Hi Etienne,
Thanks a lot for the testing and suggestion!
Hi,
I have check the updated "ion unmapped heap" patches rebased on v4.9/topic/ion branch. Works nice but requires some updates.
Few changes in the kernel source:
- Patch "tee" driver (registering OPTEE shared memory through dmabuf FD)
https://github.com/etienne-lms/linux/commit/f2fbd9e7d65633a9bbd2406073b2092d...
I guess you want this patch in our ion branch. But could you like to show me how to pick up this patch from there? :)
- Patch "ion" driver to implement the unmapped heap (2 step patch proposed)
https://github.com/etienne-lms/linux/commit/6f3606ee40b2a24e56b2d9516cae67f4...
+https://github.com/etienne-lms/linux/commit/a87b3b51982d6e70ccc73f650d81bb8d...
Ditto.
Enable ION unmapped heap in kernel config (and ION of course) CONFIG_ION=y CONFIG_ION_UNMAPPED_HEAP=y
Platform needs to create (in the linux kernel) the ION 'unmapped heap' for target SDP memory area. This can be done either through some platform specific sequence or through linux configuration: CONFIG_ION_DUMMY_UNMAPPED_HEAP_BASE=<SDP-test-memory-phys-base> CONFIG_ION_DUMMY_UNMAPPED_HEAP_SIZE=<SDP-test-memory-byte-size>
Based on latest OP-TEE (2.5.0), optee_test allows to test the SDP through ION unmapped heap support. Please patch optee_test with proposal below: https://github.com/etienne-lms/optee_test/commit/bce6c3dba3afb72120628e097a7...
The patch seems not belong to a kernel tree. I can not find ion.h in include/uapi/linux/. How can I use this patch?
Thanks Alex
(and build the OP-TEE with *CFG_SECURE_DATA_PATH=y*)
Regards, etienne
Thanks! Alex
Regards, Joakim