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* [PATCH] KEYS: trusted: tee: Make registered shm dependency explicit
@ 2022-11-10 11:11 Sumit Garg
  2022-11-10 11:14 ` Sumit Garg
  0 siblings, 1 reply; 4+ messages in thread
From: Sumit Garg @ 2022-11-10 11:11 UTC (permalink / raw)
  To: keyrings
  Cc: jejb, zohar, linux-integrity, linux-security-module,
	linux-kernel, Sumit Garg, Jerome Forissier

TEE trusted keys support depends on registered shared memory support
since the key buffers are needed to be registered with OP-TEE. So make
that dependency explicit to not register trusted keys support if
underlying implementation doesn't support registered shared memory.

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Tested-by: Jerome Forissier <jerome.forissier@linaro.org>
---
 security/keys/trusted-keys/trusted_tee.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/security/keys/trusted-keys/trusted_tee.c b/security/keys/trusted-keys/trusted_tee.c
index c8626686ee1b..ac3e270ade69 100644
--- a/security/keys/trusted-keys/trusted_tee.c
+++ b/security/keys/trusted-keys/trusted_tee.c
@@ -219,7 +219,8 @@ static int trusted_tee_get_random(unsigned char *key, size_t key_len)
 
 static int optee_ctx_match(struct tee_ioctl_version_data *ver, const void *data)
 {
-	if (ver->impl_id == TEE_IMPL_ID_OPTEE)
+	if (ver->impl_id == TEE_IMPL_ID_OPTEE &&
+	    ver->gen_caps & TEE_GEN_CAP_REG_MEM)
 		return 1;
 	else
 		return 0;
-- 
2.34.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2022-11-16  0:39 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2022-11-10 11:11 [PATCH] KEYS: trusted: tee: Make registered shm dependency explicit Sumit Garg
2022-11-10 11:14 ` Sumit Garg
2022-11-16  0:33   ` Jarkko Sakkinen
2022-11-16  0:39     ` Jarkko Sakkinen

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