[PATCH v4 06/13] x86/keylocker: Define Key Locker CPUID leaf
From: Chang S. Bae <hidden>
Date: 2021-12-14 00:59:51
Also in:
lkml
Subsystem:
the rest, x86 architecture (32-bit and 64-bit) · Maintainers:
Linus Torvalds, Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen
Define the feature-specific CPUID leaf and bits. Both Key Locker enabling code in the x86 core and AES Key Locker code in the crypto library will reference them. Signed-off-by: Chang S. Bae <redacted> Reviewed-by: Dan Williams <redacted> Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org --- 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 df84c83228a1..e85dfb6c1524 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