On 8/13/2025 8:06 PM, Konrad Dybcio wrote:
On 8/13/25 2:35 AM, Amirreza Zarrabi wrote:
Anyone with access to contiguous physical memory should be able to share memory with QTEE using shm_bridge.
Tested-by: Neil Armstrong neil.armstrong@linaro.org Tested-by: Harshal Dev quic_hdev@quicinc.com Signed-off-by: Amirreza Zarrabi amirreza.zarrabi@oss.qualcomm.com
Hm, I thought the idea for the tzmem allocator was to abstract these operations to prevent users from shooting themselves in the foot, and this seems to be circumventing that..
Yes and no. The TEE subsystem has its own memory management code, and the qcomtee backed driver will utilize it. In other words, qcomtee will manage its own memory, and tzmem will only be used for drivers that communicate with QTEE without involving the TEE subsystem.
This aligns with future extensions for FFA memory sharing.
Regards, Amir
Konrad