From: "Chang S. Bae" <chang.seok.bae@intel.com>
To: linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
dm-devel@redhat.com
Cc: ebiggers@kernel.org, elliott@hpe.com, gmazyland@gmail.com,
luto@kernel.org, dave.hansen@linux.intel.com, tglx@linutronix.de,
bp@alien8.de, mingo@kernel.org, x86@kernel.org,
herbert@gondor.apana.org.au, ardb@kernel.org,
dan.j.williams@intel.com, bernie.keany@intel.com,
charishma1.gairuboyina@intel.com,
lalithambika.krishnakumar@intel.com, nhuck@google.com,
chang.seok.bae@intel.com, Ingo Molnar <mingo@redhat.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: [PATCH v8 02/12] x86/cpufeature: Enumerate Key Locker feature
Date: Sat, 3 Jun 2023 08:22:17 -0700 [thread overview]
Message-ID: <20230603152227.12335-3-chang.seok.bae@intel.com> (raw)
In-Reply-To: <20230603152227.12335-1-chang.seok.bae@intel.com>
Key Locker is a CPU feature to minimize exposure of clear-text key
material. An encoded form, called 'key handle', is referenced for data
encryption or decryption instead of accessing the clear text key.
A wrapping key loaded in the CPU's software-inaccessible state is used
to transform a user key into a key handle. On rarely unexpected
hardware failure, the key could be lost.
Here enumerate this hardware capability. It will not be shown up in
/proc/cpuinfo as userspace usage is not supported. This is because
there is no ABI to coordinate the wrapping-key failure.
The feature supports Advanced Encryption Standard (AES) cipher
algorithm with new SIMD instruction set like its predecessor (AES-NI).
Mark the feature depending on XMM2. The new AES implementation will be
in the crypto library.
Add X86_FEATURE_KEYLOCKER to the disabled features mask at the moment.
It will be enabled under a new config option.
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
---
Changes from v6:
* Massage the changelog -- re-organize the change descriptions
Changes from RFC v2:
* Do not publish the feature flag to userspace.
* Update the changelog.
Changes from RFC v1:
* Updated the changelog.
---
arch/x86/include/asm/cpufeatures.h | 1 +
arch/x86/include/asm/disabled-features.h | 8 +++++++-
arch/x86/include/uapi/asm/processor-flags.h | 2 ++
arch/x86/kernel/cpu/cpuid-deps.c | 1 +
4 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index cb8ca46213be..4a12673df7e9 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -389,6 +389,7 @@
#define X86_FEATURE_AVX512_VPOPCNTDQ (16*32+14) /* POPCNT for vectors of DW/QW */
#define X86_FEATURE_LA57 (16*32+16) /* 5-level page tables */
#define X86_FEATURE_RDPID (16*32+22) /* RDPID instruction */
+#define X86_FEATURE_KEYLOCKER (16*32+23) /* "" Key Locker */
#define X86_FEATURE_BUS_LOCK_DETECT (16*32+24) /* Bus Lock detect */
#define X86_FEATURE_CLDEMOTE (16*32+25) /* CLDEMOTE instruction */
#define X86_FEATURE_MOVDIRI (16*32+27) /* MOVDIRI instruction */
diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h
index fafe9be7a6f4..eb841d694ed9 100644
--- a/arch/x86/include/asm/disabled-features.h
+++ b/arch/x86/include/asm/disabled-features.h
@@ -38,6 +38,12 @@
# define DISABLE_OSPKE (1<<(X86_FEATURE_OSPKE & 31))
#endif /* CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS */
+#ifdef CONFIG_X86_KEYLOCKER
+# define DISABLE_KEYLOCKER 0
+#else
+# define DISABLE_KEYLOCKER (1<<(X86_FEATURE_KEYLOCKER & 31))
+#endif /* CONFIG_X86_KEYLOCKER */
+
#ifdef CONFIG_X86_5LEVEL
# define DISABLE_LA57 0
#else
@@ -126,7 +132,7 @@
#define DISABLED_MASK14 0
#define DISABLED_MASK15 0
#define DISABLED_MASK16 (DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57|DISABLE_UMIP| \
- DISABLE_ENQCMD)
+ DISABLE_ENQCMD|DISABLE_KEYLOCKER)
#define DISABLED_MASK17 0
#define DISABLED_MASK18 0
#define DISABLED_MASK19 0
diff --git a/arch/x86/include/uapi/asm/processor-flags.h b/arch/x86/include/uapi/asm/processor-flags.h
index d898432947ff..262348aeaad1 100644
--- a/arch/x86/include/uapi/asm/processor-flags.h
+++ b/arch/x86/include/uapi/asm/processor-flags.h
@@ -128,6 +128,8 @@
#define X86_CR4_PCIDE _BITUL(X86_CR4_PCIDE_BIT)
#define X86_CR4_OSXSAVE_BIT 18 /* enable xsave and xrestore */
#define X86_CR4_OSXSAVE _BITUL(X86_CR4_OSXSAVE_BIT)
+#define X86_CR4_KEYLOCKER_BIT 19 /* enable Key Locker */
+#define X86_CR4_KEYLOCKER _BITUL(X86_CR4_KEYLOCKER_BIT)
#define X86_CR4_SMEP_BIT 20 /* enable SMEP support */
#define X86_CR4_SMEP _BITUL(X86_CR4_SMEP_BIT)
#define X86_CR4_SMAP_BIT 21 /* enable SMAP support */
diff --git a/arch/x86/kernel/cpu/cpuid-deps.c b/arch/x86/kernel/cpu/cpuid-deps.c
index f6748c8bd647..200c5e69f78c 100644
--- a/arch/x86/kernel/cpu/cpuid-deps.c
+++ b/arch/x86/kernel/cpu/cpuid-deps.c
@@ -81,6 +81,7 @@ static const struct cpuid_dep cpuid_deps[] = {
{ X86_FEATURE_XFD, X86_FEATURE_XSAVES },
{ X86_FEATURE_XFD, X86_FEATURE_XGETBV1 },
{ X86_FEATURE_AMX_TILE, X86_FEATURE_XFD },
+ { X86_FEATURE_KEYLOCKER, X86_FEATURE_XMM2 },
{}
};
--
2.17.1
next prev parent reply other threads:[~2023-06-03 15:35 UTC|newest]
Thread overview: 147+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-12 21:12 [PATCH v5 00/12] x86: Support Key Locker Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 01/12] Documentation/x86: Document " Chang S. Bae
2023-06-05 10:52 ` Bagas Sanjaya
2022-01-12 21:12 ` [PATCH v5 02/12] x86/cpufeature: Enumerate Key Locker feature Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 03/12] x86/insn: Add Key Locker instructions to the opcode map Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 04/12] x86/asm: Add a wrapper function for the LOADIWKEY instruction Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 05/12] x86/msr-index: Add MSRs for Key Locker internal wrapping key Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 06/12] x86/keylocker: Define Key Locker CPUID leaf Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 07/12] x86/cpu/keylocker: Load an internal wrapping key at boot-time Chang S. Bae
2022-08-23 15:49 ` Evan Green
2022-08-24 22:20 ` Chang S. Bae
2022-08-24 22:52 ` Evan Green
2022-08-25 1:06 ` Chang S. Bae
2022-08-25 15:31 ` Evan Green
2022-08-31 23:08 ` Chang S. Bae
2022-09-06 16:22 ` Evan Green
2022-09-06 16:46 ` Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 08/12] x86/PM/keylocker: Restore internal wrapping key on resume from ACPI S3/4 Chang S. Bae
2022-01-29 17:31 ` [PATCH v5-fix " Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 09/12] x86/cpu: Add a configuration and command line option for Key Locker Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 10/12] crypto: x86/aes - Prepare for a new AES implementation Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 11/12] crypto: x86/aes-kl - Support AES algorithm using Key Locker instructions Chang S. Bae
2022-01-12 21:12 ` [PATCH v5 12/12] crypto: x86/aes-kl - Support XTS mode Chang S. Bae
2022-01-13 22:16 ` [PATCH v5 00/12] x86: Support Key Locker Dave Hansen
2022-01-13 22:34 ` Bae, Chang Seok
2023-04-10 22:59 ` [PATCH v6 " Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 01/12] Documentation/x86: Document " Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 02/12] x86/cpufeature: Enumerate Key Locker feature Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 03/12] x86/insn: Add Key Locker instructions to the opcode map Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 04/12] x86/asm: Add a wrapper function for the LOADIWKEY instruction Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 05/12] x86/msr-index: Add MSRs for Key Locker internal wrapping key Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 06/12] x86/keylocker: Define Key Locker CPUID leaf Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 07/12] x86/cpu/keylocker: Load an internal wrapping key at boot-time Chang S. Bae
2023-05-05 23:05 ` Eric Biggers
2023-05-08 18:18 ` Chang S. Bae
2023-05-08 21:56 ` Dave Hansen
2023-05-09 0:31 ` Chang S. Bae
2023-05-09 0:51 ` Dave Hansen
2023-05-08 19:18 ` Elliott, Robert (Servers)
2023-05-08 20:15 ` Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 08/12] x86/PM/keylocker: Restore internal wrapping key on resume from ACPI S3/4 Chang S. Bae
2023-05-05 23:09 ` Eric Biggers
2023-05-08 18:18 ` Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 09/12] x86/cpu: Add a configuration and command line option for Key Locker Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 10/12] crypto: x86/aes - Prepare for a new AES implementation Chang S. Bae
2023-05-05 23:27 ` Eric Biggers
2023-05-09 0:55 ` Chang S. Bae
2023-05-11 19:05 ` Chang S. Bae
2023-05-11 21:39 ` Eric Biggers
2023-05-11 23:19 ` Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 11/12] crypto: x86/aes-kl - Support AES algorithm using Key Locker instructions Chang S. Bae
2023-05-06 0:01 ` Eric Biggers
2023-05-08 18:18 ` Chang S. Bae
2023-05-24 17:18 ` Chang S. Bae
2023-05-12 17:52 ` Milan Broz
2023-05-08 19:21 ` Elliott, Robert (Servers)
2023-05-08 19:24 ` Elliott, Robert (Servers)
2023-05-08 20:00 ` Chang S. Bae
2023-04-10 22:59 ` [PATCH v6 12/12] crypto: x86/aes-kl - Support XTS mode Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 00/12] x86: Support Key Locker Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 01/12] Documentation/x86: Document " Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 02/12] x86/cpufeature: Enumerate Key Locker feature Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 03/12] x86/insn: Add Key Locker instructions to the opcode map Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 04/12] x86/asm: Add a wrapper function for the LOADIWKEY instruction Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 05/12] x86/msr-index: Add MSRs for Key Locker wrapping key Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 06/12] x86/keylocker: Define Key Locker CPUID leaf Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 07/12] x86/cpu/keylocker: Load a wrapping key at boot-time Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 08/12] x86/PM/keylocker: Restore the wrapping key on the resume from ACPI S3/4 Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 09/12] x86/cpu: Add a configuration and command line option for Key Locker Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 10/12] crypto: x86/aesni - Use the proper data type in struct aesni_xts_ctx Chang S. Bae
2023-05-26 6:54 ` Eric Biggers
2023-05-30 20:50 ` Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 11/12] crypto: x86/aes - Prepare for a new AES implementation Chang S. Bae
2023-05-24 16:57 ` [PATCH v7 12/12] crypto: x86/aes-kl - Implement the AES-XTS algorithm Chang S. Bae
2023-05-26 7:23 ` Eric Biggers
2023-05-30 20:49 ` Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 00/12] x86: Support Key Locker Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 01/12] Documentation/x86: Document " Chang S. Bae
2023-06-05 10:54 ` Bagas Sanjaya
2023-06-06 2:17 ` Randy Dunlap
2023-06-06 4:18 ` Chang S. Bae
2023-06-03 15:22 ` Chang S. Bae [this message]
2023-06-03 15:22 ` [PATCH v8 03/12] x86/insn: Add Key Locker instructions to the opcode map Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 04/12] x86/asm: Add a wrapper function for the LOADIWKEY instruction Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 05/12] x86/msr-index: Add MSRs for Key Locker wrapping key Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 06/12] x86/keylocker: Define Key Locker CPUID leaf Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 07/12] x86/cpu/keylocker: Load a wrapping key at boot-time Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 08/12] x86/PM/keylocker: Restore the wrapping key on the resume from ACPI S3/4 Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 09/12] x86/cpu: Add a configuration and command line option for Key Locker Chang S. Bae
2023-06-03 16:37 ` Borislav Petkov
2023-06-04 22:13 ` Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 10/12] crypto: x86/aesni - Use the proper data type in struct aesni_xts_ctx Chang S. Bae
2023-06-04 15:34 ` Eric Biggers
2023-06-04 22:02 ` Chang S. Bae
2023-06-05 2:46 ` Eric Biggers
2023-06-05 4:41 ` Chang S. Bae
2023-06-21 12:06 ` [PATCH] crypto: x86/aesni: Align the address before aes_set_key_common() Chang S. Bae
2023-07-14 8:51 ` Herbert Xu
2023-06-03 15:22 ` [PATCH v8 11/12] crypto: x86/aes - Prepare for a new AES-XTS implementation Chang S. Bae
2023-06-03 15:22 ` [PATCH v8 12/12] crypto: x86/aes-kl - Implement the AES-XTS algorithm Chang S. Bae
2023-06-07 5:35 ` Eric Biggers
2023-06-07 22:06 ` Chang S. Bae
2024-03-11 21:32 ` [PATCH] crypto: x86/aesni - Update aesni_set_key() to return void Chang S. Bae
2024-03-12 2:15 ` Eric Biggers
2024-03-12 7:46 ` Ard Biesheuvel
2024-03-12 15:03 ` Chang S. Bae
2024-03-12 15:18 ` Ard Biesheuvel
2024-03-12 15:37 ` Chang S. Bae
2024-03-22 23:04 ` [PATCH v2 0/2] crypto: x86/aesni - Simplify AES key expansion code Chang S. Bae
2024-03-22 23:04 ` [PATCH v2 1/2] crypto: x86/aesni - Rearrange AES key size check Chang S. Bae
2024-03-22 23:04 ` [PATCH v2 2/2] crypto: x86/aesni - Update aesni_set_key() to return void Chang S. Bae
2024-03-28 10:57 ` [PATCH v2 0/2] crypto: x86/aesni - Simplify AES key expansion code Herbert Xu
2024-03-29 1:53 ` [PATCH v9 00/14] x86: Support Key Locker Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 01/14] Documentation/x86: Document " Chang S. Bae
2024-03-31 15:48 ` Randy Dunlap
2024-03-29 1:53 ` [PATCH v9 02/14] x86/cpufeature: Enumerate Key Locker feature Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 03/14] x86/insn: Add Key Locker instructions to the opcode map Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 04/14] x86/asm: Add a wrapper function for the LOADIWKEY instruction Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 05/14] x86/msr-index: Add MSRs for Key Locker wrapping key Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 06/14] x86/keylocker: Define Key Locker CPUID leaf Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 07/14] x86/cpu/keylocker: Load a wrapping key at boot time Chang S. Bae
2024-04-07 23:04 ` [PATCH v9a " Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 08/14] x86/PM/keylocker: Restore the wrapping key on the resume from ACPI S3/4 Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 09/14] x86/hotplug/keylocker: Ensure wrapping key backup capability Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 10/14] x86/cpu/keylocker: Check Gather Data Sampling mitigation Chang S. Bae
2024-03-29 6:57 ` Pawan Gupta
2024-04-07 23:04 ` [PATCH v9a " Chang S. Bae
2024-04-19 0:01 ` Pawan Gupta
2024-04-22 7:49 ` Chang S. Bae
2024-04-19 17:47 ` [PATCH 15/14] x86/gds: Lock GDS mitigation when keylocker feature is present Pawan Gupta
2024-04-19 18:03 ` Daniel Sneddon
2024-04-19 20:19 ` Pawan Gupta
2024-04-19 20:33 ` Daniel Sneddon
2024-04-22 7:35 ` Chang S. Bae
2024-04-22 21:32 ` Pawan Gupta
2024-04-22 22:13 ` Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 11/14] x86/cpu/keylocker: Check Register File Data Sampling mitigation Chang S. Bae
2024-03-29 6:20 ` Pawan Gupta
2024-04-07 23:04 ` [PATCH v9a " Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 12/14] x86/Kconfig: Add a configuration for Key Locker Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 13/14] crypto: x86/aes - Prepare for new AES-XTS implementation Chang S. Bae
2024-03-29 1:53 ` [PATCH v9 14/14] crypto: x86/aes-kl - Implement the AES-XTS algorithm Chang S. Bae
2024-04-07 23:24 ` [PATCH v9 00/14] x86: Support Key Locker Chang S. Bae
2024-04-08 1:48 ` Eric Biggers
2024-04-15 22:16 ` Chang S. Bae
2024-04-15 22:54 ` Eric Biggers
2024-04-15 22:58 ` Chang S. Bae
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