x86/microcode/AMD: Limit Entrysign signature checking to known generations

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Limit Entrysign sha256 signature checking to CPUs in the range Zen1-Zen5.

X86_BUG cannot be used here because the loading on the BSP happens way
too early, before the cpufeatures machinery has been set up.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/all/20251023124629.5385-1-bp@kernel.org

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Borislav Petkov (AMD) 2025-10-23 14:46:29 +02:00

parent dcb6fa37fd

commit 8a9fb5129e

1 changed files with 19 additions and 1 deletions

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arch/x86/kernel/cpu/microcode/amd.c

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