CONFIG_UML is not available for thedefaultarchitecture x86.
Result is shown for architecture um

CONFIG_UML (not configurable)

configname: CONFIG_UML

Linux Kernel Configuration
└─>UML-specific options
└─>UML
In linux kernel since version 2.6.12  

is selected by
CONFIG_SND_PXA2XX_AC97
CONFIG_SND_PXA2XX_SOC_AC97
CONFIG_SND_PXA2XX_SOC_I2S
CONFIG_SND_PXA_SOC_SSP
CONFIG_SND_PXA2XX_SOC_CORGI
CONFIG_SND_PXA2XX_SOC_SPITZ
CONFIG_SND_PXA2XX_SOC_Z2
CONFIG_SND_PXA2XX_SOC_POODLE
CONFIG_SND_PXA2XX_SOC_TOSA
CONFIG_SND_PXA2XX_SOC_E740
CONFIG_SND_PXA2XX_SOC_E750
CONFIG_SND_PXA2XX_SOC_E800
CONFIG_SND_PXA2XX_SOC_EM_X270
CONFIG_SND_PXA2XX_SOC_PALM27X
CONFIG_SND_PXA910_SOC
CONFIG_SND_SOC_TTC_DKB
CONFIG_SND_SOC_ZYLONITE
CONFIG_SND_PXA2XX_SOC_HX4700
CONFIG_SND_PXA2XX_SOC_MAGICIAN
CONFIG_SND_PXA2XX_SOC_MIOA701
CONFIG_SND_PXA2XX_SOC_IMOTE2
CONFIG_SND_MMP_SOC_BROWNSTONE
CONFIG_SND_SOC_LPASS_CPU
CONFIG_SND_SOC_LPASS_PLATFORM
CONFIG_SND_SOC_LPASS_IPQ806X
CONFIG_SND_SOC_LPASS_APQ8016
CONFIG_SND_SOC_STORM
CONFIG_SND_SOC_APQ8016_SBC
CONFIG_SND_SOC_QDSP6_ASM_DAI
CONFIG_SND_SOC_QDSP6
CONFIG_SND_SOC_MSM8996
CONFIG_SND_SOC_SDM845
CONFIG_SND_SOC_ROCKCHIP_I2S
CONFIG_SND_SOC_ROCKCHIP_PDM
CONFIG_SND_SOC_ROCKCHIP_SPDIF
CONFIG_SND_SOC_ROCKCHIP_MAX98090
CONFIG_SND_SOC_ROCKCHIP_RT5645
CONFIG_SND_SOC_RK3288_HDMI_ANALOG
CONFIG_SND_SOC_RK3399_GRU_SOUND
CONFIG_SND_SOC_SAMSUNG
CONFIG_SND_S3C2412_SOC_I2S
CONFIG_SND_SAMSUNG_SPDIF
CONFIG_SND_SOC_SAMSUNG_NEO1973_WM8753
CONFIG_SND_SOC_SAMSUNG_JIVE_WM8750
CONFIG_SND_SOC_SAMSUNG_SMDK_WM8580
CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994
CONFIG_SND_SOC_SAMSUNG_S3C24XX_UDA134X
CONFIG_SND_SOC_SAMSUNG_SIMTEC_TLV320AIC23
CONFIG_SND_SOC_SAMSUNG_SIMTEC_HERMES
CONFIG_SND_SOC_SAMSUNG_H1940_UDA1380
CONFIG_SND_SOC_SAMSUNG_RX1950_UDA1380
CONFIG_SND_SOC_SMARTQ
CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF
CONFIG_SND_SOC_SMDK_WM8994_PCM
CONFIG_SND_SOC_SPEYSIDE
CONFIG_SND_SOC_TOBERMORY
CONFIG_SND_SOC_BELLS
CONFIG_SND_SOC_LOWLAND
CONFIG_SND_SOC_LITTLEMILL
CONFIG_SND_SOC_SNOW
CONFIG_SND_SOC_ODROID
CONFIG_SND_SOC_ARNDALE_RT5631_ALC5631
CONFIG_SND_SOC_SAMSUNG_TM2_WM5110
CONFIG_SND_SOC_SH4_HAC
CONFIG_SND_SOC_SH4_FSI
CONFIG_SND_SOC_SH4_SIU
CONFIG_SND_SOC_RCAR
CONFIG_SND_SH7760_AC97
CONFIG_SND_SIU_MIGOR
CONFIG_SND_SOC_SIRF
CONFIG_SND_SOC_SIRF_AUDIO
CONFIG_SND_SOC_SIRF_AUDIO_PORT
CONFIG_SND_SOC_SIRF_USP
CONFIG_SND_SOC_SOF_PCI
CONFIG_SND_SOC_SOF_ACPI
CONFIG_SND_SOC_SOF_OF
CONFIG_SND_SOC_SOF
CONFIG_SND_SOC_SOF_IMX8_SUPPORT
CONFIG_SND_SOC_SOF_INTEL_ACPI
CONFIG_SND_SOC_SOF_INTEL_PCI
CONFIG_SND_SOC_SOF_INTEL_ATOM_HIFI_EP
CONFIG_SND_SOC_SOF_INTEL_COMMON
CONFIG_SND_SOC_SOF_BAYTRAIL
CONFIG_SND_SOC_SOF_BROADWELL
CONFIG_SND_SOC_SOF_MERRIFIELD
CONFIG_SND_SOC_SOF_APOLLOLAKE
CONFIG_SND_SOC_SOF_GEMINILAKE
CONFIG_SND_SOC_SOF_CANNONLAKE
CONFIG_SND_SOC_SOF_COFFEELAKE
CONFIG_SND_SOC_SOF_ICELAKE
CONFIG_SND_SOC_SOF_COMETLAKE_LP
CONFIG_SND_SOC_SOF_COMETLAKE_H
CONFIG_SND_SOC_SOF_TIGERLAKE
CONFIG_SND_SOC_SOF_ELKHARTLAKE
CONFIG_SND_SOC_SOF_HDA_COMMON
CONFIG_SND_SOC_SOF_HDA_LINK
CONFIG_SND_SOC_SOF_HDA_LINK_BASELINE
CONFIG_SND_SOC_SOF_HDA
CONFIG_SND_SPEAR_SOC
CONFIG_SND_SOC_SPRD
CONFIG_SND_SOC_STI
CONFIG_SND_SOC_STM32_SAI
CONFIG_SND_SOC_STM32_I2S
CONFIG_SND_SOC_STM32_SPDIFRX
CONFIG_SND_SOC_STM32_DFSDM
CONFIG_SND_SUN4I_CODEC
CONFIG_SND_SUN8I_CODEC
CONFIG_SND_SUN8I_CODEC_ANALOG
CONFIG_SND_SUN50I_CODEC_ANALOG
CONFIG_SND_SUN4I_I2S
CONFIG_SND_SUN4I_SPDIF
CONFIG_SND_SUN8I_ADDA_PR_REGMAP
CONFIG_SND_SOC_TEGRA
CONFIG_SND_SOC_TEGRA20_AC97
CONFIG_SND_SOC_TEGRA20_I2S
CONFIG_SND_SOC_TEGRA30_I2S
CONFIG_SND_SOC_TEGRA_RT5640
CONFIG_SND_SOC_TEGRA_WM8753
CONFIG_SND_SOC_TEGRA_WM8903
CONFIG_SND_SOC_TEGRA_WM9712
CONFIG_SND_SOC_TEGRA_TRIMSLICE
CONFIG_SND_SOC_TEGRA_ALC5632
CONFIG_SND_SOC_TEGRA_MAX98090
CONFIG_SND_SOC_TEGRA_RT5677
CONFIG_SND_SOC_TEGRA_SGTL5000
CONFIG_SND_SOC_TI_EDMA_PCM
CONFIG_SND_SOC_TI_SDMA_PCM
CONFIG_SND_SOC_DAVINCI_ASP
CONFIG_SND_SOC_DAVINCI_MCASP
CONFIG_SND_SOC_DAVINCI_VCIF
CONFIG_SND_SOC_OMAP_DMIC
CONFIG_SND_SOC_OMAP_MCBSP
CONFIG_SND_SOC_OMAP_MCPDM
CONFIG_SND_SOC_NOKIA_N810
CONFIG_SND_SOC_NOKIA_RX51
CONFIG_SND_SOC_OMAP3_PANDORA
CONFIG_SND_SOC_OMAP3_TWL4030
CONFIG_SND_SOC_OMAP_ABE_TWL6040
CONFIG_SND_SOC_OMAP_AMS_DELTA
CONFIG_SND_SOC_OMAP_HDMI
CONFIG_SND_SOC_OMAP_OSK5912
CONFIG_SND_SOC_DAVINCI_EVM
CONFIG_SND_SOC_DM365_VOICE_CODEC_MODULE
CONFIG_SND_SOC_TXX9ACLC_AC97
CONFIG_SND_SOC_TXX9ACLC_GENERIC
CONFIG_SND_SOC_UNIPHIER_AIO
CONFIG_SND_SOC_UNIPHIER_LD11
CONFIG_SND_SOC_UNIPHIER_PXS2
CONFIG_SND_SOC_UNIPHIER_EVEA_CODEC
CONFIG_SND_SOC_UX500_PLAT_DMA
CONFIG_SND_SOC_UX500_MACH_MOP500
CONFIG_SND_SOC_XTFPGA_I2S
CONFIG_ZX_SPDIF
CONFIG_ZX_I2S
CONFIG_ZX_TDM
CONFIG_SND_SOC_ALL_CODECS
CONFIG_SND_SOC_WM_ADSP
CONFIG_SND_SOC_AC97_CODEC
CONFIG_SND_SOC_AD193X_SPI
CONFIG_SND_SOC_AD193X_I2C
CONFIG_SND_SOC_AD1980
CONFIG_SND_SOC_ADAU1373
CONFIG_SND_SOC_ADAU1701
CONFIG_SND_SOC_ADAU17X1
CONFIG_SND_SOC_ADAU1761
CONFIG_SND_SOC_ADAU1761_I2C
CONFIG_SND_SOC_ADAU1761_SPI
CONFIG_SND_SOC_ADAU1781
CONFIG_SND_SOC_ADAU1781_I2C
CONFIG_SND_SOC_ADAU1781_SPI
CONFIG_SND_SOC_ADAU1977_SPI
CONFIG_SND_SOC_ADAU1977_I2C
CONFIG_SND_SOC_ADAV801
CONFIG_SND_SOC_ADAV803
CONFIG_SND_SOC_AK4118
CONFIG_SND_SOC_AK4458
CONFIG_SND_SOC_AK5558
CONFIG_SND_SOC_CS42L51_I2C
CONFIG_SND_SOC_CS4265
CONFIG_SND_SOC_CS4271_I2C
CONFIG_SND_SOC_CS4271_SPI
CONFIG_SND_SOC_CS42XX8_I2C
CONFIG_SND_SOC_CS4341
CONFIG_SND_SOC_JZ4740_CODEC
CONFIG_SND_SOC_JZ4725B_CODEC
CONFIG_SND_SOC_HDMI_CODEC
CONFIG_SND_SOC_ES8328_I2C
CONFIG_SND_SOC_ES8328_SPI
CONFIG_SND_SOC_HDAC_HDMI
CONFIG_SND_SOC_HDAC_HDA
CONFIG_SND_SOC_INNO_RK3036
CONFIG_SND_SOC_MAX9860
CONFIG_SND_SOC_MSM8916_WCD_DIGITAL
CONFIG_SND_SOC_PCM1789_I2C
CONFIG_SND_SOC_PCM179X_I2C
CONFIG_SND_SOC_PCM179X_SPI
CONFIG_SND_SOC_PCM186X_I2C
CONFIG_SND_SOC_PCM186X_SPI
CONFIG_SND_SOC_PCM3060_I2C
CONFIG_SND_SOC_PCM3060_SPI
CONFIG_SND_SOC_PCM3168A_I2C
CONFIG_SND_SOC_PCM3168A_SPI
CONFIG_SND_SOC_PCM512x_I2C
CONFIG_SND_SOC_PCM512x_SPI
CONFIG_SND_SOC_RK3328
CONFIG_SND_SOC_RT5677
CONFIG_SND_SOC_SIGMADSP
CONFIG_SND_SOC_SIGMADSP_I2C
CONFIG_SND_SOC_SIGMADSP_REGMAP
CONFIG_SND_SOC_SIMPLE_AMPLIFIER
CONFIG_SND_SOC_SIRF_AUDIO_CODEC
CONFIG_SND_SOC_SSM2602_SPI
CONFIG_SND_SOC_SSM2602_I2C
CONFIG_SND_SOC_STA32X
CONFIG_SND_SOC_TDA7419
CONFIG_SND_SOC_TLV320AIC23_I2C
CONFIG_SND_SOC_TLV320AIC23_SPI
CONFIG_SND_SOC_TLV320AIC31XX
CONFIG_SND_SOC_TLV320AIC32X4_I2C
CONFIG_SND_SOC_TLV320AIC32X4_SPI
CONFIG_SND_SOC_TSCS42XX
CONFIG_SND_SOC_TSCS454
CONFIG_SND_SOC_TWL4030
CONFIG_SND_SOC_WCD9335
CONFIG_SND_SOC_WM8804_I2C
CONFIG_SND_SOC_WM8804_SPI
CONFIG_SND_SOC_WM9705
CONFIG_SND_SOC_WM9712
CONFIG_SND_SOC_WM9713
CONFIG_SND_SOC_ZX_AUD96P22
CONFIG_SND_SOC_MAX9759
CONFIG_SND_SIMPLE_CARD
CONFIG_SND_AUDIO_GRAPH_CARD
CONFIG_HDMI_LPE_AUDIO
CONFIG_SND_XEN_FRONTEND
CONFIG_RTC_CLASS
CONFIG_INTEL_IOATDMA