Hi Yuye,

Comment below.

On Mon, Mar 20, 2023 at 4:43 AM 梅建强(禹夜) meijianqiang.mjq@alibaba-inc.com wrote:

Hi, experts

Recently, we are testing the stability for running optee xtest with environment that hafnium runs as SPMC and optee runs on SPMC as SP. When we reboot the system, xtest failed on some cases with TEEC_ERROR_OUT_OF_MEMORY. It seems to be that there is an insufficient memory allocation somewhere in the chain. We tried the following: Using Single core startup, Increased optee MAX_XLAT_TABLES size to 16, Increased optee CFG_CORE_HEAP_SIZE to 0x2000000, Increasing the size of optee CFG_TEE_RAM_VA_SIZE to 0x4000000, Increasing the size of hafnium heap_pages to 8192, But nothing seems to be working. Can you offer any help or suggestions?

It would help if you could pinpoint the source of the out-of-memory error. I guess it happens somewhere during mobj_ffa_get_by_cookie(), where especially thread_spmc_populate_mobj_from_rx() is interesting. It could also be worth setting CFG_CORE_DUMP_OOM=y, it's easy to enable but I'm afraid it's more of a long shot.

Cheers, Jens

Some other configuration for optee is attached in the issue: https://github.com/OP-TEE/optee_os/issues/5893

Regards, Yuye.