On Thu, Jan 27, 2022 at 7:32 AM Sumit Garg sumit.garg@linaro.org wrote:
+Lars
Hi Jens,
On Tue, 25 Jan 2022 at 21:59, Jens Wiklander jens.wiklander@linaro.org wrote:
Uses the new driver internal tee_context when allocating driver private shared memory. This decouples the shared memory object from its original tee_context. This is needed when the life time of such a memory allocation outlives the client tee_context.
Fixes: 217e0250cccb ("tee: use reference counting for tee_context") Cc: stable@vger.kernel.org Reviewed-by: Sumit Garg sumit.garg@linaro.org Signed-off-by: Jens Wiklander jens.wiklander@linaro.org
drivers/tee/optee/ffa_abi.c | 17 +++++++++-------- drivers/tee/optee/smc_abi.c | 7 ++++--- 2 files changed, 13 insertions(+), 11 deletions(-)
As this commit fixes multiple issues seen earlier due to pre-allocated SHM cache in client's context. I think it makes sense to separate this as a standalone fix with few bits from patch #6 to target 5.17 release. As otherwise it will take a long path via 5.18 and then backport to stable trees. In the meantime there can be other side effects noticed similar to one from Lars.
The few bits needed from #6 is actually the entire "optee: add driver private tee_context". I'll combine the two and send them as a separate patch, that way it's easier to keep track of what's needed for the stable trees.
Thanks, Jens