[PATCH v2] tee: amdtee: unload TA only when its refcount becomes 0
jens.wiklander at linaro.org
Mon Apr 12 07:36:53 UTC 2021
On Mon, Apr 5, 2021 at 11:43 AM Rijo Thomas <Rijo-john.Thomas at amd.com> wrote:
> Same Trusted Application (TA) can be loaded in multiple TEE contexts.
> If it is a single instance TA, the TA should not get unloaded from AMD
> Secure Processor, while it is still in use in another TEE context.
> Therefore reference count TA and unload it when the count becomes zero.
> Fixes: 757cc3e9ff1d ("tee: add AMD-TEE driver")
> Reviewed-by: Devaraj Rangasamy <Devaraj.Rangasamy at amd.com>
> Signed-off-by: Rijo Thomas <Rijo-john.Thomas at amd.com>
> * Unload TA if get_ta_refcount() fails
> drivers/tee/amdtee/amdtee_private.h | 13 ++++
> drivers/tee/amdtee/call.c | 94 ++++++++++++++++++++++++++---
> drivers/tee/amdtee/core.c | 15 +++--
> 3 files changed, 106 insertions(+), 16 deletions(-)
Looks good to me. Please address Dan's comment.
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