x86/cpufeatures: Add X86_FEATURE_SGX_EUPDATESVN feature flag

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Add a flag indicating whenever ENCLS[EUPDATESVN] SGX instruction is
supported. This will be used by SGX driver to perform CPU SVN updates.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Nataliia Bondarevska <bondarn@google.com>

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Elena Reshetova 2025-10-16 16:11:05 +03:00 • committed by Dave Hansen

parent 483fc19e9c

commit 6ffdb49101

3 changed files with 3 additions and 0 deletions

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arch/x86/include/asm/cpufeatures.h

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arch/x86/kernel/cpu/cpuid-deps.c

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arch/x86/kernel/cpu/scattered.c

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