On Fri, Jan 10, 2025 at 03:27:37PM -0500, Rik van Riel wrote: > I don't see X86_FEATURE_TLBI defined in the tip > tree. Which CPUID bit does that need to be? It should be added as: #define X86_FEATURE_INVLPGB (13*32+ 3) /* INVLPGB and TLBSYNC instruction supported. */ in arch/x86/include/asm/cpufeatures.h -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette