MSR_IA32_UMWAIT_CONTROL_C02_DISABLE 12 arch/x86/kernel/cpu/umwait.c ((c02_disable) & MSR_IA32_UMWAIT_CONTROL_C02_DISABLE)) MSR_IA32_UMWAIT_CONTROL_C02_DISABLE 111 arch/x86/kernel/cpu/umwait.c return !(ctrl & MSR_IA32_UMWAIT_CONTROL_C02_DISABLE); MSR_IA32_UMWAIT_CONTROL_C02_DISABLE 124 arch/x86/kernel/cpu/umwait.c ctrl |= MSR_IA32_UMWAIT_CONTROL_C02_DISABLE;