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x86/microcode: Fix comment in microcode_loader_disabled()

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The code in microcode_loader_disabled() actually checks for the bit 31
in CPUID[1]:ECX being set. Update the comment to match the code.

No functional change intended.

Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20260512152754.671760-1-xiaoyao.li@intel.com
This commit is contained in:
Xiaoyao Li 2026-05-12 23:27:54 +08:00 committed by Borislav Petkov (AMD)
parent 00e05495c5
commit 1458ade746
1 changed files with 1 additions and 1 deletions
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arch/x86/kernel/cpu/microcode/core.c
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@ -126,7 +126,7 @@ bool __init microcode_loader_disabled(void)
}
/*
* 2) Bit 31 in CPUID[1]:ECX is clear
* 2) Bit 31 in CPUID[1]:ECX is set
* The bit is reserved for hypervisor use. This is still not
* completely accurate as XEN PV guests don't see that CPUID bit
* set, but that's good enough as they don't land on the BSP