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tee: add tee_shm_register_{user,kernel}_buf()

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Adds the two new functions tee_shm_register_user_buf() and
tee_shm_register_kernel_buf() which should be used instead of the old
tee_shm_register().

This avoids having the caller supplying the flags parameter which
exposes a bit more than desired of the internals of the TEE subsystem.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This commit is contained in:
Jens Wiklander
2022-02-04 10:33:56 +01:00
parent 924e322692
commit 056d3fed3d
4 changed files with 38 additions and 2 deletions
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2
include/linux/tee_drv.h
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@@ -287,6 +287,8 @@ struct tee_shm *tee_shm_alloc_kernel_buf(struct tee_context *ctx, size_t size);
*/
struct tee_shm *tee_shm_register(struct tee_context *ctx, unsigned long addr,
size_t length, u32 flags);
struct tee_shm *tee_shm_register_kernel_buf(struct tee_context *ctx,
void *addr, size_t length);
/**
* tee_shm_is_registered() - Check if shared memory object in registered in TEE