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Message-ID: <20240528100448.4364-1-jarkko@kernel.org>
Date: Tue, 28 May 2024 13:04:48 +0300
From: Jarkko Sakkinen <jarkko@...nel.org>
To: linux-integrity@...r.kernel.org
Cc: keyrings@...r.kernel.org,
James.Bottomley@...senPartnership.com,
Jarkko Sakkinen <jarkko@...nel.org>,
Peter Huewe <peterhuewe@....de>,
Jason Gunthorpe <jgg@...pe.ca>,
linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] tpm: Enable TCG_TPM2_HMAC by default only for X86_64
Given the not fully root caused performance issues on non-x86 platforms,
enable the feature by default only for x86-64. That is the platform it
brings the most value and has gone most of the QA. Can be reconsidered
later and can be obviously opt-in enabled too on any arch.
Link: https://lore.kernel.org/linux-integrity/bf67346ef623ff3c452c4f968b7d900911e250c3.camel@gmail.com/#t
Signed-off-by: Jarkko Sakkinen <jarkko@...nel.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..cf0be8a7939d 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 X86_64
select CRYPTO_ECDH
select CRYPTO_LIB_AESCFB
select CRYPTO_LIB_SHA256
--
2.45.1
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