Re: [PATCH v5 6/8] tee: Correct inappropriate usage of TEE_SHM_DMA_BUF flag
From: Jens Wiklander <hidden>
Date: 2021-06-15 07:10:24
Also in:
linux-mips, lkml, op-tee
On Tue, Jun 15, 2021 at 12:33 AM Tyler Hicks [off-list ref] wrote:
From: Sumit Garg <redacted> Currently TEE_SHM_DMA_BUF flag has been inappropriately used to not register shared memory allocated for private usage by underlying TEE driver: OP-TEE in this case. So rather add a new flag as TEE_SHM_PRIV that can be utilized by underlying TEE drivers for private allocation and usage of shared memory. With this corrected, allow tee_shm_alloc_kernel_buf() to allocate a shared memory region without the backing of dma-buf. Cc: stable@vger.kernel.org Signed-off-by: Sumit Garg <redacted> Co-developed-by: Tyler Hicks <redacted> Signed-off-by: Tyler Hicks <redacted> --- drivers/tee/optee/call.c | 2 +- drivers/tee/optee/core.c | 3 ++- drivers/tee/optee/rpc.c | 5 +++-- drivers/tee/optee/shm_pool.c | 8 ++++++-- drivers/tee/tee_shm.c | 4 ++-- include/linux/tee_drv.h | 1 + 6 files changed, 15 insertions(+), 8 deletions(-)
Reviewed-by: Jens Wiklander <redacted>