From: Jarkko Sakkinen <jarkko@kernel.org>
To: linux-integrity@vger.kernel.org
Cc: keyrings@vger.kernel.org, Jarkko Sakkinen <jarkko@kernel.org>,
Vitor Soares <ivitro@gmail.com>, Peter Huewe <peterhuewe@gmx.de>,
Jason Gunthorpe <jgg@ziepe.ca>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] tpm: Disable TCG_TPM2_HMAC by default
Date: Sat, 18 May 2024 14:34:24 +0300 [thread overview]
Message-ID: <20240518113424.13486-1-jarkko@kernel.org> (raw)
Causes performance drop in initialization so needs to be opt-in.
Distributors are capable of opt-in enabling this. Could be also handled by
kernel-command line in the future.
Reported-by: Vitor Soares <ivitro@gmail.com>
Closes: https://lore.kernel.org/linux-integrity/bf67346ef623ff3c452c4f968b7d900911e250c3.camel@gmail.com/#t
Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
---
drivers/char/tpm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig
index e63a6a17793c..db41301e63f2 100644
--- a/drivers/char/tpm/Kconfig
+++ b/drivers/char/tpm/Kconfig
@@ -29,7 +29,7 @@ if TCG_TPM
config TCG_TPM2_HMAC
bool "Use HMAC and encrypted transactions on the TPM bus"
- default y
+ default n
select CRYPTO_ECDH
select CRYPTO_LIB_AESCFB
select CRYPTO_LIB_SHA256
--
2.45.0
next reply other threads:[~2024-05-18 11:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-18 11:34 Jarkko Sakkinen [this message]
2024-05-20 14:50 ` [PATCH] tpm: Disable TCG_TPM2_HMAC by default James Bottomley
2024-05-20 15:44 ` Jarkko Sakkinen
-- strict thread matches above, loose matches on Subject: below --
2025-08-14 16:22 Chris Fenner
2025-08-15 12:04 ` Jarkko Sakkinen
2025-08-15 15:45 ` Chris Fenner
2025-08-15 16:26 ` Jarkko Sakkinen
2025-08-15 17:06 ` Chris Fenner
2025-08-15 17:45 ` Jarkko Sakkinen
2025-08-15 17:52 ` Jarkko Sakkinen
2025-08-15 17:58 ` Jarkko Sakkinen
2025-08-15 18:04 ` Jarkko Sakkinen
2025-08-15 18:09 ` Chris Fenner
2025-08-18 17:42 ` Jarkko Sakkinen
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