Hi Bertrand,
On 17/07/2025 13:11, Bertrand Marquis wrote:
When VM to VM support is activated and there is no suitable FF-A support
in the firmware, enable FF-A support for VMs to allow using it for VM to
VM communications.
If there is OP-TEE running in the secure world and using the non FF-A
communication system, having CONFIG_FFA_VM_TO_VM could be non functional
(if optee is probed first) or OP-TEE could be non functional (if FF-A is
probed first) so it is not recommended to activate the configuration
option for such systems.
To make buffer full notification work between VMs when there is no
firmware, rework the notification handling and modify the global flag to
only be used as check for firmware notification support instead.
Also split probe function into one for firmware and one for vm to vm to
make the implementation clearer.
Signed-off-by: Bertrand Marquis <bertrand.marq...@arm.com>
Reviewed-by: Jens Wiklander <jens.wiklan...@linaro.org>
Acked-by: Julien Grall <jgr...@amazon.com>
Cheers,
--
Julien Grall
