Re: [PATCH v2 10/12] KEYS: trusted: tee: use tee_shm_register_kernel_buf()

On Fri, 14 Jan 2022 at 20:38, Jens Wiklander jens.wiklander@linaro.org wrote:

Uses the new simplified tee_shm_register_kernel_buf() function instead of the old tee_shm_alloc() function which required specific TEE_SHM-flags

Signed-off-by: Jens Wiklander jens.wiklander@linaro.org

security/keys/trusted-keys/trusted_tee.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-)

Reviewed-by: Sumit Garg sumit.garg@linaro.org

-Sumit

diff --git a/security/keys/trusted-keys/trusted_tee.c b/security/keys/trusted-keys/trusted_tee.c index 2ce66c199e1d..c8626686ee1b 100644 --- a/security/keys/trusted-keys/trusted_tee.c +++ b/security/keys/trusted-keys/trusted_tee.c @@ -70,17 +70,15 @@ static int trusted_tee_seal(struct trusted_key_payload *p, char *datablob) memset(&inv_arg, 0, sizeof(inv_arg)); memset(&param, 0, sizeof(param));

•   reg_shm_in = tee_shm_register(pvt_data.ctx, (unsigned long)p->key,
  

•                                 p->key_len, TEE_SHM_DMA_BUF |
  

•                                 TEE_SHM_KERNEL_MAPPED);
  

•   reg_shm_in = tee_shm_register_kernel_buf(pvt_data.ctx, p->key,
  

•                                            p->key_len);
    if (IS_ERR(reg_shm_in)) {
            dev_err(pvt_data.dev, "key shm register failed\n");
            return PTR_ERR(reg_shm_in);
    }
  
  

•   reg_shm_out = tee_shm_register(pvt_data.ctx, (unsigned long)p->blob,
  

•                                  sizeof(p->blob), TEE_SHM_DMA_BUF |
  

•                                  TEE_SHM_KERNEL_MAPPED);
  

•   reg_shm_out = tee_shm_register_kernel_buf(pvt_data.ctx, p->blob,
  

•                                             sizeof(p->blob));
    if (IS_ERR(reg_shm_out)) {
            dev_err(pvt_data.dev, "blob shm register failed\n");
            ret = PTR_ERR(reg_shm_out);
  

@@ -131,17 +129,15 @@ static int trusted_tee_unseal(struct trusted_key_payload *p, char *datablob) memset(&inv_arg, 0, sizeof(inv_arg)); memset(&param, 0, sizeof(param));

•   reg_shm_in = tee_shm_register(pvt_data.ctx, (unsigned long)p->blob,
  

•                                 p->blob_len, TEE_SHM_DMA_BUF |
  

•                                 TEE_SHM_KERNEL_MAPPED);
  

•   reg_shm_in = tee_shm_register_kernel_buf(pvt_data.ctx, p->blob,
  

•                                            p->blob_len);
    if (IS_ERR(reg_shm_in)) {
            dev_err(pvt_data.dev, "blob shm register failed\n");
            return PTR_ERR(reg_shm_in);
    }
  
  

•   reg_shm_out = tee_shm_register(pvt_data.ctx, (unsigned long)p->key,
  

•                                  sizeof(p->key), TEE_SHM_DMA_BUF |
  

•                                  TEE_SHM_KERNEL_MAPPED);
  

•   reg_shm_out = tee_shm_register_kernel_buf(pvt_data.ctx, p->key,
  

•                                             sizeof(p->key));
    if (IS_ERR(reg_shm_out)) {
            dev_err(pvt_data.dev, "key shm register failed\n");
            ret = PTR_ERR(reg_shm_out);
  

@@ -192,8 +188,7 @@ static int trusted_tee_get_random(unsigned char *key, size_t key_len) memset(&inv_arg, 0, sizeof(inv_arg)); memset(&param, 0, sizeof(param));

•   reg_shm = tee_shm_register(pvt_data.ctx, (unsigned long)key, key_len,
  

•                              TEE_SHM_DMA_BUF | TEE_SHM_KERNEL_MAPPED);
  

•   reg_shm = tee_shm_register_kernel_buf(pvt_data.ctx, key, key_len);
    if (IS_ERR(reg_shm)) {
            dev_err(pvt_data.dev, "key shm register failed\n");
            return PTR_ERR(reg_shm);
  

-- 2.31.1