Re: [PATCHv6 01/16] x86/cpu: Enumerate the LASS feature bits

From: Xin Li
Date: Fri Jun 20 2025 - 11:38:21 EST


On 6/20/2025 6:53 AM, Kirill A. Shutemov wrote:
diff --git a/arch/x86/Kconfig.cpufeatures b/arch/x86/Kconfig.cpufeatures
index 250c10627ab3..9574c198fc08 100644
--- a/arch/x86/Kconfig.cpufeatures
+++ b/arch/x86/Kconfig.cpufeatures
@@ -124,6 +124,10 @@ config X86_DISABLED_FEATURE_PCID
def_bool y
depends on !X86_64
+config X86_DISABLED_FEATURE_LASS
+ def_bool y
+ depends on !X86_64
+
config X86_DISABLED_FEATURE_PKU
def_bool y
depends on !X86_INTEL_MEMORY_PROTECTION_KEYS

You don't need to add X86_DISABLED_FEATURE_LASS, because the LASS code
is NOT optional at build time, i.e., you now don't have CONFIG_X86_LASS.

It was removed per the change log:

Changes from v1[1]:
- Remove CONFIG_X86_LASS

Thanks!
Xin