linux-kernel - [PATCH v9 12/14] x86/Kconfig: Add a configuration for Key Locker

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Date: Thu, 28 Mar 2024 18:53:44 -0700
From: "Chang S. Bae" <chang.seok.bae@...el.com>
To: linux-kernel@...r.kernel.org,
	linux-crypto@...r.kernel.org,
	dm-devel@...hat.com
Cc: ebiggers@...nel.org,
	luto@...nel.org,
	dave.hansen@...ux.intel.com,
	tglx@...utronix.de,
	bp@...en8.de,
	mingo@...nel.org,
	x86@...nel.org,
	herbert@...dor.apana.org.au,
	ardb@...nel.org,
	elliott@....com,
	dan.j.williams@...el.com,
	bernie.keany@...el.com,
	charishma1.gairuboyina@...el.com,
	chang.seok.bae@...el.com
Subject: [PATCH v9 12/14] x86/Kconfig: Add a configuration for Key Locker

Add CONFIG_X86_KEYLOCKER to gate whether Key Locker is initialized at
boot. The option is selected by the Key Locker cipher module
CRYPTO_AES_KL (to be added in a later patch).

Signed-off-by: Chang S. Bae <chang.seok.bae@...el.com>
Reviewed-by: Dan Williams <dan.j.williams@...el.com>
Cc: Borislav Petkov <bp@...en8.de>
---
Changes from v8:
* Drop the "nokeylocker" option. (Borislav Petkov)

Changes from v6:
* Rebase on the upstream: commit a894a8a56b57 ("Documentation:
  kernel-parameters: sort all "no..." parameters")

Changes from RFC v2:
* Make the option selected by CRYPTO_AES_KL. (Dan Williams)
* Massage the changelog and the config option description.
---
 arch/x86/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 39886bab943a..41eb88dcfb62 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1878,6 +1878,9 @@ config X86_INTEL_MEMORY_PROTECTION_KEYS
 
 	  If unsure, say y.
 
+config X86_KEYLOCKER
+	bool
+
 choice
 	prompt "TSX enable mode"
 	depends on CPU_SUP_INTEL
-- 
2.34.1