Messages in this thread | | | From | Sumit Garg <> | Date | Mon, 30 Oct 2023 11:32:47 +0530 | Subject | Re: [PATCH 0/2] OP-TEE FF-A notifications |
| |
Hi Jens,
On Thu, 26 Oct 2023 at 13:34, Jens Wiklander <jens.wiklander@linaro.org> wrote: > > Hi all, > > This patchset adds support for using FF-A notifications as a delivery > mechanism of asynchronous notifications from OP-TEE running in the secure > world. Support for asynchronous notifications via the SMC ABI was added in > [1], here we add the counterpart needed when using the the FF-A ABI. > > Support for FF-A notifications is added with [2] and this patch set is based > on Sudeeps tree at [3].
It's good to see FF-A notifications support coming through. The good aspect here is that FF-A uses a common secure world SGI for notifications and doesn't have to deal with platform specific reserved SPI for notifications.
From OP-TEE point of view I think most of the secure SGI donation base would be common, so can we switch the SMC ABI to use this donated secure world SGI for notifications too?
-Sumit
> > [1] https://lore.kernel.org/lkml/20211103090255.998070-1-jens.wiklander@linaro.org/ > [2] https://lore.kernel.org/linux-arm-kernel/20231005-ffa_v1-1_notif-v4-0-cddd3237809c@arm.com/ > [3] https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git/tag/?h=ffa-updates-6.7 > commit bcefd1bf63b1 ("firmware: arm_ffa: Upgrade the driver version to v1.1") > > Thanks, > Jens > > Jens Wiklander (2): > optee: provide optee_do_bottom_half() as a common function > optee: ffa_abi: add asynchronous notifications > > drivers/tee/optee/call.c | 31 ++++++++++- > drivers/tee/optee/ffa_abi.c | 91 ++++++++++++++++++++++++++++++- > drivers/tee/optee/optee_ffa.h | 28 ++++++++-- > drivers/tee/optee/optee_private.h | 9 ++- > drivers/tee/optee/smc_abi.c | 36 ++---------- > 5 files changed, 153 insertions(+), 42 deletions(-) > > > base-commit: bcefd1bf63b1ec9bb08067021cf47f0fad96f395 > -- > 2.34.1 >
| |