SPECTRE_V2_USER_CMD_NONE 651 arch/x86/kernel/cpu/bugs.c { "off", SPECTRE_V2_USER_CMD_NONE, false }, SPECTRE_V2_USER_CMD_NONE 673 arch/x86/kernel/cpu/bugs.c return SPECTRE_V2_USER_CMD_NONE; SPECTRE_V2_USER_CMD_NONE 713 arch/x86/kernel/cpu/bugs.c case SPECTRE_V2_USER_CMD_NONE: