New MINIMAL kernel config. The goal with this configuration is to
only compile in those options in GENERIC that cannot be loaded as modules. ufs is still included because many of its options aren't present in the kernel module. There's some other exceptions documented in the file. This is part of some work to get more things automatically loading in the hopes of obsoleting GENERIC one day.
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Warner Losh
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sys/amd64/conf/MINIMAL
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sys/amd64/conf/MINIMAL
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#
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# MINIMAL -- Mostly Minimal kernel configuration file for FreeBSD/amd64
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#
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# Many definitions of minimal are possible. The one this file follows is
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# GENERIC, minus all functionality that can be replaced by loading kernel
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# modules.
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#
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# Exceptions:
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# o While UFS is buildable as a module, the current module lacks
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# some features (ACL, GJOURNAL) that GENERIC includes.
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# o acpi as a module has been reported flakey and not well tested, so
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# is included in the kernel.
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# o random is included due to uncertaty...
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# o Many networking things are included
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#
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# For now, please run changes to these list past imp@freebsd.org
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#
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# For more information on this file, please read the config(5) manual page,
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# and/or the handbook section on Kernel Configuration Files:
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#
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# http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
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#
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# The handbook is also available locally in /usr/share/doc/handbook
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# if you've installed the doc distribution, otherwise always see the
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# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
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# latest information.
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#
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# An exhaustive list of options and more detailed explanations of the
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# device lines is also present in the ../../conf/NOTES and NOTES files.
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# If you are in doubt as to the purpose or necessity of a line, check first
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# in NOTES.
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#
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# $FreeBSD$
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cpu HAMMER
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ident MINIMAL
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makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
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makeoptions WITH_CTF=1 # Run ctfconvert(1) for DTrace support
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options SCHED_ULE # ULE scheduler
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options PREEMPTION # Enable kernel thread preemption
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options INET # InterNETworking
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options INET6 # IPv6 communications protocols
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options TCP_OFFLOAD # TCP offload
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options SCTP # Stream Control Transmission Protocol
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options FFS # Berkeley Fast Filesystem
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options SOFTUPDATES # Enable FFS soft updates support
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options UFS_ACL # Support for access control lists
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options UFS_DIRHASH # Improve performance on big directories
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options UFS_GJOURNAL # Enable gjournal-based UFS journaling
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options QUOTA # Enable disk quotas for UFS
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options MD_ROOT # MD is a potential root device
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options COMPAT_FREEBSD32 # Compatible with i386 binaries
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options COMPAT_FREEBSD4 # Compatible with FreeBSD4
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options COMPAT_FREEBSD5 # Compatible with FreeBSD5
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options COMPAT_FREEBSD6 # Compatible with FreeBSD6
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options COMPAT_FREEBSD7 # Compatible with FreeBSD7
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options COMPAT_FREEBSD9 # Compatible with FreeBSD9
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options COMPAT_FREEBSD10 # Compatible with FreeBSD10
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options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
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options KTRACE # ktrace(1) support
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options STACK # stack(9) support
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options SYSVSHM # SYSV-style shared memory
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options SYSVMSG # SYSV-style message queues
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options SYSVSEM # SYSV-style semaphores
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options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
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options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
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options KBD_INSTALL_CDEV # install a CDEV entry in /dev
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options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
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options AUDIT # Security event auditing
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options CAPABILITY_MODE # Capsicum capability mode
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options CAPABILITIES # Capsicum capabilities
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options MAC # TrustedBSD MAC Framework
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options KDTRACE_FRAME # Ensure frames are compiled in
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options KDTRACE_HOOKS # Kernel DTrace hooks
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options DDB_CTF # Kernel ELF linker loads CTF data
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options INCLUDE_CONFIG_FILE # Include this file in kernel
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# Debugging support. Always need this:
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options KDB # Enable kernel debugger support.
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options KDB_TRACE # Print a stack trace for a panic.
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# For full debugger support use (turn off in stable branch):
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options DDB # Support DDB.
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options GDB # Support remote GDB.
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options DEADLKRES # Enable the deadlock resolver
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options INVARIANTS # Enable calls of extra sanity checking
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options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
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options WITNESS # Enable checks to detect deadlocks and cycles
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options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
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options MALLOC_DEBUG_MAXZONES=8 # Separate malloc(9) zones
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# Make an SMP-capable kernel by default
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options SMP # Symmetric MultiProcessor Kernel
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# CPU frequency control
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device cpufreq
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# Bus support.
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device acpi
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options ACPI_DMAR
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device pci
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# atkbdc0 controls both the keyboard and the PS/2 mouse
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device atkbdc # AT keyboard controller
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device atkbd # AT keyboard
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device psm # PS/2 mouse
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device kbdmux # keyboard multiplexer
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device vga # VGA video card driver
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options VESA # Add support for VESA BIOS Extensions (VBE)
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device splash # Splash screen and screen saver support
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# syscons is the default console driver, resembling an SCO console
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device sc
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options SC_PIXEL_MODE # add support for the raster text mode
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# vt is the new video console driver
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device vt
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device vt_vga
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device vt_efifb
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device agp # support several AGP chipsets
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# Pseudo devices.
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device loop # Network loopback
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device random # Entropy device
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device padlock_rng # VIA Padlock RNG
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device rdrand_rng # Intel Bull Mountain RNG
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device ether # Ethernet support
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device vlan # 802.1Q VLAN support
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device tun # Packet tunnel.
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device gif # IPv6 and IPv4 tunneling
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# The `bpf' device enables the Berkeley Packet Filter.
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# Be aware of the administrative consequences of enabling this!
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# Note that 'bpf' is required for DHCP.
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device bpf # Berkeley packet filter
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# Xen HVM Guest Optimizations
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# NOTE: XENHVM depends on xenpci. They must be added or removed together.
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options XENHVM # Xen HVM kernel infrastructure
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device xenpci # Xen HVM Hypervisor services driver
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