Messages in this thread Patch in this message | | | From | "Chang S. Bae" <> | Subject | [PATCH v7 06/12] x86/keylocker: Define Key Locker CPUID leaf | Date | Wed, 24 May 2023 09:57:11 -0700 |
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Both Key Locker enabling code in the x86 core and AES Key Locker code in the crypto library will need to reference some CPUID bits. Define these feature-specific CPUID leaf and bits.
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: x86@kernel.org Cc: linux-kernel@vger.kernel.org --- Changes from v6: * Tweak the changelog -- comment the reason first and then brief the change.
Changes from RFC v2: * Separate out the code as a new patch. --- arch/x86/include/asm/keylocker.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/arch/x86/include/asm/keylocker.h b/arch/x86/include/asm/keylocker.h index 9b3bec452b31..1717e0866254 100644 --- a/arch/x86/include/asm/keylocker.h +++ b/arch/x86/include/asm/keylocker.h @@ -5,6 +5,7 @@ #ifndef __ASSEMBLY__ +#include <linux/bits.h> #include <asm/fpu/types.h> /** @@ -21,5 +22,11 @@ struct iwkey { struct reg_128_bit encryption_key[2]; }; +#define KEYLOCKER_CPUID 0x019 +#define KEYLOCKER_CPUID_EAX_SUPERVISOR BIT(0) +#define KEYLOCKER_CPUID_EBX_AESKLE BIT(0) +#define KEYLOCKER_CPUID_EBX_WIDE BIT(2) +#define KEYLOCKER_CPUID_EBX_BACKUP BIT(4) + #endif /*__ASSEMBLY__ */ #endif /* _ASM_KEYLOCKER_H */ -- 2.17.1
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