being able to find out how many vCPUs it has?
Cheers, Achin
> > I'll have a go a yamlifying what I have... > > Will >
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