Hello arm-soc maintainers,
Please pull these patches which improves performance when communicating
with OP-TEE in the secure world. A cache of argument structs is
implemented to minimize the number of alloc/free and possibly also
register/unregister of these buffers in the secure world. This boosts
the performance in particular in a FF-A configuration. It should also
save a bit of shared memory since each multiple a physical page now can
hold multiple argument structs, instead of one page per struct as it was
before.
The OP-TEE SMC ABI is also extended to pass an argument struct needed
for RPC together with the primary argument struct, in a manner similar
the OP-TEE FF-A ABI.
Thanks,
Jens
The following changes since commit 3123109284176b1532874591f7c81f3837bbdc17:
Linux 5.18-rc1 (2022-04-03 14:08:21 -0700)
are available in the Git repository at:
https://git.linaro.org/people/jens.wiklander/linux-tee.git tags/optee-rpc-arg-for-v5.19
for you to fetch changes up to 5b4018b959149eb5b5f3004fc0339674af67516b:
optee: cache argument shared memory structs (2022-04-25 21:13:05 +0200)
----------------------------------------------------------------
OP-TEE RPC argument cache
Adds caching of the OP-TEE argument structure used to pass request to
secure world. This reduces quite a bit of unnecessary alloc/free and
possibly switching back and forth to secure work in order to register
the buffers in some configurations, most notably FF-A.
----------------------------------------------------------------
Jens Wiklander (4):
optee: rename rpc_arg_count to rpc_param_count
optee: add OPTEE_SMC_CALL_WITH_RPC_ARG and OPTEE_SMC_CALL_WITH_REGD_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 | 48 +++++++-
drivers/tee/optee/smc_abi.c | 197 +++++++++++++++++++++++++------
7 files changed, 461 insertions(+), 102 deletions(-)