CONFIG_ARCH_MULTI_V7 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)

configname: CONFIG_ARCH_MULTI_V7

Linux Kernel Configuration
└─>Platform selection
└─>ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)
In linux kernel since version 3.1 (release Date: 2011-10-24)  

depends
CONFIG_MMU

is selected by
CONFIG_ARCH_VIRT
CONFIG_ARCH_AIROHA
CONFIG_ARCH_RDA
CONFIG_ARCH_UNIPHIER
CONFIG_DEBUG_BCM2836
CONFIG_ARCH_HPE_GXP
CONFIG_SOC_VF610
CONFIG_VF_USE_ARM_GLOBAL_TIMER
CONFIG_ARCH_MVEBU
CONFIG_MACH_ARMADA_370
CONFIG_MACH_ARMADA_375
CONFIG_MACH_ARMADA_38X
CONFIG_MACH_ARMADA_39X
CONFIG_MACH_ARMADA_XP
CONFIG_MACH_DOVE
CONFIG_ARCH_BERLIN
CONFIG_ARCH_BCM_CYGNUS
CONFIG_ARCH_BCM_HR2
CONFIG_ARCH_BCM_NSP
CONFIG_ARCH_BCM_5301X
CONFIG_ARCH_BCM_281XX
CONFIG_ARCH_BCM_21664
CONFIG_ARCH_BCM_23550
CONFIG_ARCH_BCM2835
CONFIG_ARCH_BCM_53573
CONFIG_ARCH_BRCMSTB
CONFIG_ARCH_BCMBCA
CONFIG_ARCH_U8500
CONFIG_ARCH_MMP
CONFIG_MACH_MMP2_DT
CONFIG_MACH_MMP3_DT
CONFIG_ARCH_HIGHBANK
CONFIG_ARCH_SUNXI
CONFIG_MACH_SUN4I
CONFIG_MACH_SUN5I
CONFIG_MACH_SUN6I
CONFIG_MACH_SUN7I
CONFIG_MACH_SUN8I
CONFIG_MACH_SUN9I
CONFIG_ARCH_SUNXI_MC_SMP
CONFIG_ARCH_REALTEK
CONFIG_ARCH_NPCM
CONFIG_ARCH_NPCM7XX
CONFIG_ARCH_RENESAS
CONFIG_ARCH_STM32
CONFIG_MACH_STM32MP157
CONFIG_MACH_STM32MP13
CONFIG_ARCH_OMAP2
CONFIG_ARCH_OMAP3
CONFIG_ARCH_OMAP3
CONFIG_ARCH_OMAP4
CONFIG_ARCH_OMAP4
CONFIG_SOC_OMAP5
CONFIG_SOC_OMAP5
CONFIG_SOC_AM33XX
CONFIG_SOC_AM33XX
CONFIG_SOC_AM43XX
CONFIG_SOC_AM43XX
CONFIG_SOC_DRA7XX
CONFIG_SOC_DRA7XX
CONFIG_ARCH_OMAP2PLUS
CONFIG_OMAP_INTERCONNECT_BARRIER
CONFIG_ARCH_OMAP2PLUS_TYPICAL
CONFIG_POWER_AVS_OMAP
CONFIG_SOC_OMAP2420
CONFIG_SOC_OMAP2430
CONFIG_SOC_OMAP3430
CONFIG_MACH_NOKIA_N8X0
CONFIG_ARCH_STI
CONFIG_ARCH_MESON
CONFIG_ARCH_ROCKCHIP
CONFIG_ARCH_ACTIONS
CONFIG_PLAT_SPEAR
CONFIG_ARCH_SPEAR13XX
CONFIG_ARCH_S5PV210
CONFIG_ARCH_DIGICOLOR
CONFIG_ARCH_TEGRA
CONFIG_ARCH_REALVIEW
CONFIG_MACH_REALVIEW_PBX
CONFIG_ARCH_VEXPRESS
CONFIG_ARCH_ALPINE
CONFIG_ARCH_MEDIATEK
CONFIG_ARCH_MSTARV7
CONFIG_ARCH_AXXIA
CONFIG_ARCH_ZYNQ
CONFIG_MACH_ARTPEC6
CONFIG_ARCH_EXYNOS
CONFIG_ARCH_MILBEAUT
CONFIG_ARCH_WM8850
CONFIG_ARCH_INTEL_SOCFPGA
CONFIG_ARCH_QCOM
CONFIG_ARCH_ASPEED
CONFIG_MACH_ASPEED_G6
CONFIG_ARCH_KEYSTONE
CONFIG_ARCH_AT91
CONFIG_SOC_SAMA5D2
CONFIG_SOC_SAMA5D3
CONFIG_SOC_SAMA5D4
CONFIG_SOC_SAMA7G5
CONFIG_SOC_LAN966
CONFIG_ARCH_HISI
CONFIG_ARCH_HI3xxx
CONFIG_ARCH_HIP01
CONFIG_ARCH_HIP04
CONFIG_ARCH_HIX5HD2