查了一下：
│ Symbol: SND_EMU10K1 [=n] │
│ Type : tristate │
│ Defined at sound/pci/Kconfig:474 │
│ Prompt: Emu10k1 (SB Live!, Audigy, E-MU APS/0404/1010/1212/1616/1820) │
│ Depends on: SOUND [=m] && SND [=m] && SND_PCI [=y] && ZONE_DMA [=n] && HAS_IOPORT [=y] │
│ Location: │
│ -> Device Drivers │
│ -> Sound card support (SOUND [=m]) │
│ -> Advanced Linux Sound Architecture (SND [=m]) │
│ (2) -> PCI sound devices (SND_PCI [=y]) │
│ -> Emu10k1 (SB Live!, Audigy, E-MU APS/0404/1010/1212/1616/1820) (SND_EMU10K1 [=n]) │
│ Selects: FW_LOADER [=y] && SND_HWDEP [=m] && SND_RAWMIDI [=m] && SND_AC97_CODEC [=m] && SND_TIMER [=m] && SND_SEQ_DEVICE [=m] │
│ Symbol: ZONE_DMA [=n] │
│ Type : bool │
│ Defined at mm/Kconfig:1037 │
│ Prompt: Support DMA zone │
│ Visible if: ARCH_HAS_ZONE_DMA_SET [=n] │
│ Location: │
│ (1) -> Memory Management options │
│ -> Support DMA zone (ZONE_DMA [=n]) │
│ │
│ │
│ Symbol: ARCH_HAS_ZONE_DMA_SET [=n] │
│ Type : bool │
│ Defined at mm/Kconfig:1034 │
