Hi all,
This patchset optimizes handling of the argument struction passed to call_with_arg when doing a yielding call to OP-TEE.
Prior to this was this structure allocated before the yielding call and then freed after it had returned. In case many calls are made in succession this results in quite a bit of unncesary allocte/free and possibly also switching back and forth to secure work in order to register if needed.
Another optimization handles the way the argument struct needed to do RPC is passed. Please see the patch "optee: add OPTEE_SMC_CALL_WITH_RPC_ARG" for details.
This patchset is based the next branch [1] in my kernel to avoid conflict with other recent patches.
Thanks, Jens
[1] https://git.linaro.org/people/jens.wiklander/linux-tee.git/log/?h=next
Jens Wiklander (3): optee: add OPTEE_SMC_CALL_WITH_RPC_ARG optee: add FF-A capability OPTEE_FFA_SEC_CAP_ARG_OFFSET optee: cache argument shared memory structs
drivers/tee/optee/call.c | 238 ++++++++++++++++++++++++------ drivers/tee/optee/core.c | 1 + drivers/tee/optee/ffa_abi.c | 36 +++-- drivers/tee/optee/optee_ffa.h | 12 +- drivers/tee/optee/optee_private.h | 31 +++- drivers/tee/optee/optee_smc.h | 47 +++++- drivers/tee/optee/smc_abi.c | 151 +++++++++++++++---- 7 files changed, 419 insertions(+), 97 deletions(-)