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It enables initramfs support, printk, TTY/PTY, ELF binary support, scripts with shebang (#!) execution, and pseudo filesystems. This configuration is intended for VM testing and experimentation with ultra-minimal environments, providing a middle ground between tinyconfig and standard defconfig. Signed-off-by: Emir YILDIRIM --- v2: - Mention initramfs support in commit message - Improve wording and formatting --- arch/x86/configs/tiny_defconfig | 91 +++++++++++++++++++++++++++++++++ init/Kconfig | 6 +++ 2 files changed, 97 insertions(+) create mode 100644 arch/x86/configs/tiny_defconfig diff --git a/arch/x86/configs/tiny_defconfig b/arch/x86/configs/tiny_defcon= fig new file mode 100644 index 000000000..d5a96b15f --- /dev/null +++ b/arch/x86/configs/tiny_defconfig @@ -0,0 +1,91 @@ +# CONFIG_LOCALVERSION_AUTO is not set +CONFIG_KERNEL_XZ=3Dy +# CONFIG_CROSS_MEMORY_ATTACH is not set +# CONFIG_PREEMPT_DYNAMIC is not set +CONFIG_BLK_DEV_INITRD=3Dy +# CONFIG_RD_GZIP is not set +# CONFIG_RD_BZIP2 is not set +# CONFIG_RD_LZMA is not set +# CONFIG_RD_XZ is not set +# CONFIG_RD_LZO is not set +# CONFIG_RD_LZ4 is not set +# CONFIG_RD_ZSTD is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=3Dy +CONFIG_EXPERT=3Dy +# CONFIG_MULTIUSER is not set +# CONFIG_SGETMASK_SYSCALL is not set +# CONFIG_FHANDLE is not set +# CONFIG_POSIX_TIMERS is not set +# CONFIG_BUG is not set +# CONFIG_PCSPKR_PLATFORM is not set +# CONFIG_FUTEX is not set +# CONFIG_EPOLL is not set +# CONFIG_SIGNALFD is not set +# CONFIG_TIMERFD is not set +# CONFIG_EVENTFD is not set +# CONFIG_SHMEM is not set +# CONFIG_AIO is not set +# CONFIG_IO_URING is not set +# CONFIG_ADVISE_SYSCALLS is not set +# CONFIG_MEMBARRIER is not set +# CONFIG_RSEQ is not set +# CONFIG_CACHESTAT_SYSCALL is not set +# CONFIG_KALLSYMS is not set +# CONFIG_64BIT is not set +# CONFIG_X86_EXTENDED_PLATFORM is not set +# CONFIG_SCHED_OMIT_FRAME_POINTER is not set +# CONFIG_DMI is not set +# CONFIG_X86_MCE is not set +# CONFIG_PERF_EVENTS_AMD_UNCORE is not set +# CONFIG_X86_IOPL_IOPERM is not set +# CONFIG_MTRR is not set +# CONFIG_X86_UMIP is not set +# CONFIG_RELOCATABLE is not set +# CONFIG_MODIFY_LDT_SYSCALL is not set +# CONFIG_X86_BUS_LOCK_DETECT is not set +# CONFIG_CPU_MITIGATIONS is not set +# CONFIG_SUSPEND is not set +# CONFIG_ACPI is not set +# CONFIG_VIRTUALIZATION is not set +# CONFIG_SECCOMP is not set +# CONFIG_STACKPROTECTOR is not set +# CONFIG_COMPAT_32BIT_TIME is not set +# CONFIG_RANDOMIZE_KSTACK_OFFSET is not set +# CONFIG_BLOCK is not set +# CONFIG_COREDUMP is not set +CONFIG_SLUB_TINY=3Dy +# CONFIG_COMPAT_BRK is not set +# CONFIG_COMPACTION is not set +# CONFIG_ZONE_DMA is not set +# CONFIG_VM_EVENT_COUNTERS is not set +# CONFIG_SECRETMEM is not set +CONFIG_DEVTMPFS=3Dy +# CONFIG_STANDALONE is not set +# CONFIG_PREVENT_FIRMWARE_BUILD is not set +# CONFIG_FW_LOADER is not set +# CONFIG_ALLOW_DEV_COREDUMP is not set +# CONFIG_FIRMWARE_MEMMAP is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_DEVMEM is not set +# CONFIG_DEVPORT is not set +# CONFIG_HWMON is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_VIRTIO_MENU is not set +# CONFIG_VHOST_MENU is not set +# CONFIG_SURFACE_PLATFORMS is not set +# CONFIG_X86_PLATFORM_DEVICES is not set +# CONFIG_IOMMU_SUPPORT is not set +# CONFIG_FILE_LOCKING is not set +# CONFIG_DNOTIFY is not set +# CONFIG_INOTIFY_USER is not set +# CONFIG_MISC_FILESYSTEMS is not set +# CONFIG_CRC_OPTIMIZATIONS is not set +# CONFIG_SYMBOLIC_ERRNAME is not set +# CONFIG_DEBUG_MISC is not set +# CONFIG_SECTION_MISMATCH_WARN_ONLY is not set +# CONFIG_FTRACE is not set +# CONFIG_X86_VERBOSE_BOOTUP is not set +# CONFIG_EARLY_PRINTK is not set +# CONFIG_X86_DEBUG_FPU is not set +CONFIG_UNWINDER_GUESS=3Dy +# CONFIG_RUNTIME_TESTING_MENU is not set diff --git a/init/Kconfig b/init/Kconfig index 2937c4d30..7f4f02128 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -2296,3 +2296,9 @@ config ARCH_HAS_SYNC_CORE_BEFORE_USERMODE # . config ARCH_HAS_SYSCALL_WRAPPER def_bool n + +config TINY_DEFCONFIG + bool "Tiny yet usable kernel configuration" + help + A minimal but bootable configuration intended for + testing and development in virtual machines. --=20 2.47.3