On Wed, 2021-01-20 at 11:27 +0900, Hajime Tazaki wrote: > > diff --git a/arch/um/Kconfig b/arch/um/Kconfig > index 24c6596260de..5fb6a852d058 100644 > --- a/arch/um/Kconfig > +++ b/arch/um/Kconfig > @@ -29,6 +29,10 @@ config UMMODE_LIB > select UACCESS_MEMCPY > select ARCH_THREAD_STACK_ALLOCATOR > select ARCH_HAS_SYSCALL_WRAPPER > + select VFAT_FS > + select NLS_CODEPAGE_437 > + select NLS_ISO8859_1 > + select BTRFS_FS That doesn't really seem to make sense - the sample might need it, but generally LKL doesn't/shouldn't? johannes