[RFC] Get rid of SUBARCH

[RFC] Get rid of SUBARCH

[Richard Weinberger]

This series is an attempt to remove the SUBARCH make parameter.
It as introduced at the times of Linux 2.5 for UML to tell the UML
build system what the real architecture is.

But we actually don't need SUBARCH, we can store this information
in the .config file.
i386_defconfig will produce a kernel for x86, and x86_64_defconfig
for x86_64. There is no need to specify SUBARCH.
With this patchset applied you can build UML always with "make linux ARCH=um"
and it will produce the an image for the architecture specified in your .config.
Currenlty "make linux ARCH=um" will alter your .config to match the detected SUBARCH
whith sucks and causes problems on automated build systems.

The series touches also m68k, sh, mips and unicore32.
These architectures magically select a cross compiler if ARCH != SUBARCH.
Do really need that behavior?

[PATCH 1/8] um: Create defconfigs for i386 and x86_64
[PATCH 2/8] um: Do not use SUBARCH
[PATCH 3/8] um: Remove old defconfig
[PATCH 4/8] m68k: Do not use SUBARCH
[PATCH 5/8] sh: Do not use SUBARCH
[PATCH 6/8] mips: Do not use SUBARCH
[PATCH 7/8] unicore32: Do not use SUBARCH
[PATCH 8/8] Makefile: Remove SUBARCH

Thanks,
//richard

[PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Richard Weinberger]

Instead of having one defconfig for both i386 and x86_64
we have now two.
This is the first step to get rid of SUBARCH.

This patch is based on: https://lkml.org/lkml/2013/7/4/396

Cc: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/um/configs/i386_defconfig   | 954 +++++++++++++++++++++++++++++++++++++++
 arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 1897 insertions(+)
 create mode 100644 arch/um/configs/i386_defconfig
 create mode 100644 arch/um/configs/x86_64_defconfig

diff --git a/arch/um/configs/i386_defconfig b/arch/um/configs/i386_defconfig
new file mode 100644
index 0000000..488ac2a
--- /dev/null
+++ b/arch/um/configs/i386_defconfig
@@ -0,0 +1,954 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# User Mode Linux 3.9.0-rc6 Kernel Configuration
+#
+CONFIG_DEFCONFIG_LIST="arch/$ARCH/defconfig"
+CONFIG_UML=y
+CONFIG_MMU=y
+CONFIG_NO_IOMEM=y
+# CONFIG_TRACE_IRQFLAGS_SUPPORT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+# CONFIG_STACKTRACE_SUPPORT is not set
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_HZ\x100
+
+#
+# UML-specific options
+#
+
+#
+# Host processor type and features
+#
+# CONFIG_M486 is not set
+# CONFIG_M586 is not set
+# CONFIG_M586TSC is not set
+# CONFIG_M586MMX is not set
+CONFIG_M686=y
+# CONFIG_MPENTIUMII is not set
+# CONFIG_MPENTIUMIII is not set
+# CONFIG_MPENTIUMM is not set
+# CONFIG_MPENTIUM4 is not set
+# CONFIG_MK6 is not set
+# CONFIG_MK7 is not set
+# CONFIG_MK8 is not set
+# CONFIG_MCRUSOE is not set
+# CONFIG_MEFFICEON is not set
+# CONFIG_MWINCHIPC6 is not set
+# CONFIG_MWINCHIP3D is not set
+# CONFIG_MELAN is not set
+# CONFIG_MGEODEGX1 is not set
+# CONFIG_MGEODE_LX is not set
+# CONFIG_MCYRIXIII is not set
+# CONFIG_MVIAC3_2 is not set
+# CONFIG_MVIAC7 is not set
+# CONFIG_MPSC is not set
+# CONFIG_MCORE2 is not set
+# CONFIG_MATOM is not set
+# CONFIG_GENERIC_CPU is not set
+# CONFIG_X86_GENERIC is not set
+CONFIG_X86_INTERNODE_CACHE_SHIFT=5
+CONFIG_X86_L1_CACHE_SHIFT=5
+# CONFIG_X86_PPRO_FENCE is not set
+CONFIG_X86_USE_PPRO_CHECKSUM=y
+CONFIG_X86_TSC=y
+CONFIG_X86_CMPXCHG64=y
+CONFIG_X86_CMOV=y
+CONFIG_X86_MINIMUM_CPU_FAMILY=5
+CONFIG_CPU_SUP_INTEL=y
+CONFIG_CPU_SUP_AMD=y
+CONFIG_CPU_SUP_CENTAUR=y
+CONFIG_CPU_SUP_TRANSMETA_32=y
+CONFIG_UML_X86=y
+# CONFIG_64BIT is not set
+CONFIG_X86_32=y
+# CONFIG_X86_64 is not set
+# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
+CONFIG_RWSEM_GENERIC_SPINLOCK=y
+# CONFIG_3_LEVEL_PGTABLES is not set
+CONFIG_ARCH_HAS_SC_SIGNALS=y
+CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y
+CONFIG_GENERIC_HWEIGHT=y
+# CONFIG_STATIC_LINK is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_COMPACTION is not set
+# CONFIG_PHYS_ADDR_T_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=0
+# CONFIG_KSM is not set
+CONFIG_DEFAULT_MMAP_MIN_ADDR@96
+CONFIG_CROSS_MEMORY_ATTACH=y
+CONFIG_NEED_PER_CPU_KM=y
+# CONFIG_CLEANCACHE is not set
+# CONFIG_FRONTSWAP is not set
+CONFIG_LD_SCRIPT_DYN=y
+CONFIG_BINFMT_ELF=y
+CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
+CONFIG_HAVE_AOUT=y
+# CONFIG_BINFMT_AOUT is not set
+CONFIG_BINFMT_MISC=m
+CONFIG_COREDUMP=y
+CONFIG_HOSTFS=y
+# CONFIG_HPPFS is not set
+CONFIG_MCONSOLE=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_KERNEL_STACK_ORDER=1
+# CONFIG_MMAPPER is not set
+CONFIG_NO_DMA=y
+CONFIG_IRQ_WORK=y
+
+#
+# General setup
+#
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT\x128
+CONFIG_CROSS_COMPILE=""
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_DEFAULT_HOSTNAME="(none)"
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+# CONFIG_FHANDLE is not set
+# CONFIG_AUDIT is not set
+CONFIG_HAVE_GENERIC_HARDIRQS=y
+
+#
+# IRQ subsystem
+#
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_IRQ_SHOW=y
+# CONFIG_ALWAYS_USE_PERSISTENT_CLOCK is not set
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+
+#
+# Timers subsystem
+#
+CONFIG_TICK_ONESHOT=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+
+#
+# CPU/Task time and stats accounting
+#
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+# CONFIG_TASKSTATS is not set
+
+#
+# RCU Subsystem
+#
+CONFIG_TINY_RCU=y
+# CONFIG_PREEMPT_RCU is not set
+# CONFIG_RCU_STALL_COMMON is not set
+# CONFIG_TREE_RCU_TRACE is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT\x14
+CONFIG_CGROUPS=y
+# CONFIG_CGROUP_DEBUG is not set
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CPUSETS=y
+CONFIG_PROC_PID_CPUSET=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_RESOURCE_COUNTERS=y
+# CONFIG_MEMCG is not set
+CONFIG_CGROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+# CONFIG_CFS_BANDWIDTH is not set
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_BLK_CGROUP=y
+# CONFIG_DEBUG_BLK_CGROUP is not set
+# CONFIG_CHECKPOINT_RESTORE is not set
+CONFIG_NAMESPACES=y
+CONFIG_UTS_NS=y
+CONFIG_IPC_NS=y
+# CONFIG_USER_NS is not set
+# CONFIG_PID_NS is not set
+CONFIG_NET_NS=y
+CONFIG_UIDGID_CONVERTED=y
+# CONFIG_UIDGID_STRICT_TYPE_CHECKS is not set
+# CONFIG_SCHED_AUTOGROUP is not set
+CONFIG_SYSFS_DEPRECATED=y
+# CONFIG_SYSFS_DEPRECATED_V2 is not set
+# CONFIG_RELAY is not set
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
+# CONFIG_EXPERT is not set
+CONFIG_HAVE_UID16=y
+CONFIG_UID16=y
+# CONFIG_SYSCTL_SYSCALL is not set
+CONFIG_KALLSYMS=y
+# CONFIG_KALLSYMS_ALL is not set
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+# CONFIG_EMBEDDED is not set
+
+#
+# Kernel Performance Events And Counters
+#
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_COMPAT_BRK=y
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_OLD_SIGACTION=y
+
+#
+# GCOV-based kernel profiling
+#
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+# CONFIG_MODULE_SIG is not set
+CONFIG_BLOCK=y
+CONFIG_LBDAF=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_BSGLIB is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+# CONFIG_BLK_DEV_THROTTLING is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+CONFIG_EFI_PARTITION=y
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=m
+# CONFIG_CFQ_GROUP_IOSCHED is not set
+CONFIG_DEFAULT_DEADLINE=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="deadline"
+CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
+CONFIG_INLINE_READ_UNLOCK=y
+CONFIG_INLINE_READ_UNLOCK_IRQ=y
+CONFIG_INLINE_WRITE_UNLOCK=y
+CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
+CONFIG_FREEZER=y
+
+#
+# UML Character Devices
+#
+CONFIG_STDERR_CONSOLE=y
+CONFIG_STDIO_CONSOLE=y
+CONFIG_SSL=y
+CONFIG_NULL_CHAN=y
+CONFIG_PORT_CHAN=y
+CONFIG_PTY_CHAN=y
+CONFIG_TTY_CHAN=y
+CONFIG_XTERM_CHAN=y
+# CONFIG_NOCONFIG_CHAN is not set
+CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
+CONFIG_CON_CHAN="xterm"
+CONFIG_SSL_CHAN="pts"
+CONFIG_UML_SOUND=m
+CONFIG_SOUND=m
+CONFIG_SOUND_OSS_CORE=y
+CONFIG_HOSTAUDIO=m
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+CONFIG_FIRMWARE_IN_KERNEL=y
+CONFIG_EXTRA_FIRMWARE=""
+CONFIG_FW_LOADER_USER_HELPER=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_GENERIC_CPU_DEVICES=y
+# CONFIG_DMA_SHARED_BUFFER is not set
+
+#
+# Bus devices
+#
+# CONFIG_CONNECTOR is not set
+# CONFIG_MTD is not set
+CONFIG_BLK_DEV=y
+CONFIG_BLK_DEV_UBD=y
+# CONFIG_BLK_DEV_UBD_SYNC is not set
+CONFIG_BLK_DEV_COW_COMMON=y
+CONFIG_BLK_DEV_LOOP=m
+CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
+# CONFIG_BLK_DEV_CRYPTOLOOP is not set
+# CONFIG_BLK_DEV_DRBD is not set
+CONFIG_BLK_DEV_NBD=m
+# CONFIG_BLK_DEV_RAM is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_BLK_DEV_RBD is not set
+
+#
+# Misc devices
+#
+# CONFIG_ENCLOSURE_SERVICES is not set
+# CONFIG_C2PORT is not set
+
+#
+# EEPROM support
+#
+# CONFIG_EEPROM_93CX6 is not set
+
+#
+# Texas Instruments shared transport line discipline
+#
+
+#
+# Altera FPGA firmware download module
+#
+
+#
+# SCSI device support
+#
+CONFIG_SCSI_MOD=y
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_MD is not set
+CONFIG_NETDEVICES=y
+CONFIG_NET_CORE=y
+# CONFIG_BONDING is not set
+CONFIG_DUMMY=m
+# CONFIG_EQUALIZER is not set
+# CONFIG_MII is not set
+# CONFIG_NET_TEAM is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_VXLAN is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+CONFIG_TUN=m
+# CONFIG_VETH is not set
+
+#
+# CAIF transport drivers
+#
+
+#
+# Distributed Switch Architecture drivers
+#
+# CONFIG_NET_DSA_MV88E6XXX is not set
+# CONFIG_NET_DSA_MV88E6060 is not set
+# CONFIG_NET_DSA_MV88E6XXX_NEED_PPU is not set
+# CONFIG_NET_DSA_MV88E6131 is not set
+# CONFIG_NET_DSA_MV88E6123_61_65 is not set
+CONFIG_ETHERNET=y
+CONFIG_NET_VENDOR_INTEL=y
+CONFIG_NET_VENDOR_I825XX=y
+CONFIG_NET_VENDOR_MARVELL=y
+# CONFIG_MVMDIO is not set
+CONFIG_NET_VENDOR_NATSEMI=y
+CONFIG_NET_VENDOR_8390=y
+# CONFIG_PHYLIB is not set
+CONFIG_PPP=m
+# CONFIG_PPP_BSDCOMP is not set
+# CONFIG_PPP_DEFLATE is not set
+# CONFIG_PPP_FILTER is not set
+# CONFIG_PPP_MPPE is not set
+# CONFIG_PPP_MULTILINK is not set
+# CONFIG_PPPOE is not set
+# CONFIG_PPP_ASYNC is not set
+# CONFIG_PPP_SYNC_TTY is not set
+CONFIG_SLIP=m
+CONFIG_SLHC=m
+# CONFIG_SLIP_COMPRESSED is not set
+# CONFIG_SLIP_SMART is not set
+# CONFIG_SLIP_MODE_SLIP6 is not set
+CONFIG_WLAN=y
+# CONFIG_HOSTAP is not set
+# CONFIG_WL_TI is not set
+
+#
+# Enable WiMAX (Networking options) to see the WiMAX drivers
+#
+# CONFIG_WAN is not set
+
+#
+# Character devices
+#
+CONFIG_TTY=y
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT2
+# CONFIG_N_GSM is not set
+# CONFIG_TRACE_SINK is not set
+CONFIG_DEVKMEM=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_UML_RANDOM=y
+# CONFIG_R3964 is not set
+# CONFIG_NSC_GPIO is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_I2C is not set
+# CONFIG_HSI is not set
+
+#
+# PPS support
+#
+# CONFIG_PPS is not set
+
+#
+# PPS generators support
+#
+
+#
+# PTP clock support
+#
+# CONFIG_PTP_1588_CLOCK is not set
+
+#
+# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
+#
+# CONFIG_PTP_1588_CLOCK_PCH is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_POWER_AVS is not set
+# CONFIG_THERMAL is not set
+# CONFIG_WATCHDOG is not set
+# CONFIG_REGULATOR is not set
+CONFIG_SOUND_OSS_CORE_PRECLAIM=y
+# CONFIG_USB_ARCH_HAS_OHCI is not set
+# CONFIG_USB_ARCH_HAS_EHCI is not set
+# CONFIG_USB_ARCH_HAS_XHCI is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_UIO is not set
+
+#
+# Virtio drivers
+#
+
+#
+# Microsoft Hyper-V guest support
+#
+# CONFIG_STAGING is not set
+
+#
+# Hardware Spinlock drivers
+#
+# CONFIG_MAILBOX is not set
+CONFIG_IOMMU_SUPPORT=y
+
+#
+# Remoteproc drivers
+#
+
+#
+# Rpmsg drivers
+#
+# CONFIG_VIRT_DRIVERS is not set
+# CONFIG_PM_DEVFREQ is not set
+# CONFIG_EXTCON is not set
+# CONFIG_MEMORY is not set
+# CONFIG_IIO is not set
+# CONFIG_PWM is not set
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_DIAG is not set
+CONFIG_UNIX=y
+# CONFIG_UNIX_DIAG is not set
+CONFIG_XFRM=y
+# CONFIG_XFRM_USER is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+# CONFIG_XFRM_MIGRATE is not set
+# CONFIG_XFRM_STATISTICS is not set
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE_DEMUX is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_NET_IPVTI is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+CONFIG_INET_XFRM_MODE_TRANSPORT=y
+CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=y
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_INET_UDP_DIAG is not set
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_RDS is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_L2TP is not set
+# CONFIG_BRIDGE is not set
+CONFIG_HAVE_NET_DSA=y
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_PHONET is not set
+# CONFIG_IEEE802154 is not set
+# CONFIG_NET_SCHED is not set
+# CONFIG_DCB is not set
+# CONFIG_BATMAN_ADV is not set
+# CONFIG_OPENVSWITCH is not set
+# CONFIG_VSOCKETS is not set
+# CONFIG_NETPRIO_CGROUP is not set
+CONFIG_BQL=y
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+CONFIG_WIRELESS=y
+# CONFIG_CFG80211 is not set
+# CONFIG_LIB80211 is not set
+
+#
+# CFG80211 needs to be enabled for MAC80211
+#
+# CONFIG_WIMAX is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+# CONFIG_CAIF is not set
+# CONFIG_CEPH_LIB is not set
+# CONFIG_NFC is not set
+
+#
+# UML Network Devices
+#
+CONFIG_UML_NET=y
+CONFIG_UML_NET_ETHERTAP=y
+CONFIG_UML_NET_TUNTAP=y
+CONFIG_UML_NET_SLIP=y
+CONFIG_UML_NET_DAEMON=y
+# CONFIG_UML_NET_VDE is not set
+CONFIG_UML_NET_MCAST=y
+# CONFIG_UML_NET_PCAP is not set
+CONFIG_UML_NET_SLIRP=y
+
+#
+# File systems
+#
+# CONFIG_EXT2_FS is not set
+# CONFIG_EXT3_FS is not set
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_USE_FOR_EXT23=y
+# CONFIG_EXT4_FS_POSIX_ACL is not set
+# CONFIG_EXT4_FS_SECURITY is not set
+# CONFIG_EXT4_DEBUG is not set
+CONFIG_JBD2=y
+CONFIG_FS_MBCACHE=y
+CONFIG_REISERFS_FS=y
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_REISERFS_PROC_INFO is not set
+# CONFIG_REISERFS_FS_XATTR is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_BTRFS_FS is not set
+# CONFIG_NILFS2_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+CONFIG_FILE_LOCKING=y
+CONFIG_FSNOTIFY=y
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_FANOTIFY is not set
+CONFIG_QUOTA=y
+# CONFIG_QUOTA_NETLINK_INTERFACE is not set
+CONFIG_PRINT_QUOTA_WARNING=y
+# CONFIG_QUOTA_DEBUG is not set
+# CONFIG_QFMT_V1 is not set
+# CONFIG_QFMT_V2 is not set
+CONFIG_QUOTACTL=y
+CONFIG_AUTOFS4_FS=m
+# CONFIG_FUSE_FS is not set
+
+#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+CONFIG_ISO9660_FS=m
+CONFIG_JOLIET=y
+# CONFIG_ZISOFS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_TMPFS_XATTR is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+CONFIG_MISC_FILESYSTEMS=y
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_LOGFS is not set
+# CONFIG_CRAMFS is not set
+# CONFIG_SQUASHFS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_QNX6FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_PSTORE is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+# CONFIG_F2FS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+# CONFIG_NFS_FS is not set
+# CONFIG_NFSD is not set
+# CONFIG_CEPH_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+CONFIG_NLS=y
+CONFIG_NLS_DEFAULT="iso8859-1"
+# CONFIG_NLS_CODEPAGE_437 is not set
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_ASCII is not set
+# CONFIG_NLS_ISO8859_1 is not set
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_MAC_ROMAN is not set
+# CONFIG_NLS_MAC_CELTIC is not set
+# CONFIG_NLS_MAC_CENTEURO is not set
+# CONFIG_NLS_MAC_CROATIAN is not set
+# CONFIG_NLS_MAC_CYRILLIC is not set
+# CONFIG_NLS_MAC_GAELIC is not set
+# CONFIG_NLS_MAC_GREEK is not set
+# CONFIG_NLS_MAC_ICELAND is not set
+# CONFIG_NLS_MAC_INUIT is not set
+# CONFIG_NLS_MAC_ROMANIAN is not set
+# CONFIG_NLS_MAC_TURKISH is not set
+# CONFIG_NLS_UTF8 is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY_DMESG_RESTRICT is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_SECURITY=""
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+# CONFIG_CRYPTO_FIPS is not set
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_ALGAPI2=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_RNG=m
+CONFIG_CRYPTO_RNG2=m
+# CONFIG_CRYPTO_MANAGER is not set
+# CONFIG_CRYPTO_MANAGER2 is not set
+# CONFIG_CRYPTO_USER is not set
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+# CONFIG_CRYPTO_CBC is not set
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+# CONFIG_CRYPTO_ECB is not set
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_PCBC is not set
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+# CONFIG_CRYPTO_VMAC is not set
+
+#
+# Digest
+#
+CONFIG_CRYPTO_CRC32C=y
+# CONFIG_CRYPTO_CRC32 is not set
+# CONFIG_CRYPTO_GHASH is not set
+# CONFIG_CRYPTO_MD4 is not set
+# CONFIG_CRYPTO_MD5 is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+CONFIG_CRYPTO_AES=y
+# CONFIG_CRYPTO_AES_586 is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+# CONFIG_CRYPTO_DES is not set
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SALSA20_586 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+# CONFIG_CRYPTO_TWOFISH_586 is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_ZLIB is not set
+# CONFIG_CRYPTO_LZO is not set
+
+#
+# Random Number Generation
+#
+CONFIG_CRYPTO_ANSI_CPRNG=m
+# CONFIG_CRYPTO_USER_API_HASH is not set
+# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_BINARY_PRINTF is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+CONFIG_GENERIC_FIND_FIRST_BIT=y
+CONFIG_GENERIC_IO=y
+# CONFIG_CRC_CCITT is not set
+CONFIG_CRC16=y
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC32_SELFTEST is not set
+CONFIG_CRC32_SLICEBY8=y
+# CONFIG_CRC32_SLICEBY4 is not set
+# CONFIG_CRC32_SARWATE is not set
+# CONFIG_CRC32_BIT is not set
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+# CONFIG_CRC8 is not set
+# CONFIG_XZ_DEC is not set
+# CONFIG_XZ_DEC_BCJ is not set
+CONFIG_DQL=y
+CONFIG_NLATTR=y
+# CONFIG_AVERAGE is not set
+# CONFIG_CORDIC is not set
+# CONFIG_DDR is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN\x1024
+# CONFIG_STRIP_ASM_SYMS is not set
+# CONFIG_READABLE_ASM is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_DEBUG_SECTION_MISMATCH is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+# CONFIG_LOCKUP_DETECTOR is not set
+# CONFIG_PANIC_ON_OOPS is not set
+CONFIG_PANIC_ON_OOPS_VALUE=0
+# CONFIG_DETECT_HUNG_TASK is not set
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_ATOMIC_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_DEBUG_INFO_REDUCED is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+CONFIG_DEBUG_MEMORY_INIT=y
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_TEST_LIST_SORT is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
+CONFIG_FRAME_POINTER=y
+# CONFIG_BOOT_PRINTK_DELAY is not set
+
+#
+# RCU Debugging
+#
+# CONFIG_SPARSE_RCU_POINTER is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_TRACE is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+# CONFIG_NOTIFIER_ERROR_INJECTION is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_RBTREE_TEST is not set
+# CONFIG_INTERVAL_TREE_TEST is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_TEST_KSTRTOX is not set
+# CONFIG_GPROF is not set
+# CONFIG_GCOV is not set
+CONFIG_EARLY_PRINTK=y
diff --git a/arch/um/configs/x86_64_defconfig b/arch/um/configs/x86_64_defconfig
new file mode 100644
index 0000000..66a38c6
--- /dev/null
+++ b/arch/um/configs/x86_64_defconfig
@@ -0,0 +1,943 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# User Mode Linux 3.9.0-rc6 Kernel Configuration
+#
+CONFIG_DEFCONFIG_LIST="arch/$ARCH/defconfig"
+CONFIG_UML=y
+CONFIG_MMU=y
+CONFIG_NO_IOMEM=y
+# CONFIG_TRACE_IRQFLAGS_SUPPORT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+# CONFIG_STACKTRACE_SUPPORT is not set
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_BUG=y
+CONFIG_HZ\x100
+
+#
+# UML-specific options
+#
+
+#
+# Host processor type and features
+#
+# CONFIG_M486 is not set
+# CONFIG_M586 is not set
+# CONFIG_M586TSC is not set
+# CONFIG_M586MMX is not set
+# CONFIG_M686 is not set
+# CONFIG_MPENTIUMII is not set
+# CONFIG_MPENTIUMIII is not set
+# CONFIG_MPENTIUMM is not set
+# CONFIG_MPENTIUM4 is not set
+# CONFIG_MK6 is not set
+# CONFIG_MK7 is not set
+# CONFIG_MK8 is not set
+# CONFIG_MCRUSOE is not set
+# CONFIG_MEFFICEON is not set
+# CONFIG_MWINCHIPC6 is not set
+# CONFIG_MWINCHIP3D is not set
+# CONFIG_MELAN is not set
+# CONFIG_MGEODEGX1 is not set
+# CONFIG_MGEODE_LX is not set
+# CONFIG_MCYRIXIII is not set
+# CONFIG_MVIAC3_2 is not set
+# CONFIG_MVIAC7 is not set
+# CONFIG_MPSC is not set
+# CONFIG_MCORE2 is not set
+# CONFIG_MATOM is not set
+CONFIG_GENERIC_CPU=y
+CONFIG_X86_INTERNODE_CACHE_SHIFT=6
+CONFIG_X86_L1_CACHE_SHIFT=6
+CONFIG_X86_TSC=y
+CONFIG_X86_CMPXCHG64=y
+CONFIG_X86_CMOV=y
+CONFIG_X86_MINIMUM_CPU_FAMILYd
+CONFIG_CPU_SUP_INTEL=y
+CONFIG_CPU_SUP_AMD=y
+CONFIG_CPU_SUP_CENTAUR=y
+CONFIG_UML_X86=y
+CONFIG_64BIT=y
+# CONFIG_X86_32 is not set
+CONFIG_X86_64=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
+CONFIG_3_LEVEL_PGTABLES=y
+# CONFIG_ARCH_HAS_SC_SIGNALS is not set
+# CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA is not set
+CONFIG_GENERIC_HWEIGHT=y
+# CONFIG_STATIC_LINK is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+# CONFIG_COMPACTION is not set
+CONFIG_PHYS_ADDR_T_64BIT=y
+CONFIG_ZONE_DMA_FLAG=0
+# CONFIG_KSM is not set
+CONFIG_DEFAULT_MMAP_MIN_ADDR@96
+CONFIG_CROSS_MEMORY_ATTACH=y
+CONFIG_NEED_PER_CPU_KM=y
+# CONFIG_CLEANCACHE is not set
+# CONFIG_FRONTSWAP is not set
+CONFIG_LD_SCRIPT_DYN=y
+CONFIG_BINFMT_ELF=y
+CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
+# CONFIG_HAVE_AOUT is not set
+CONFIG_BINFMT_MISC=m
+CONFIG_COREDUMP=y
+CONFIG_HOSTFS=y
+# CONFIG_HPPFS is not set
+CONFIG_MCONSOLE=y
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_KERNEL_STACK_ORDER=1
+# CONFIG_MMAPPER is not set
+CONFIG_NO_DMA=y
+CONFIG_IRQ_WORK=y
+
+#
+# General setup
+#
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT\x128
+CONFIG_CROSS_COMPILE=""
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_DEFAULT_HOSTNAME="(none)"
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+CONFIG_POSIX_MQUEUE_SYSCTL=y
+# CONFIG_FHANDLE is not set
+# CONFIG_AUDIT is not set
+CONFIG_HAVE_GENERIC_HARDIRQS=y
+
+#
+# IRQ subsystem
+#
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_IRQ_SHOW=y
+# CONFIG_ALWAYS_USE_PERSISTENT_CLOCK is not set
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+
+#
+# Timers subsystem
+#
+CONFIG_TICK_ONESHOT=y
+CONFIG_NO_HZ=y
+CONFIG_HIGH_RES_TIMERS=y
+
+#
+# CPU/Task time and stats accounting
+#
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+# CONFIG_TASKSTATS is not set
+
+#
+# RCU Subsystem
+#
+CONFIG_TINY_RCU=y
+# CONFIG_PREEMPT_RCU is not set
+# CONFIG_RCU_STALL_COMMON is not set
+# CONFIG_TREE_RCU_TRACE is not set
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_LOG_BUF_SHIFT\x14
+CONFIG_CGROUPS=y
+# CONFIG_CGROUP_DEBUG is not set
+CONFIG_CGROUP_FREEZER=y
+CONFIG_CGROUP_DEVICE=y
+CONFIG_CPUSETS=y
+CONFIG_PROC_PID_CPUSET=y
+CONFIG_CGROUP_CPUACCT=y
+CONFIG_RESOURCE_COUNTERS=y
+# CONFIG_MEMCG is not set
+CONFIG_CGROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+# CONFIG_CFS_BANDWIDTH is not set
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_BLK_CGROUP=y
+# CONFIG_DEBUG_BLK_CGROUP is not set
+# CONFIG_CHECKPOINT_RESTORE is not set
+CONFIG_NAMESPACES=y
+CONFIG_UTS_NS=y
+CONFIG_IPC_NS=y
+# CONFIG_USER_NS is not set
+# CONFIG_PID_NS is not set
+CONFIG_NET_NS=y
+CONFIG_UIDGID_CONVERTED=y
+# CONFIG_UIDGID_STRICT_TYPE_CHECKS is not set
+# CONFIG_SCHED_AUTOGROUP is not set
+CONFIG_SYSFS_DEPRECATED=y
+# CONFIG_SYSFS_DEPRECATED_V2 is not set
+# CONFIG_RELAY is not set
+# CONFIG_BLK_DEV_INITRD is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_SYSCTL=y
+CONFIG_ANON_INODES=y
+# CONFIG_EXPERT is not set
+CONFIG_HAVE_UID16=y
+CONFIG_UID16=y
+# CONFIG_SYSCTL_SYSCALL is not set
+CONFIG_KALLSYMS=y
+# CONFIG_KALLSYMS_ALL is not set
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_AIO=y
+# CONFIG_EMBEDDED is not set
+
+#
+# Kernel Performance Events And Counters
+#
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_COMPAT_BRK=y
+CONFIG_SLAB=y
+# CONFIG_SLUB is not set
+# CONFIG_PROFILING is not set
+CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y
+CONFIG_MODULES_USE_ELF_RELA=y
+
+#
+# GCOV-based kernel profiling
+#
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+# CONFIG_MODULE_SIG is not set
+CONFIG_BLOCK=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_BSGLIB is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+# CONFIG_BLK_DEV_THROTTLING is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+CONFIG_EFI_PARTITION=y
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=m
+# CONFIG_CFQ_GROUP_IOSCHED is not set
+CONFIG_DEFAULT_DEADLINE=y
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="deadline"
+CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
+CONFIG_INLINE_READ_UNLOCK=y
+CONFIG_INLINE_READ_UNLOCK_IRQ=y
+CONFIG_INLINE_WRITE_UNLOCK=y
+CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
+CONFIG_FREEZER=y
+
+#
+# UML Character Devices
+#
+CONFIG_STDERR_CONSOLE=y
+CONFIG_STDIO_CONSOLE=y
+CONFIG_SSL=y
+CONFIG_NULL_CHAN=y
+CONFIG_PORT_CHAN=y
+CONFIG_PTY_CHAN=y
+CONFIG_TTY_CHAN=y
+CONFIG_XTERM_CHAN=y
+# CONFIG_NOCONFIG_CHAN is not set
+CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
+CONFIG_CON_CHAN="xterm"
+CONFIG_SSL_CHAN="pts"
+CONFIG_UML_SOUND=m
+CONFIG_SOUND=m
+CONFIG_SOUND_OSS_CORE=y
+CONFIG_HOSTAUDIO=m
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+CONFIG_FIRMWARE_IN_KERNEL=y
+CONFIG_EXTRA_FIRMWARE=""
+CONFIG_FW_LOADER_USER_HELPER=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_GENERIC_CPU_DEVICES=y
+# CONFIG_DMA_SHARED_BUFFER is not set
+
+#
+# Bus devices
+#
+# CONFIG_CONNECTOR is not set
+# CONFIG_MTD is not set
+CONFIG_BLK_DEV=y
+CONFIG_BLK_DEV_UBD=y
+# CONFIG_BLK_DEV_UBD_SYNC is not set
+CONFIG_BLK_DEV_COW_COMMON=y
+CONFIG_BLK_DEV_LOOP=m
+CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
+# CONFIG_BLK_DEV_CRYPTOLOOP is not set
+# CONFIG_BLK_DEV_DRBD is not set
+CONFIG_BLK_DEV_NBD=m
+# CONFIG_BLK_DEV_RAM is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_BLK_DEV_RBD is not set
+
+#
+# Misc devices
+#
+# CONFIG_ENCLOSURE_SERVICES is not set
+# CONFIG_C2PORT is not set
+
+#
+# EEPROM support
+#
+# CONFIG_EEPROM_93CX6 is not set
+
+#
+# Texas Instruments shared transport line discipline
+#
+
+#
+# Altera FPGA firmware download module
+#
+
+#
+# SCSI device support
+#
+CONFIG_SCSI_MOD=y
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_MD is not set
+CONFIG_NETDEVICES=y
+CONFIG_NET_CORE=y
+# CONFIG_BONDING is not set
+CONFIG_DUMMY=m
+# CONFIG_EQUALIZER is not set
+# CONFIG_MII is not set
+# CONFIG_NET_TEAM is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_VXLAN is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+CONFIG_TUN=m
+# CONFIG_VETH is not set
+
+#
+# CAIF transport drivers
+#
+
+#
+# Distributed Switch Architecture drivers
+#
+# CONFIG_NET_DSA_MV88E6XXX is not set
+# CONFIG_NET_DSA_MV88E6060 is not set
+# CONFIG_NET_DSA_MV88E6XXX_NEED_PPU is not set
+# CONFIG_NET_DSA_MV88E6131 is not set
+# CONFIG_NET_DSA_MV88E6123_61_65 is not set
+CONFIG_ETHERNET=y
+CONFIG_NET_VENDOR_INTEL=y
+CONFIG_NET_VENDOR_I825XX=y
+CONFIG_NET_VENDOR_MARVELL=y
+# CONFIG_MVMDIO is not set
+CONFIG_NET_VENDOR_NATSEMI=y
+CONFIG_NET_VENDOR_8390=y
+# CONFIG_PHYLIB is not set
+CONFIG_PPP=m
+# CONFIG_PPP_BSDCOMP is not set
+# CONFIG_PPP_DEFLATE is not set
+# CONFIG_PPP_FILTER is not set
+# CONFIG_PPP_MPPE is not set
+# CONFIG_PPP_MULTILINK is not set
+# CONFIG_PPPOE is not set
+# CONFIG_PPP_ASYNC is not set
+# CONFIG_PPP_SYNC_TTY is not set
+CONFIG_SLIP=m
+CONFIG_SLHC=m
+# CONFIG_SLIP_COMPRESSED is not set
+# CONFIG_SLIP_SMART is not set
+# CONFIG_SLIP_MODE_SLIP6 is not set
+CONFIG_WLAN=y
+# CONFIG_HOSTAP is not set
+# CONFIG_WL_TI is not set
+
+#
+# Enable WiMAX (Networking options) to see the WiMAX drivers
+#
+# CONFIG_WAN is not set
+
+#
+# Character devices
+#
+CONFIG_TTY=y
+CONFIG_UNIX98_PTYS=y
+# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT2
+# CONFIG_N_GSM is not set
+# CONFIG_TRACE_SINK is not set
+CONFIG_DEVKMEM=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_UML_RANDOM=y
+# CONFIG_R3964 is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_I2C is not set
+# CONFIG_HSI is not set
+
+#
+# PPS support
+#
+# CONFIG_PPS is not set
+
+#
+# PPS generators support
+#
+
+#
+# PTP clock support
+#
+# CONFIG_PTP_1588_CLOCK is not set
+
+#
+# Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.
+#
+# CONFIG_PTP_1588_CLOCK_PCH is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_POWER_AVS is not set
+# CONFIG_THERMAL is not set
+# CONFIG_WATCHDOG is not set
+# CONFIG_REGULATOR is not set
+CONFIG_SOUND_OSS_CORE_PRECLAIM=y
+# CONFIG_USB_ARCH_HAS_OHCI is not set
+# CONFIG_USB_ARCH_HAS_EHCI is not set
+# CONFIG_USB_ARCH_HAS_XHCI is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_AUXDISPLAY is not set
+# CONFIG_UIO is not set
+
+#
+# Virtio drivers
+#
+
+#
+# Microsoft Hyper-V guest support
+#
+# CONFIG_STAGING is not set
+
+#
+# Hardware Spinlock drivers
+#
+# CONFIG_MAILBOX is not set
+CONFIG_IOMMU_SUPPORT=y
+
+#
+# Remoteproc drivers
+#
+
+#
+# Rpmsg drivers
+#
+# CONFIG_VIRT_DRIVERS is not set
+# CONFIG_PM_DEVFREQ is not set
+# CONFIG_EXTCON is not set
+# CONFIG_MEMORY is not set
+# CONFIG_IIO is not set
+# CONFIG_PWM is not set
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_DIAG is not set
+CONFIG_UNIX=y
+# CONFIG_UNIX_DIAG is not set
+CONFIG_XFRM=y
+# CONFIG_XFRM_USER is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+# CONFIG_XFRM_MIGRATE is not set
+# CONFIG_XFRM_STATISTICS is not set
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+# CONFIG_IP_PNP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE_DEMUX is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_NET_IPVTI is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+CONFIG_INET_XFRM_MODE_TRANSPORT=y
+CONFIG_INET_XFRM_MODE_TUNNEL=y
+CONFIG_INET_XFRM_MODE_BEET=y
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_INET_UDP_DIAG is not set
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_RDS is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_L2TP is not set
+# CONFIG_BRIDGE is not set
+CONFIG_HAVE_NET_DSA=y
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_PHONET is not set
+# CONFIG_IEEE802154 is not set
+# CONFIG_NET_SCHED is not set
+# CONFIG_DCB is not set
+# CONFIG_BATMAN_ADV is not set
+# CONFIG_OPENVSWITCH is not set
+# CONFIG_VSOCKETS is not set
+# CONFIG_NETPRIO_CGROUP is not set
+CONFIG_BQL=y
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+CONFIG_WIRELESS=y
+# CONFIG_CFG80211 is not set
+# CONFIG_LIB80211 is not set
+
+#
+# CFG80211 needs to be enabled for MAC80211
+#
+# CONFIG_WIMAX is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+# CONFIG_CAIF is not set
+# CONFIG_CEPH_LIB is not set
+# CONFIG_NFC is not set
+
+#
+# UML Network Devices
+#
+CONFIG_UML_NET=y
+CONFIG_UML_NET_ETHERTAP=y
+CONFIG_UML_NET_TUNTAP=y
+CONFIG_UML_NET_SLIP=y
+CONFIG_UML_NET_DAEMON=y
+# CONFIG_UML_NET_VDE is not set
+CONFIG_UML_NET_MCAST=y
+# CONFIG_UML_NET_PCAP is not set
+CONFIG_UML_NET_SLIRP=y
+
+#
+# File systems
+#
+# CONFIG_EXT2_FS is not set
+# CONFIG_EXT3_FS is not set
+CONFIG_EXT4_FS=y
+CONFIG_EXT4_USE_FOR_EXT23=y
+# CONFIG_EXT4_FS_POSIX_ACL is not set
+# CONFIG_EXT4_FS_SECURITY is not set
+# CONFIG_EXT4_DEBUG is not set
+CONFIG_JBD2=y
+CONFIG_FS_MBCACHE=y
+CONFIG_REISERFS_FS=y
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_REISERFS_PROC_INFO is not set
+# CONFIG_REISERFS_FS_XATTR is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_GFS2_FS is not set
+# CONFIG_BTRFS_FS is not set
+# CONFIG_NILFS2_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+CONFIG_FILE_LOCKING=y
+CONFIG_FSNOTIFY=y
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_FANOTIFY is not set
+CONFIG_QUOTA=y
+# CONFIG_QUOTA_NETLINK_INTERFACE is not set
+CONFIG_PRINT_QUOTA_WARNING=y
+# CONFIG_QUOTA_DEBUG is not set
+# CONFIG_QFMT_V1 is not set
+# CONFIG_QFMT_V2 is not set
+CONFIG_QUOTACTL=y
+CONFIG_AUTOFS4_FS=m
+# CONFIG_FUSE_FS is not set
+
+#
+# Caches
+#
+# CONFIG_FSCACHE is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+CONFIG_ISO9660_FS=m
+CONFIG_JOLIET=y
+# CONFIG_ZISOFS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_TMPFS_XATTR is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+CONFIG_MISC_FILESYSTEMS=y
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_LOGFS is not set
+# CONFIG_CRAMFS is not set
+# CONFIG_SQUASHFS is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_QNX6FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_PSTORE is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+# CONFIG_F2FS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+# CONFIG_NFS_FS is not set
+# CONFIG_NFSD is not set
+# CONFIG_CEPH_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+CONFIG_NLS=y
+CONFIG_NLS_DEFAULT="iso8859-1"
+# CONFIG_NLS_CODEPAGE_437 is not set
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+# CONFIG_NLS_CODEPAGE_850 is not set
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_CODEPAGE_1250 is not set
+# CONFIG_NLS_CODEPAGE_1251 is not set
+# CONFIG_NLS_ASCII is not set
+# CONFIG_NLS_ISO8859_1 is not set
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+# CONFIG_NLS_ISO8859_15 is not set
+# CONFIG_NLS_KOI8_R is not set
+# CONFIG_NLS_KOI8_U is not set
+# CONFIG_NLS_MAC_ROMAN is not set
+# CONFIG_NLS_MAC_CELTIC is not set
+# CONFIG_NLS_MAC_CENTEURO is not set
+# CONFIG_NLS_MAC_CROATIAN is not set
+# CONFIG_NLS_MAC_CYRILLIC is not set
+# CONFIG_NLS_MAC_GAELIC is not set
+# CONFIG_NLS_MAC_GREEK is not set
+# CONFIG_NLS_MAC_ICELAND is not set
+# CONFIG_NLS_MAC_INUIT is not set
+# CONFIG_NLS_MAC_ROMANIAN is not set
+# CONFIG_NLS_MAC_TURKISH is not set
+# CONFIG_NLS_UTF8 is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY_DMESG_RESTRICT is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITYFS is not set
+CONFIG_DEFAULT_SECURITY_DAC=y
+CONFIG_DEFAULT_SECURITY=""
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+# CONFIG_CRYPTO_FIPS is not set
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_ALGAPI2=y
+CONFIG_CRYPTO_HASH=y
+CONFIG_CRYPTO_HASH2=y
+CONFIG_CRYPTO_RNG=m
+CONFIG_CRYPTO_RNG2=m
+# CONFIG_CRYPTO_MANAGER is not set
+# CONFIG_CRYPTO_MANAGER2 is not set
+# CONFIG_CRYPTO_USER is not set
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+# CONFIG_CRYPTO_CBC is not set
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+# CONFIG_CRYPTO_ECB is not set
+# CONFIG_CRYPTO_LRW is not set
+# CONFIG_CRYPTO_PCBC is not set
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+# CONFIG_CRYPTO_VMAC is not set
+
+#
+# Digest
+#
+CONFIG_CRYPTO_CRC32C=y
+# CONFIG_CRYPTO_CRC32 is not set
+# CONFIG_CRYPTO_GHASH is not set
+# CONFIG_CRYPTO_MD4 is not set
+# CONFIG_CRYPTO_MD5 is not set
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+CONFIG_CRYPTO_AES=y
+# CONFIG_CRYPTO_AES_X86_64 is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+# CONFIG_CRYPTO_DES is not set
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SALSA20_X86_64 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+# CONFIG_CRYPTO_TWOFISH_X86_64 is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_ZLIB is not set
+# CONFIG_CRYPTO_LZO is not set
+
+#
+# Random Number Generation
+#
+CONFIG_CRYPTO_ANSI_CPRNG=m
+# CONFIG_CRYPTO_USER_API_HASH is not set
+# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_BINARY_PRINTF is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+CONFIG_GENERIC_FIND_FIRST_BIT=y
+CONFIG_GENERIC_IO=y
+# CONFIG_CRC_CCITT is not set
+CONFIG_CRC16=y
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC32_SELFTEST is not set
+CONFIG_CRC32_SLICEBY8=y
+# CONFIG_CRC32_SLICEBY4 is not set
+# CONFIG_CRC32_SARWATE is not set
+# CONFIG_CRC32_BIT is not set
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+# CONFIG_CRC8 is not set
+# CONFIG_XZ_DEC is not set
+# CONFIG_XZ_DEC_BCJ is not set
+CONFIG_DQL=y
+CONFIG_NLATTR=y
+# CONFIG_AVERAGE is not set
+# CONFIG_CORDIC is not set
+# CONFIG_DDR is not set
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN\x1024
+# CONFIG_STRIP_ASM_SYMS is not set
+# CONFIG_READABLE_ASM is not set
+# CONFIG_UNUSED_SYMBOLS is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_DEBUG_SECTION_MISMATCH is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+# CONFIG_LOCKUP_DETECTOR is not set
+# CONFIG_PANIC_ON_OOPS is not set
+CONFIG_PANIC_ON_OOPS_VALUE=0
+# CONFIG_DETECT_HUNG_TASK is not set
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_DEBUG_SLAB is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_ATOMIC_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_INFO=y
+# CONFIG_DEBUG_INFO_REDUCED is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+CONFIG_DEBUG_MEMORY_INIT=y
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_TEST_LIST_SORT is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_DEBUG_NOTIFIERS is not set
+# CONFIG_DEBUG_CREDENTIALS is not set
+CONFIG_FRAME_POINTER=y
+# CONFIG_BOOT_PRINTK_DELAY is not set
+
+#
+# RCU Debugging
+#
+# CONFIG_SPARSE_RCU_POINTER is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_RCU_TRACE is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
+# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
+# CONFIG_NOTIFIER_ERROR_INJECTION is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_RBTREE_TEST is not set
+# CONFIG_INTERVAL_TREE_TEST is not set
+# CONFIG_ATOMIC64_SELFTEST is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_TEST_KSTRTOX is not set
+# CONFIG_GPROF is not set
+# CONFIG_GCOV is not set
+CONFIG_EARLY_PRINTK=y
-- 
1.8.1.4

Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Stephen Rothwell]

[-- Attachment #1: Type: text/plain, Size: 1191 bytes --]

Hi Richard,

On Wed, 21 Aug 2013 10:19:25 +0200 Richard Weinberger <richard@nod.at> wrote:
>
> Instead of having one defconfig for both i386 and x86_64
> we have now two.
> This is the first step to get rid of SUBARCH.
> 
> This patch is based on: https://lkml.org/lkml/2013/7/4/396
> 
> Cc: Ramkumar Ramachandra <artagnon@gmail.com>
> Signed-off-by: Richard Weinberger <richard@nod.at>
> ---
>  arch/um/configs/i386_defconfig   | 954 +++++++++++++++++++++++++++++++++++++++
>  arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++++++++++++++
>  2 files changed, 1897 insertions(+)
>  create mode 100644 arch/um/configs/i386_defconfig
>  create mode 100644 arch/um/configs/x86_64_defconfig

Can these still work if put through "make savedefconfig" like other
architectures defconfig files?  I did a test and they produce files that
are only 74-75 lines long and the resulting files produced the
same .config when used in place of their originals.  But I only did that
test on an X86_64 host, so I just don't know if there is some strangeness
of um that would stop us using them.

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

[-- Attachment #2: Type: application/pgp-signature, Size: 836 bytes --]

Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Ramkumar Ramachandra]

Richard Weinberger wrote:
> This patch is based on: https://lkml.org/lkml/2013/7/4/396
>
> Cc: Ramkumar Ramachandra <artagnon@gmail.com>
> Signed-off-by: Richard Weinberger <richard@nod.at>
> ---
>  arch/um/configs/i386_defconfig   | 954 +++++++++++++++++++++++++++++++++++++++
>  arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++++++++++++++
>  2 files changed, 1897 insertions(+)
>  create mode 100644 arch/um/configs/i386_defconfig
>  create mode 100644 arch/um/configs/x86_64_defconfig

First, I'm pissed that the upstream tree doesn't build and run out of
the box months after I submitted a fix in July (and it's September
now). Fact that you dropped my sane patches aside and decided to write
a much larger series aside, user-mode Linux in upstream is broken.
This means that any user who does:

$ ARCH=um make defconfig
$ ARCH=um make

will end up with a *broken* Linux _today_. Unless the user is living
in the Stone Age with a 32-bit computer, this is what she will see
when she attempts to boot up Linux:

$ file linux
linux: ELF 32-bit LSB  executable, Intel 80386, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not
stripped
$ ./linux ubd0=busybox-rootfs
[...]
Kernel panic - not syncing: No init found.  Try passing init= option
to kernel. See Linux Documentation/init.txt for guidance.
CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc2-00083-g4b97280 #1
0b869fbc 08272f87 0b869fdc 0820c5cd 00000001 00000000 00000000 00000000
       0b869fe8 0820c126 08252593 0b869ff8 08059317 00000000 00000001 00000000
       00000000 0b869f94:  [<0805a11c>] show_stack+0x54/0x8c
0b869fb4:  [<0820e3c8>] dump_stack+0x16/0x1b
0b869fc8:  [<0820c5cd>] panic+0x67/0x149
0b869fe0:  [<0820c126>] kernel_init+0xab/0xaf
0b869fec:  [<08059317>] new_thread_handler+0x63/0x7c
0b869ffc:  [<00000000>] 0x0


EIP: 0023:[<f7717430>] CPU: 0 Not tainted ESP: 002b:ffc386dc EFLAGS: 00000296
    Not tainted
EAX: 00000000 EBX: 000063ba ECX: 00000013 EDX: 000063ba
ESI: 000063b6 EDI: 00000002 EBP: ffc38708 DS: 002b ES: 002b
0b869f44:  [<0806aff4>] show_regs+0xb4/0xbc
0b869f70:  [<0805b23b>] panic_exit+0x20/0x36
0b869f84:  [<0808521b>] notifier_call_chain+0x28/0x4b
0b869fac:  [<0808526c>] atomic_notifier_call_chain+0x15/0x17
0b869fbc:  [<0820c5de>] panic+0x78/0x149
0b869fe0:  [<0820c126>] kernel_init+0xab/0xaf
0b869fec:  [<08059317>] new_thread_handler+0x63/0x7c
0b869ffc:  [<00000000>] 0x0

[1]    25526 abort (core dumped)  linux ubd0=busybox-rootfs
                                                           %

Rubbish.

When I rebase my original patches (exactly 2 small independent
patches) onto the new upstream, stuff works as usual. If you're not
convinced, try the um-build branch from
https://github.com/artagnon/linux for yourself.

Are you against accepting good patches and stalling work? What is your
plan exactly?

Annoyed,
Ram

Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Richard Weinberger]

Am 26.09.2013 12:20, schrieb Ramkumar Ramachandra:
> Richard Weinberger wrote:
>> This patch is based on: https://lkml.org/lkml/2013/7/4/396
>>
>> Cc: Ramkumar Ramachandra <artagnon@gmail.com>
>> Signed-off-by: Richard Weinberger <richard@nod.at>
>> ---
>>  arch/um/configs/i386_defconfig   | 954 +++++++++++++++++++++++++++++++++++++++
>>  arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++++++++++++++
>>  2 files changed, 1897 insertions(+)
>>  create mode 100644 arch/um/configs/i386_defconfig
>>  create mode 100644 arch/um/configs/x86_64_defconfig
> 
> First, I'm pissed that the upstream tree doesn't build and run out of
> the box months after I submitted a fix in July (and it's September
> now). Fact that you dropped my sane patches aside and decided to write
> a much larger series aside, user-mode Linux in upstream is broken.
> This means that any user who does:
> 
> $ ARCH=um make defconfig
> $ ARCH=um make
> 
> will end up with a *broken* Linux _today_. Unless the user is living
> in the Stone Age with a 32-bit computer, this is what she will see
> when she attempts to boot up Linux:

Not here.

> $ file linux
> linux: ELF 32-bit LSB  executable, Intel 80386, version 1 (SYSV),
> dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not
> stripped
> $ ./linux ubd0=busybox-rootfs
> [...]
> Kernel panic - not syncing: No init found.  Try passing init= option
> to kernel. See Linux Documentation/init.txt for guidance.

I don't know that rootfs but it looks like there is no init.

> CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc2-00083-g4b97280 #1
> 0b869fbc 08272f87 0b869fdc 0820c5cd 00000001 00000000 00000000 00000000
>        0b869fe8 0820c126 08252593 0b869ff8 08059317 00000000 00000001 00000000
>        00000000 0b869f94:  [<0805a11c>] show_stack+0x54/0x8c
> 0b869fb4:  [<0820e3c8>] dump_stack+0x16/0x1b
> 0b869fc8:  [<0820c5cd>] panic+0x67/0x149
> 0b869fe0:  [<0820c126>] kernel_init+0xab/0xaf
> 0b869fec:  [<08059317>] new_thread_handler+0x63/0x7c
> 0b869ffc:  [<00000000>] 0x0
> 
> 
> EIP: 0023:[<f7717430>] CPU: 0 Not tainted ESP: 002b:ffc386dc EFLAGS: 00000296
>     Not tainted
> EAX: 00000000 EBX: 000063ba ECX: 00000013 EDX: 000063ba
> ESI: 000063b6 EDI: 00000002 EBP: ffc38708 DS: 002b ES: 002b
> 0b869f44:  [<0806aff4>] show_regs+0xb4/0xbc
> 0b869f70:  [<0805b23b>] panic_exit+0x20/0x36
> 0b869f84:  [<0808521b>] notifier_call_chain+0x28/0x4b
> 0b869fac:  [<0808526c>] atomic_notifier_call_chain+0x15/0x17
> 0b869fbc:  [<0820c5de>] panic+0x78/0x149
> 0b869fe0:  [<0820c126>] kernel_init+0xab/0xaf
> 0b869fec:  [<08059317>] new_thread_handler+0x63/0x7c
> 0b869ffc:  [<00000000>] 0x0
> 
> [1]    25526 abort (core dumped)  linux ubd0=busybox-rootfs
>                                                            %
> 
> Rubbish.

UML core dumps at panic() by design.

> When I rebase my original patches (exactly 2 small independent
> patches) onto the new upstream, stuff works as usual. If you're not
> convinced, try the um-build branch from
> https://github.com/artagnon/linux for yourself.

> Are you against accepting good patches and stalling work? What is your
> plan exactly?

Sure, my great plan is to destroy Linux. I work for Microsoft. ;-)

Seriously, my plan is to get rid of SUBARCH, that's why I did not push your patches
upstream and I've send the rid of SUBARCH patch series.
It turned out that other archs depend on SUBARCH too therefore some more thinking is needed.
Time passed, merge window closed, $dayjob needed some attention...

That said, your "arch/um: make it work with defconfig and x86_64" patch is also not perfect.
"make defconfig ARCH=um SUBARCH=x86" will create x86_64 defconfig, which is wrong and breaks existing
setups.
Secondly, what stops you from running "make defconfig ARCH=um SUBARCH=x86_64" to run your x86_64 bit
userspace?

Thanks,
//richard

Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Ramkumar Ramachandra]

Richard Weinberger wrote:
>> $ file linux
>> linux: ELF 32-bit LSB  executable, Intel 80386, version 1 (SYSV),
>> dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not
>> stripped
>> $ ./linux ubd0=busybox-rootfs
>> [...]
>> Kernel panic - not syncing: No init found.  Try passing init= option
>> to kernel. See Linux Documentation/init.txt for guidance.
>
> I don't know that rootfs but it looks like there is no init.

Ofcourse there's an init on the busybox-rootfs, and I'm able to boot
it with an x86_64 Linux. The reason for panic is incorrect: I think
(although not sure) a 32-bit rootfs userland will work.

>> [1]    25526 abort (core dumped)  linux ubd0=busybox-rootfs
>>                                                            %
>>
>> Rubbish.
>
> UML core dumps at panic() by design.

On a related note, why does it screw up my terminal? I have to `reset`
to get a nice working terminal.

> Seriously, my plan is to get rid of SUBARCH, that's why I did not push your patches
> upstream and I've send the rid of SUBARCH patch series.
> It turned out that other archs depend on SUBARCH too therefore some more thinking is needed.
> Time passed, merge window closed, $dayjob needed some attention...

Don't let some grand plan stall reasonable patches that fix immediate problems.

> That said, your "arch/um: make it work with defconfig and x86_64" patch is also not perfect.
> "make defconfig ARCH=um SUBARCH=x86" will create x86_64 defconfig, which is wrong and breaks existing
> setups.

Wrong.

  $ make defconfig ARCH=um SUBARCH=i386
  *** Default configuration is based on 'i386_defconfig'
  #
  # configuration written to .config
  #

I can build a 32-bit kernel just fine with my patch applied.

Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Richard Weinberger]

Am 26.09.2013 13:57, schrieb Ramkumar Ramachandra:
> Richard Weinberger wrote:
>>> $ file linux
>>> linux: ELF 32-bit LSB  executable, Intel 80386, version 1 (SYSV),
>>> dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not
>>> stripped
>>> $ ./linux ubd0=busybox-rootfs
>>> [...]
>>> Kernel panic - not syncing: No init found.  Try passing init= option
>>> to kernel. See Linux Documentation/init.txt for guidance.
>>
>> I don't know that rootfs but it looks like there is no init.
> 
> Ofcourse there's an init on the busybox-rootfs, and I'm able to boot
> it with an x86_64 Linux. The reason for panic is incorrect: I think
> (although not sure) a 32-bit rootfs userland will work.

A 32Bit UML kernel can run 32Bit users, a 64Bit UML kernel can only
run 64Bit userland. We have no 32Bit compat layer on x86_64.
Patches are welcome.

>>> [1]    25526 abort (core dumped)  linux ubd0=busybox-rootfs
>>>                                                            %
>>>
>>> Rubbish.
>>
>> UML core dumps at panic() by design.
> 
> On a related note, why does it screw up my terminal? I have to `reset`
> to get a nice working terminal.

I really don't know. That is not by design.

>> Seriously, my plan is to get rid of SUBARCH, that's why I did not push your patches
>> upstream and I've send the rid of SUBARCH patch series.
>> It turned out that other archs depend on SUBARCH too therefore some more thinking is needed.
>> Time passed, merge window closed, $dayjob needed some attention...
> 
> Don't let some grand plan stall reasonable patches that fix immediate problems.
> 
>> That said, your "arch/um: make it work with defconfig and x86_64" patch is also not perfect.
>> "make defconfig ARCH=um SUBARCH=x86" will create x86_64 defconfig, which is wrong and breaks existing
>> setups.
> 
> Wrong.
> 
>   $ make defconfig ARCH=um SUBARCH=i386
>   *** Default configuration is based on 'i386_defconfig'
>   #
>   # configuration written to .config
>   #

I wrote "SUBARCH=x86" *not* SUBARCH=i386.

Again, if SUBARCH=x86 works too I'll happily merge it.
But as of now it breaks existing setups.

Thanks,
//richard

Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Toralf Förster]

On 09/26/2013 12:35 PM, Richard Weinberger wrote:
> Am 26.09.2013 12:20, schrieb Ramkumar Ramachandra:
>> Richard Weinberger wrote:
>>> This patch is based on: https://lkml.org/lkml/2013/7/4/396
>>>
>>> Cc: Ramkumar Ramachandra <artagnon@gmail.com>
>>> Signed-off-by: Richard Weinberger <richard@nod.at>
>>> ---
>>>  arch/um/configs/i386_defconfig   | 954 +++++++++++++++++++++++++++++++++++++++
>>>  arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++++++++++++++
>>>  2 files changed, 1897 insertions(+)
>>>  create mode 100644 arch/um/configs/i386_defconfig
>>>  create mode 100644 arch/um/configs/x86_64_defconfig
>>
>> First, I'm pissed that the upstream tree doesn't build and run out of
>> the box months after I submitted a fix in July (and it's September
>> now). Fact that you dropped my sane patches aside and decided to write
>> a much larger series aside, user-mode Linux in upstream is broken.
>> This means that any user who does:
>>
>> $ ARCH=um make defconfig
>> $ ARCH=um make
>>
>> will end up with a *broken* Linux _today_. Unless the user is living
>> in the Stone Age with a 32-bit computer, this is what she will see
>> when she attempts to boot up Linux:

:-{

Grmpf

There are a lot of 32 bit user land linux installation (beside my own,
look at the x86 Gentoo world) in the wild - even running on modern 64bit
CPUs. The simple reason is that those installations run fine and the
performance "boost" of 64bit often isn't worth a new reinstallation.

--
the stone-age-Toralf

> 
> Not here.
> 
>> $ file linux
>> linux: ELF 32-bit LSB  executable, Intel 80386, version 1 (SYSV),
>> dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not
>> stripped
>> $ ./linux ubd0=busybox-rootfs
>> [...]
>> Kernel panic - not syncing: No init found.  Try passing init= option
>> to kernel. See Linux Documentation/init.txt for guidance.
> 
> I don't know that rootfs but it looks like there is no init.
> 
>> CPU: 0 PID: 1 Comm: swapper Not tainted 3.12.0-rc2-00083-g4b97280 #1
>> 0b869fbc 08272f87 0b869fdc 0820c5cd 00000001 00000000 00000000 00000000
>>        0b869fe8 0820c126 08252593 0b869ff8 08059317 00000000 00000001 00000000
>>        00000000 0b869f94:  [<0805a11c>] show_stack+0x54/0x8c
>> 0b869fb4:  [<0820e3c8>] dump_stack+0x16/0x1b
>> 0b869fc8:  [<0820c5cd>] panic+0x67/0x149
>> 0b869fe0:  [<0820c126>] kernel_init+0xab/0xaf
>> 0b869fec:  [<08059317>] new_thread_handler+0x63/0x7c
>> 0b869ffc:  [<00000000>] 0x0
>>
>>
>> EIP: 0023:[<f7717430>] CPU: 0 Not tainted ESP: 002b:ffc386dc EFLAGS: 00000296
>>     Not tainted
>> EAX: 00000000 EBX: 000063ba ECX: 00000013 EDX: 000063ba
>> ESI: 000063b6 EDI: 00000002 EBP: ffc38708 DS: 002b ES: 002b
>> 0b869f44:  [<0806aff4>] show_regs+0xb4/0xbc
>> 0b869f70:  [<0805b23b>] panic_exit+0x20/0x36
>> 0b869f84:  [<0808521b>] notifier_call_chain+0x28/0x4b
>> 0b869fac:  [<0808526c>] atomic_notifier_call_chain+0x15/0x17
>> 0b869fbc:  [<0820c5de>] panic+0x78/0x149
>> 0b869fe0:  [<0820c126>] kernel_init+0xab/0xaf
>> 0b869fec:  [<08059317>] new_thread_handler+0x63/0x7c
>> 0b869ffc:  [<00000000>] 0x0
>>
>> [1]    25526 abort (core dumped)  linux ubd0=busybox-rootfs
>>                                                            %
>>
>> Rubbish.
> 
> UML core dumps at panic() by design.
> 
>> When I rebase my original patches (exactly 2 small independent
>> patches) onto the new upstream, stuff works as usual. If you're not
>> convinced, try the um-build branch from
>> https://github.com/artagnon/linux for yourself.
> 
>> Are you against accepting good patches and stalling work? What is your
>> plan exactly?
> 
> Sure, my great plan is to destroy Linux. I work for Microsoft. ;-)
> 
> Seriously, my plan is to get rid of SUBARCH, that's why I did not push your patches
> upstream and I've send the rid of SUBARCH patch series.
> It turned out that other archs depend on SUBARCH too therefore some more thinking is needed.
> Time passed, merge window closed, $dayjob needed some attention...
> 
> That said, your "arch/um: make it work with defconfig and x86_64" patch is also not perfect.
> "make defconfig ARCH=um SUBARCH=x86" will create x86_64 defconfig, which is wrong and breaks existing
> setups.
> Secondly, what stops you from running "make defconfig ARCH=um SUBARCH=x86_64" to run your x86_64 bit
> userspace?
> 
> Thanks,
> //richard
> 


-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3

Re: [PATCH 1/8] um: Create defconfigs for i386 and x86_64

[Richard Weinberger]

Am 27.09.2013 11:22, schrieb Toralf Förster:
> On 09/26/2013 12:35 PM, Richard Weinberger wrote:
>> Am 26.09.2013 12:20, schrieb Ramkumar Ramachandra:
>>> Richard Weinberger wrote:
>>>> This patch is based on: https://lkml.org/lkml/2013/7/4/396
>>>>
>>>> Cc: Ramkumar Ramachandra <artagnon@gmail.com>
>>>> Signed-off-by: Richard Weinberger <richard@nod.at>
>>>> ---
>>>>  arch/um/configs/i386_defconfig   | 954 +++++++++++++++++++++++++++++++++++++++
>>>>  arch/um/configs/x86_64_defconfig | 943 ++++++++++++++++++++++++++++++++++++++
>>>>  2 files changed, 1897 insertions(+)
>>>>  create mode 100644 arch/um/configs/i386_defconfig
>>>>  create mode 100644 arch/um/configs/x86_64_defconfig
>>>
>>> First, I'm pissed that the upstream tree doesn't build and run out of
>>> the box months after I submitted a fix in July (and it's September
>>> now). Fact that you dropped my sane patches aside and decided to write
>>> a much larger series aside, user-mode Linux in upstream is broken.
>>> This means that any user who does:
>>>
>>> $ ARCH=um make defconfig
>>> $ ARCH=um make
>>>
>>> will end up with a *broken* Linux _today_. Unless the user is living
>>> in the Stone Age with a 32-bit computer, this is what she will see
>>> when she attempts to boot up Linux:
> 
> :-{
> 
> Grmpf
> 
> There are a lot of 32 bit user land linux installation (beside my own,
> look at the x86 Gentoo world) in the wild - even running on modern 64bit
> CPUs. The simple reason is that those installations run fine and the
> performance "boost" of 64bit often isn't worth a new reinstallation.

You *can* of course run 32bit userland on UML. Just create a 32bit UML on x86_64.

make defconfig ARCH=um SUBARCH=i386
make linux ARCH=um SUBARCH=i386

This will work on x86_64 and x86 hosts.

Thanks,
//richard

[PATCH 2/8] um: Do not use SUBARCH

[Richard Weinberger]

From now on UML does no longer depend on SUBARCH and will
never silently change CONFIG_64BIT.

"make defconfig ARCH=um" produces now a .config with is suitable
for your host arch.

"make i386_defconfig ARCH=um" replaces "make defconfig ARCH=um SUBARCH=i386"
"and make x86_64_defconfig ARCH=um" replaces "make defconfig ARCH=um SUBARCH=x86_64"

Finally a "make ARCH=um" will produce an UML as described in your .config and you
don't have to worry about setting the correct SUBARCH.

This patch is based on: https://lkml.org/lkml/2013/7/4/396

Cc: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/um/Kconfig.common |  4 ----
 arch/um/Makefile       | 21 +++++++++++----------
 arch/x86/Makefile.um   |  2 +-
 arch/x86/um/Kconfig    |  6 +++---
 4 files changed, 15 insertions(+), 18 deletions(-)

diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common
index bceee66..a7ef0b4 100644
--- a/arch/um/Kconfig.common
+++ b/arch/um/Kconfig.common
@@ -58,7 +58,3 @@ config GENERIC_BUG
 config HZ
 	int
 	default 100
-
-config SUBARCH
-	string
-	option env="SUBARCH"
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 133f7de..5bc7892 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -8,6 +8,8 @@
 
 ARCH_DIR := arch/um
 OS := $(shell uname -s)
+OS_ARCH := $(shell uname -m)
+
 # We require bash because the vmlinux link and loader script cpp use bash
 # features.
 SHELL := /bin/bash
@@ -20,15 +22,14 @@ core-y			+= $(ARCH_DIR)/kernel/		\
 
 MODE_INCLUDE	+= -I$(srctree)/$(ARCH_DIR)/include/shared/skas
 
-HEADER_ARCH 	:= $(SUBARCH)
-
-# Additional ARCH settings for x86
-ifeq ($(SUBARCH),i386)
-        HEADER_ARCH := x86
-endif
-ifeq ($(SUBARCH),x86_64)
-        HEADER_ARCH := x86
-	KBUILD_CFLAGS += -mcmodel=large
+# Currently we support only i386 and x86_64, if you port UML to another arch
+# add another if branch...
+ifeq ($(OS_ARCH),x86_64)
+	HEADER_ARCH := x86
+	KBUILD_DEFCONFIG := x86_64_defconfig
+else
+	HEADER_ARCH := x86
+	KBUILD_DEFCONFIG := i386_defconfig
 endif
 
 HOST_DIR := arch/$(HEADER_ARCH)
@@ -155,4 +156,4 @@ endef
 include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s
 	$(call filechk,gen-asm-offsets)
 
-export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
+export USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
diff --git a/arch/x86/Makefile.um b/arch/x86/Makefile.um
index 36b62bc..91d088c 100644
--- a/arch/x86/Makefile.um
+++ b/arch/x86/Makefile.um
@@ -40,7 +40,7 @@ else
 
 START := 0x60000000
 
-KBUILD_CFLAGS += -fno-builtin -m64 
+KBUILD_CFLAGS += -fno-builtin -m64 -mcmodel=large
 
 CHECKFLAGS  += -m64 -D__x86_64__
 KBUILD_AFLAGS += -m64
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
index 14ef8d1..bb6df67 100644
--- a/arch/x86/um/Kconfig
+++ b/arch/x86/um/Kconfig
@@ -1,4 +1,4 @@
-mainmenu "User Mode Linux/$SUBARCH $KERNELVERSION Kernel Configuration"
+mainmenu "User Mode Linux $KERNELVERSION Kernel Configuration"
 
 source "arch/um/Kconfig.common"
 
@@ -15,8 +15,8 @@ config UML_X86
 	select GENERIC_FIND_FIRST_BIT
 
 config 64BIT
-	bool "64-bit kernel" if SUBARCH = "x86"
-	default SUBARCH != "i386"
+	bool "64-bit kernel"
+	default n
 
 config X86_32
 	def_bool !64BIT
-- 
1.8.1.4

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Richard Weinberger wrote:
> This patch is based on: https://lkml.org/lkml/2013/7/4/396

This is the original patch I sent across in July.

> diff --git a/arch/um/Makefile b/arch/um/Makefile
> index 133f7de..5bc7892 100644
> --- a/arch/um/Makefile
> +++ b/arch/um/Makefile
> @@ -8,6 +8,8 @@
>
>  ARCH_DIR := arch/um
>  OS := $(shell uname -s)
> +OS_ARCH := $(shell uname -m)
> +
>  # We require bash because the vmlinux link and loader script cpp use bash
>  # features.
>  SHELL := /bin/bash
> @@ -20,15 +22,14 @@ core-y                      += $(ARCH_DIR)/kernel/          \
>
>  MODE_INCLUDE   += -I$(srctree)/$(ARCH_DIR)/include/shared/skas
>
> -HEADER_ARCH    := $(SUBARCH)
> -
> -# Additional ARCH settings for x86
> -ifeq ($(SUBARCH),i386)
> -        HEADER_ARCH := x86
> -endif
> -ifeq ($(SUBARCH),x86_64)
> -        HEADER_ARCH := x86
> -       KBUILD_CFLAGS += -mcmodel=large
> +# Currently we support only i386 and x86_64, if you port UML to another arch
> +# add another if branch...
> +ifeq ($(OS_ARCH),x86_64)
> +       HEADER_ARCH := x86
> +       KBUILD_DEFCONFIG := x86_64_defconfig
> +else
> +       HEADER_ARCH := x86
> +       KBUILD_DEFCONFIG := i386_defconfig
>  endif

I honestly don't get why this approach is superior to the original
one. In the original, I could set SUBARCH to whatever target
architecture and attempt to build user-mode Linux. Fact that it is
only implemented for i386 and x86_64 aside, keeping a SUBARCH means
that it's possible to build a 32-bit kernel on a 64-bit machine and
vice-versa. If you want stuff to work automagically (ie. in the 90%
case), you have to shell out to uname -m to figure out the host's real
architecture. Which both versions do sufficiently well.

Forget all that. What matters is that upstream is still broken, and
users are suffering. Despite a reasonable fix being submitted in July.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Richard Weinberger]

Am 26.09.2013 12:40, schrieb Ramkumar Ramachandra:
> Richard Weinberger wrote:
> Forget all that. What matters is that upstream is still broken, and
> users are suffering. Despite a reasonable fix being submitted in July.

So, what exactly is broken in upstream?
make defconfig works as it always did.

make defconfig ARCH=um SUBARCH=x86 (or SUBARCH=i386) will create a defconfig for 32bit.
make defconfig ARCH=um SUBARCH=x86_64 one for 64bit.

Thanks,
//richard

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Richard Weinberger wrote:
> So, what exactly is broken in upstream?
> make defconfig works as it always did.

Auto-detection of SUBARCH, which can be done with a simple call to
uname -m (the 90% case). The second patch I submitted prevented
spawning xterms unnecessarily, which we discussed was a good move.

> make defconfig ARCH=um SUBARCH=x86 (or SUBARCH=i386) will create a defconfig for 32bit.
> make defconfig ARCH=um SUBARCH=x86_64 one for 64bit.

Yes, that's how I prepared the patch in the first place.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Richard Weinberger]

Am 26.09.2013 12:53, schrieb Ramkumar Ramachandra:
> Richard Weinberger wrote:
>> So, what exactly is broken in upstream?
>> make defconfig works as it always did.
> 
> Auto-detection of SUBARCH, which can be done with a simple call to
> uname -m (the 90% case). The second patch I submitted prevented
> spawning xterms unnecessarily, which we discussed was a good move.

Covering only 90% of all cases is not enough.
We must not break existing setups.
That's also why my "Get rid of SUBARCH" series is not upstream.

Your second patch changed CONFIG_CON_CHAN to pts, which is ok but not
a major issue.
The xterms are also not spawning unnecessarily they spawn upon a tty device is opened.
With your patch UML create another pts. Thus, the spawning is hidden...
I did not push it upstream because it depended on your first one and as I said, it's not critical.
This does not mean that I moved it to /dev/null.
Again, the plan is to get rid of SUBARCH at all.

>> make defconfig ARCH=um SUBARCH=x86 (or SUBARCH=i386) will create a defconfig for 32bit.
>> make defconfig ARCH=um SUBARCH=x86_64 one for 64bit.
> 
> Yes, that's how I prepared the patch in the first place.

So, nothing is broken.

If you want "make defconfig ARCH=um" creating a defconfig for the correct arch you need
more than your first patch. Again, "Get rid of SUBARCH" series has the same goal.

Thanks,
//richard

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Richard Weinberger wrote:
>> Auto-detection of SUBARCH, which can be done with a simple call to
>> uname -m (the 90% case). The second patch I submitted prevented
>> spawning xterms unnecessarily, which we discussed was a good move.
>
> Covering only 90% of all cases is not enough.
> We must not break existing setups.
> That's also why my "Get rid of SUBARCH" series is not upstream.

Mine covers 100% of the cases. My series is about auto-detection of
SUBARCH, not its removal: you can still set a SUBARCH from the
command-line; existing setups don't break.

> Your second patch changed CONFIG_CON_CHAN to pts, which is ok but not
> a major issue.

"Major" or "minor" is purely your classification: don't impose your
value judgement on reasonable patches. I am the user, and I demand a
pleasant build process and ui. Moreover, how do you expect more
contributions to come in until existing patches make it to upstream?

> The xterms are also not spawning unnecessarily they spawn upon a tty device is opened.
> With your patch UML create another pts. Thus, the spawning is hidden...

It connects to an existing host pts device instead of spawning a new
xterm and connecting to the console io on that. Why is that not
desirable?

> I did not push it upstream because it depended on your first one and as I said, it's not critical.
> This does not mean that I moved it to /dev/null.

... and you still haven't told me what's wrong with my first patch.

> Again, the plan is to get rid of SUBARCH at all.

You've been harping about this plan for the last N months, and nothing
has happened so far. It's time to stop planning, and accept good work.

>>> make defconfig ARCH=um SUBARCH=x86 (or SUBARCH=i386) will create a defconfig for 32bit.
>>> make defconfig ARCH=um SUBARCH=x86_64 one for 64bit.
>>
>> Yes, that's how I prepared the patch in the first place.
>
> So, nothing is broken.

So the user is Ugly and Stupid for expecting:

  $ make defconfig ARCH=um
  $ make -j 8 ARCH=um

to work? Stop denying problems, no matter how "major" or "minor" they are.

> If you want "make defconfig ARCH=um" creating a defconfig for the correct arch you need
> more than your first patch.

No, you don't. Try it for yourself and see. Set a SUBARCH if you like,
and it'll still work fine.

> Again, "Get rid of SUBARCH" series has the same goal.

For the last time, getting rid of SUBARCH is Wrong and Undesirable.

-- 8< --
Here's a transcript spoonfeeding you the impact of my first patch:

  $ make defconfig ARCH=um SUBARCH=i386
  *** Default configuration is based on 'i386_defconfig'
  #
  # configuration written to .config
  #
  $ make defconfig ARCH=um SUBARCH=x86_64
  *** Default configuration is based on 'x86_64_defconfig'
  #
  # configuration written to .config
  #
  $ make defconfig ARCH=um
  *** Default configuration is based on 'x86_64_defconfig'
  #
  # configuration written to .config
  #

In the last case, notice how defconfig automatically picks up
x86_64_defconfig correctly: if I were on an i386 machine, it would
have picked up i386_defconfig like in the first case. Without my
patch, the last case would have incorrectly picked up an i386
defconfig, which is Stupid and Wrong.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Richard Weinberger]

Am 26.09.2013 13:43, schrieb Ramkumar Ramachandra:
> Richard Weinberger wrote:
>>> Auto-detection of SUBARCH, which can be done with a simple call to
>>> uname -m (the 90% case). The second patch I submitted prevented
>>> spawning xterms unnecessarily, which we discussed was a good move.
>>
>> Covering only 90% of all cases is not enough.
>> We must not break existing setups.
>> That's also why my "Get rid of SUBARCH" series is not upstream.
> 
> Mine covers 100% of the cases. My series is about auto-detection of
> SUBARCH, not its removal: you can still set a SUBARCH from the
> command-line; existing setups don't break.

I told you already that "make defconfig ARCH=um SUBARCH=x86" will spuriously
create a x86_64 config on x86_64.
This breaks existing setups.

>> Your second patch changed CONFIG_CON_CHAN to pts, which is ok but not
>> a major issue.
> 
> "Major" or "minor" is purely your classification: don't impose your
> value judgement on reasonable patches. I am the user, and I demand a
> pleasant build process and ui. Moreover, how do you expect more
> contributions to come in until existing patches make it to upstream?
> 
>> The xterms are also not spawning unnecessarily they spawn upon a tty device is opened.
>> With your patch UML create another pts. Thus, the spawning is hidden...
> 
> It connects to an existing host pts device instead of spawning a new
> xterm and connecting to the console io on that. Why is that not
> desirable?
> 
>> I did not push it upstream because it depended on your first one and as I said, it's not critical.
>> This does not mean that I moved it to /dev/null.
> 
> ... and you still haven't told me what's wrong with my first patch.
> 
>> Again, the plan is to get rid of SUBARCH at all.
> 
> You've been harping about this plan for the last N months, and nothing
> has happened so far. It's time to stop planning, and accept good work.

I sent the series on Aug 21st.
Do the maths, it's not N months...

>>>> make defconfig ARCH=um SUBARCH=x86 (or SUBARCH=i386) will create a defconfig for 32bit.
>>>> make defconfig ARCH=um SUBARCH=x86_64 one for 64bit.
>>>
>>> Yes, that's how I prepared the patch in the first place.
>>
>> So, nothing is broken.
> 
> So the user is Ugly and Stupid for expecting:
> 
>   $ "
>   $ make -j 8 ARCH=um
> 
> to work? Stop denying problems, no matter how "major" or "minor" they are.

"make defconfig ARCH=um" creates a defconfig for x86 as it always did.
If you want to run a x86_64 bit user space, create a x86_64 defconfig.

>> If you want "make defconfig ARCH=um" creating a defconfig for the correct arch you need
>> more than your first patch.
> 
> No, you don't. Try it for yourself and see. Set a SUBARCH if you like,
> and it'll still work fine.
> 
>> Again, "Get rid of SUBARCH" series has the same goal.
> 
> For the last time, getting rid of SUBARCH is Wrong and Undesirable.

That's your opinion.

> -- 8< --
> Here's a transcript spoonfeeding you the impact of my first patch:
> 
>   $ make defconfig ARCH=um SUBARCH=i386
>   *** Default configuration is based on 'i386_defconfig'
>   #
>   # configuration written to .config
>   #
>   $ make defconfig ARCH=um SUBARCH=x86_64
>   *** Default configuration is based on 'x86_64_defconfig'
>   #
>   # configuration written to .config
>   #
>   $ make defconfig ARCH=um
>   *** Default configuration is based on 'x86_64_defconfig'
>   #
>   # configuration written to .config
>   #
> 
> In the last case, notice how defconfig automatically picks up
> x86_64_defconfig correctly: if I were on an i386 machine, it would
> have picked up i386_defconfig like in the first case. Without my
> patch, the last case would have incorrectly picked up an i386
> defconfig, which is Stupid and Wrong.

You missed SUBARCH=x86.

That said, if you cover all cases I'll happily merge that.
And honestly, your patches are minor stuff, they don't even touch C source files.
Acting up like you do just because of some default values is crazy.
We have more serious problems so solve.

Thanks,
//richard

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Richard Weinberger wrote:
> I told you already that "make defconfig ARCH=um SUBARCH=x86" will spuriously
> create a x86_64 config on x86_64.
> This breaks existing setups.

I'll fix this and resubmit soon.

Thanks.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Ramkumar Ramachandra wrote:
> Richard Weinberger wrote:
>> I told you already that "make defconfig ARCH=um SUBARCH=x86" will spuriously
>> create a x86_64 config on x86_64.
>> This breaks existing setups.
>
> I'll fix this and resubmit soon.

Wait a minute. You're now arguing about whether the generic "x86"
means i386 or x86_64. Its meaning is already defined in
arch/x86/Kconfig and arch/x86/um/Kconfig: see the config 64BIT. Unless
i386 is explicitly specified, the default is to build a 64-bit kernel.
That is already defined for a normal Linux kernel, and user-mode Linux
should not break that convention. So, in the example you pulled out of
your hat:

  $ make defconfig ARCH=um SUBARCH=x86

the user should expect a 64-bit build, and not an i386 build as you
say. Both my patches are correct, and the "regression" that you
pointed out is a red herring.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Geert Uytterhoeven]

On Thu, Sep 26, 2013 at 3:13 PM, Ramkumar Ramachandra
<artagnon@gmail.com> wrote:
> Ramkumar Ramachandra wrote:
>> Richard Weinberger wrote:
>>> I told you already that "make defconfig ARCH=um SUBARCH=x86" will spuriously
>>> create a x86_64 config on x86_64.
>>> This breaks existing setups.
>>
>> I'll fix this and resubmit soon.
>
> Wait a minute. You're now arguing about whether the generic "x86"
> means i386 or x86_64. Its meaning is already defined in
> arch/x86/Kconfig and arch/x86/um/Kconfig: see the config 64BIT. Unless
> i386 is explicitly specified, the default is to build a 64-bit kernel.
> That is already defined for a normal Linux kernel, and user-mode Linux
> should not break that convention. So, in the example you pulled out of
> your hat:
>
>   $ make defconfig ARCH=um SUBARCH=x86
>
> the user should expect a 64-bit build, and not an i386 build as you
> say. Both my patches are correct, and the "regression" that you
> pointed out is a red herring.

Sorry for chiming in, but... what about cross compiling?
SUBARCH=x86 should give you a 32-bit ia32 kernel, right?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Geert Uytterhoeven wrote:
> Sorry for chiming in, but... what about cross compiling?
> SUBARCH=x86 should give you a 32-bit ia32 kernel, right?

User-Mode Linux only supports two host architectures (called $SUBARCH)
at the moment: i386 and x86_64. If you leave out the $SUBARCH on
either an i386 or x86_64 machine, my patch will automatically pick the
$(uname -m) architecture to build with. To cross-compile, specify the
$SUBARCH explicitly.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Richard Weinberger]

Am 26.09.2013 15:26, schrieb Geert Uytterhoeven:
> On Thu, Sep 26, 2013 at 3:13 PM, Ramkumar Ramachandra
> <artagnon@gmail.com> wrote:
>> Ramkumar Ramachandra wrote:
>>> Richard Weinberger wrote:
>>>> I told you already that "make defconfig ARCH=um SUBARCH=x86" will spuriously
>>>> create a x86_64 config on x86_64.
>>>> This breaks existing setups.
>>>
>>> I'll fix this and resubmit soon.
>>
>> Wait a minute. You're now arguing about whether the generic "x86"
>> means i386 or x86_64. Its meaning is already defined in
>> arch/x86/Kconfig and arch/x86/um/Kconfig: see the config 64BIT. Unless
>> i386 is explicitly specified, the default is to build a 64-bit kernel.
>> That is already defined for a normal Linux kernel, and user-mode Linux
>> should not break that convention. So, in the example you pulled out of
>> your hat:
>>
>>   $ make defconfig ARCH=um SUBARCH=x86
>>
>> the user should expect a 64-bit build, and not an i386 build as you
>> say. Both my patches are correct, and the "regression" that you
>> pointed out is a red herring.
> 
> Sorry for chiming in, but... what about cross compiling?
> SUBARCH=x86 should give you a 32-bit ia32 kernel, right?

Correct.
Users expect from SUBARCH=x86 a i386 32bit UML kernel.

Thanks,
//richard

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Richard Weinberger wrote:
>> Sorry for chiming in, but... what about cross compiling?
>> SUBARCH=x86 should give you a 32-bit ia32 kernel, right?
>
> Correct.
> Users expect from SUBARCH=x86 a i386 32bit UML kernel.

This is an insane expectation. This is kernel convention (it has
nothing to do with uml):

SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
 -e s/sun4u/sparc64/ \
 -e s/arm.*/arm/ -e s/sa110/arm/ \
 -e s/s390x/s390/ -e s/parisc64/parisc/ \
 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
 -e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ )

config 64BIT
bool "64-bit kernel" if ARCH = "x86"
default ARCH != "i386"
---help---
 Say yes to build a 64-bit kernel - formerly known as x86_64
 Say no to build a 32-bit kernel - formerly known as i386

If you want to stand on your head and demand that all these
conventions be changed against all reason, I have nothing further to
say.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Richard Weinberger]

Am 26.09.2013 16:36, schrieb Ramkumar Ramachandra:
> Richard Weinberger wrote:
>>> Sorry for chiming in, but... what about cross compiling?
>>> SUBARCH=x86 should give you a 32-bit ia32 kernel, right?
>>
>> Correct.
>> Users expect from SUBARCH=x86 a i386 32bit UML kernel.
> 
> This is an insane expectation. This is kernel convention (it has
> nothing to do with uml):

Hmm, looks like I missed commit ffee0de411, thanks for pointing that out.
Before ffee0de411 "make defconfig ARCH=x86" produced a 32bit defconfig.
Now it produces a x86_64 defconfig.

As UML is a variant of x86 it makes not much sense to do things the other
way around even if we break assumptions.

And, of course, this makes your patch valid.
Can you also please ensure that your new defconfigs are minimal?
See make savedefconfig.

Thanks,
//richard

Re: [PATCH 2/8] um: Do not use SUBARCH

[Ramkumar Ramachandra]

Richard Weinberger wrote:
> And, of course, this makes your patch valid.
> Can you also please ensure that your new defconfigs are minimal?

Yeah, it's close to a minimal configuration for the 3.10 kernel
(latest at the time of patch submission). I was aiming to minimize the
diff between the current defconfig and the two new defconfigs in
configs/. The slim diffstat does the talking:

 arch/um/Kconfig.common                          |   5 -
 arch/um/Makefile                                |  11 ++
 arch/um/{defconfig => configs/i386_defconfig}   | 209 +++++++++++++-------
 arch/um/{defconfig => configs/x86_64_defconfig} | 250 +++++++++++++++---------
 arch/x86/um/Kconfig                             |   5 +
 5 files changed, 306 insertions(+), 174 deletions(-)
 copy arch/um/{defconfig => configs/i386_defconfig} (86%)
 rename arch/um/{defconfig => configs/x86_64_defconfig} (83%)

If we find some deficiencies, we can always update it. For now, please
commit these two patches.

Thanks.

Re: [PATCH 2/8] um: Do not use SUBARCH

[Richard Weinberger]

Am 26.09.2013 18:06, schrieb Ramkumar Ramachandra:
> Richard Weinberger wrote:
>> And, of course, this makes your patch valid.
>> Can you also please ensure that your new defconfigs are minimal?
> 
> Yeah, it's close to a minimal configuration for the 3.10 kernel
> (latest at the time of patch submission). I was aiming to minimize the
> diff between the current defconfig and the two new defconfigs in
> configs/. The slim diffstat does the talking:
> 
>  arch/um/Kconfig.common                          |   5 -
>  arch/um/Makefile                                |  11 ++
>  arch/um/{defconfig => configs/i386_defconfig}   | 209 +++++++++++++-------
>  arch/um/{defconfig => configs/x86_64_defconfig} | 250 +++++++++++++++---------
>  arch/x86/um/Kconfig                             |   5 +
>  5 files changed, 306 insertions(+), 174 deletions(-)
>  copy arch/um/{defconfig => configs/i386_defconfig} (86%)
>  rename arch/um/{defconfig => configs/x86_64_defconfig} (83%)
> 
> If we find some deficiencies, we can always update it. For now, please
> commit these two patches.

Please resend them with savedefconfig applied.
There is no need to have three commits for that.

Thanks,
//richard

[PATCH 3/8] um: Remove old defconfig

[Richard Weinberger]

The old unified defconfig is no longer needed.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/um/defconfig | 901 ------------------------------------------------------
 1 file changed, 901 deletions(-)
 delete mode 100644 arch/um/defconfig

diff --git a/arch/um/defconfig b/arch/um/defconfig
deleted file mode 100644
index 08107a7..0000000
--- a/arch/um/defconfig
+++ /dev/null
@@ -1,901 +0,0 @@
-#
-# Automatically generated file; DO NOT EDIT.
-# User Mode Linux/i386 3.3.0 Kernel Configuration
-#
-CONFIG_DEFCONFIG_LIST="arch/$ARCH/defconfig"
-CONFIG_UML=y
-CONFIG_MMU=y
-CONFIG_NO_IOMEM=y
-# CONFIG_TRACE_IRQFLAGS_SUPPORT is not set
-CONFIG_LOCKDEP_SUPPORT=y
-# CONFIG_STACKTRACE_SUPPORT is not set
-CONFIG_GENERIC_CALIBRATE_DELAY=y
-CONFIG_GENERIC_BUG=y
-CONFIG_GENERIC_CLOCKEVENTS=y
-CONFIG_HZ\x100
-
-#
-# UML-specific options
-#
-
-#
-# Host processor type and features
-#
-# CONFIG_M486 is not set
-# CONFIG_M586 is not set
-# CONFIG_M586TSC is not set
-# CONFIG_M586MMX is not set
-CONFIG_M686=y
-# CONFIG_MPENTIUMII is not set
-# CONFIG_MPENTIUMIII is not set
-# CONFIG_MPENTIUMM is not set
-# CONFIG_MPENTIUM4 is not set
-# CONFIG_MK6 is not set
-# CONFIG_MK7 is not set
-# CONFIG_MK8 is not set
-# CONFIG_MCRUSOE is not set
-# CONFIG_MEFFICEON is not set
-# CONFIG_MWINCHIPC6 is not set
-# CONFIG_MWINCHIP3D is not set
-# CONFIG_MELAN is not set
-# CONFIG_MGEODEGX1 is not set
-# CONFIG_MGEODE_LX is not set
-# CONFIG_MCYRIXIII is not set
-# CONFIG_MVIAC3_2 is not set
-# CONFIG_MVIAC7 is not set
-# CONFIG_MCORE2 is not set
-# CONFIG_MATOM is not set
-# CONFIG_X86_GENERIC is not set
-CONFIG_X86_INTERNODE_CACHE_SHIFT=5
-CONFIG_X86_CMPXCHG=y
-CONFIG_X86_L1_CACHE_SHIFT=5
-CONFIG_X86_XADD=y
-CONFIG_X86_PPRO_FENCE=y
-CONFIG_X86_WP_WORKS_OK=y
-CONFIG_X86_INVLPG=y
-CONFIG_X86_BSWAP=y
-CONFIG_X86_POPAD_OK=y
-CONFIG_X86_USE_PPRO_CHECKSUM=y
-CONFIG_X86_TSC=y
-CONFIG_X86_CMPXCHG64=y
-CONFIG_X86_CMOV=y
-CONFIG_X86_MINIMUM_CPU_FAMILY=5
-CONFIG_CPU_SUP_INTEL=y
-CONFIG_CPU_SUP_CYRIX_32=y
-CONFIG_CPU_SUP_AMD=y
-CONFIG_CPU_SUP_CENTAUR=y
-CONFIG_CPU_SUP_TRANSMETA_32=y
-CONFIG_CPU_SUP_UMC_32=y
-CONFIG_UML_X86=y
-# CONFIG_64BIT is not set
-CONFIG_X86_32=y
-# CONFIG_X86_64 is not set
-# CONFIG_RWSEM_XCHGADD_ALGORITHM is not set
-CONFIG_RWSEM_GENERIC_SPINLOCK=y
-# CONFIG_3_LEVEL_PGTABLES is not set
-CONFIG_ARCH_HAS_SC_SIGNALS=y
-CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y
-CONFIG_GENERIC_HWEIGHT=y
-# CONFIG_STATIC_LINK is not set
-CONFIG_SELECT_MEMORY_MODEL=y
-CONFIG_FLATMEM_MANUAL=y
-CONFIG_FLATMEM=y
-CONFIG_FLAT_NODE_MEM_MAP=y
-CONFIG_PAGEFLAGS_EXTENDED=y
-CONFIG_SPLIT_PTLOCK_CPUS=4
-# CONFIG_COMPACTION is not set
-# CONFIG_PHYS_ADDR_T_64BIT is not set
-CONFIG_ZONE_DMA_FLAG=0
-CONFIG_VIRT_TO_BUS=y
-# CONFIG_KSM is not set
-CONFIG_DEFAULT_MMAP_MIN_ADDR@96
-CONFIG_NEED_PER_CPU_KM=y
-# CONFIG_CLEANCACHE is not set
-CONFIG_TICK_ONESHOT=y
-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
-CONFIG_LD_SCRIPT_DYN=y
-CONFIG_BINFMT_ELF=y
-CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
-CONFIG_HAVE_AOUT=y
-# CONFIG_BINFMT_AOUT is not set
-CONFIG_BINFMT_MISC=m
-CONFIG_HOSTFS=y
-# CONFIG_HPPFS is not set
-CONFIG_MCONSOLE=y
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_KERNEL_STACK_ORDER=0
-# CONFIG_MMAPPER is not set
-CONFIG_NO_DMA=y
-
-#
-# General setup
-#
-CONFIG_EXPERIMENTAL=y
-CONFIG_BROKEN_ON_SMP=y
-CONFIG_INIT_ENV_ARG_LIMIT\x128
-CONFIG_CROSS_COMPILE=""
-CONFIG_LOCALVERSION=""
-CONFIG_LOCALVERSION_AUTO=y
-CONFIG_DEFAULT_HOSTNAME="(none)"
-CONFIG_SWAP=y
-CONFIG_SYSVIPC=y
-CONFIG_SYSVIPC_SYSCTL=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_POSIX_MQUEUE_SYSCTL=y
-CONFIG_BSD_PROCESS_ACCT=y
-# CONFIG_BSD_PROCESS_ACCT_V3 is not set
-# CONFIG_FHANDLE is not set
-# CONFIG_TASKSTATS is not set
-# CONFIG_AUDIT is not set
-CONFIG_HAVE_GENERIC_HARDIRQS=y
-
-#
-# IRQ subsystem
-#
-CONFIG_GENERIC_HARDIRQS=y
-CONFIG_GENERIC_IRQ_SHOW=y
-
-#
-# RCU Subsystem
-#
-CONFIG_TINY_RCU=y
-# CONFIG_PREEMPT_RCU is not set
-# CONFIG_RCU_TRACE is not set
-# CONFIG_TREE_RCU_TRACE is not set
-CONFIG_IKCONFIG=y
-CONFIG_IKCONFIG_PROC=y
-CONFIG_LOG_BUF_SHIFT\x14
-CONFIG_CGROUPS=y
-# CONFIG_CGROUP_DEBUG is not set
-CONFIG_CGROUP_FREEZER=y
-CONFIG_CGROUP_DEVICE=y
-CONFIG_CPUSETS=y
-CONFIG_PROC_PID_CPUSET=y
-CONFIG_CGROUP_CPUACCT=y
-CONFIG_RESOURCE_COUNTERS=y
-CONFIG_CGROUP_MEMCG=y
-CONFIG_CGROUP_MEMCG_SWAP=y
-# CONFIG_CGROUP_MEMCG_SWAP_ENABLED is not set
-# CONFIG_CGROUP_MEMCG_KMEM is not set
-CONFIG_CGROUP_SCHED=y
-CONFIG_FAIR_GROUP_SCHED=y
-# CONFIG_CFS_BANDWIDTH is not set
-# CONFIG_RT_GROUP_SCHED is not set
-CONFIG_BLK_CGROUP=y
-# CONFIG_DEBUG_BLK_CGROUP is not set
-# CONFIG_CHECKPOINT_RESTORE is not set
-CONFIG_NAMESPACES=y
-CONFIG_UTS_NS=y
-CONFIG_IPC_NS=y
-# CONFIG_USER_NS is not set
-# CONFIG_PID_NS is not set
-CONFIG_NET_NS=y
-# CONFIG_SCHED_AUTOGROUP is not set
-CONFIG_MM_OWNER=y
-CONFIG_SYSFS_DEPRECATED=y
-# CONFIG_SYSFS_DEPRECATED_V2 is not set
-# CONFIG_RELAY is not set
-# CONFIG_BLK_DEV_INITRD is not set
-CONFIG_CC_OPTIMIZE_FOR_SIZE=y
-CONFIG_SYSCTL=y
-CONFIG_ANON_INODES=y
-# CONFIG_EXPERT is not set
-CONFIG_UID16=y
-# CONFIG_SYSCTL_SYSCALL is not set
-CONFIG_KALLSYMS=y
-# CONFIG_KALLSYMS_ALL is not set
-CONFIG_HOTPLUG=y
-CONFIG_PRINTK=y
-CONFIG_BUG=y
-CONFIG_ELF_CORE=y
-CONFIG_BASE_FULL=y
-CONFIG_FUTEX=y
-CONFIG_EPOLL=y
-CONFIG_SIGNALFD=y
-CONFIG_TIMERFD=y
-CONFIG_EVENTFD=y
-CONFIG_SHMEM=y
-CONFIG_AIO=y
-# CONFIG_EMBEDDED is not set
-
-#
-# Kernel Performance Events And Counters
-#
-CONFIG_VM_EVENT_COUNTERS=y
-CONFIG_COMPAT_BRK=y
-CONFIG_SLAB=y
-# CONFIG_SLUB is not set
-# CONFIG_PROFILING is not set
-
-#
-# GCOV-based kernel profiling
-#
-# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
-CONFIG_SLABINFO=y
-CONFIG_RT_MUTEXES=y
-CONFIG_BASE_SMALL=0
-CONFIG_MODULES=y
-# CONFIG_MODULE_FORCE_LOAD is not set
-CONFIG_MODULE_UNLOAD=y
-# CONFIG_MODULE_FORCE_UNLOAD is not set
-# CONFIG_MODVERSIONS is not set
-# CONFIG_MODULE_SRCVERSION_ALL is not set
-CONFIG_BLOCK=y
-CONFIG_LBDAF=y
-# CONFIG_BLK_DEV_BSG is not set
-# CONFIG_BLK_DEV_BSGLIB is not set
-# CONFIG_BLK_DEV_INTEGRITY is not set
-
-#
-# Partition Types
-#
-# CONFIG_PARTITION_ADVANCED is not set
-CONFIG_MSDOS_PARTITION=y
-
-#
-# IO Schedulers
-#
-CONFIG_IOSCHED_NOOP=y
-CONFIG_IOSCHED_DEADLINE=y
-CONFIG_IOSCHED_CFQ=m
-# CONFIG_CFQ_GROUP_IOSCHED is not set
-CONFIG_DEFAULT_DEADLINE=y
-# CONFIG_DEFAULT_CFQ is not set
-# CONFIG_DEFAULT_NOOP is not set
-CONFIG_DEFAULT_IOSCHED="deadline"
-# CONFIG_INLINE_SPIN_TRYLOCK is not set
-# CONFIG_INLINE_SPIN_TRYLOCK_BH is not set
-# CONFIG_INLINE_SPIN_LOCK is not set
-# CONFIG_INLINE_SPIN_LOCK_BH is not set
-# CONFIG_INLINE_SPIN_LOCK_IRQ is not set
-# CONFIG_INLINE_SPIN_LOCK_IRQSAVE is not set
-CONFIG_INLINE_SPIN_UNLOCK=y
-# CONFIG_INLINE_SPIN_UNLOCK_BH is not set
-CONFIG_INLINE_SPIN_UNLOCK_IRQ=y
-# CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE is not set
-# CONFIG_INLINE_READ_TRYLOCK is not set
-# CONFIG_INLINE_READ_LOCK is not set
-# CONFIG_INLINE_READ_LOCK_BH is not set
-# CONFIG_INLINE_READ_LOCK_IRQ is not set
-# CONFIG_INLINE_READ_LOCK_IRQSAVE is not set
-CONFIG_INLINE_READ_UNLOCK=y
-# CONFIG_INLINE_READ_UNLOCK_BH is not set
-CONFIG_INLINE_READ_UNLOCK_IRQ=y
-# CONFIG_INLINE_READ_UNLOCK_IRQRESTORE is not set
-# CONFIG_INLINE_WRITE_TRYLOCK is not set
-# CONFIG_INLINE_WRITE_LOCK is not set
-# CONFIG_INLINE_WRITE_LOCK_BH is not set
-# CONFIG_INLINE_WRITE_LOCK_IRQ is not set
-# CONFIG_INLINE_WRITE_LOCK_IRQSAVE is not set
-CONFIG_INLINE_WRITE_UNLOCK=y
-# CONFIG_INLINE_WRITE_UNLOCK_BH is not set
-CONFIG_INLINE_WRITE_UNLOCK_IRQ=y
-# CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE is not set
-# CONFIG_MUTEX_SPIN_ON_OWNER is not set
-CONFIG_FREEZER=y
-
-#
-# UML Character Devices
-#
-CONFIG_STDERR_CONSOLE=y
-CONFIG_STDIO_CONSOLE=y
-CONFIG_SSL=y
-CONFIG_NULL_CHAN=y
-CONFIG_PORT_CHAN=y
-CONFIG_PTY_CHAN=y
-CONFIG_TTY_CHAN=y
-CONFIG_XTERM_CHAN=y
-# CONFIG_NOCONFIG_CHAN is not set
-CONFIG_CON_ZERO_CHAN="fd:0,fd:1"
-CONFIG_CON_CHAN="xterm"
-CONFIG_SSL_CHAN="pts"
-CONFIG_UML_SOUND=m
-CONFIG_SOUND=m
-CONFIG_SOUND_OSS_CORE=y
-CONFIG_HOSTAUDIO=m
-
-#
-# Device Drivers
-#
-
-#
-# Generic Driver Options
-#
-CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y
-CONFIG_STANDALONE=y
-CONFIG_PREVENT_FIRMWARE_BUILD=y
-CONFIG_FW_LOADER=y
-CONFIG_FIRMWARE_IN_KERNEL=y
-CONFIG_EXTRA_FIRMWARE=""
-# CONFIG_DEBUG_DRIVER is not set
-# CONFIG_DEBUG_DEVRES is not set
-# CONFIG_SYS_HYPERVISOR is not set
-CONFIG_GENERIC_CPU_DEVICES=y
-# CONFIG_DMA_SHARED_BUFFER is not set
-# CONFIG_CONNECTOR is not set
-# CONFIG_MTD is not set
-CONFIG_BLK_DEV=y
-CONFIG_BLK_DEV_UBD=y
-# CONFIG_BLK_DEV_UBD_SYNC is not set
-CONFIG_BLK_DEV_COW_COMMON=y
-CONFIG_BLK_DEV_LOOP=m
-CONFIG_BLK_DEV_LOOP_MIN_COUNT=8
-# CONFIG_BLK_DEV_CRYPTOLOOP is not set
-
-#
-# DRBD disabled because PROC_FS, INET or CONNECTOR not selected
-#
-CONFIG_BLK_DEV_NBD=m
-# CONFIG_BLK_DEV_RAM is not set
-# CONFIG_ATA_OVER_ETH is not set
-# CONFIG_BLK_DEV_RBD is not set
-
-#
-# Misc devices
-#
-# CONFIG_ENCLOSURE_SERVICES is not set
-# CONFIG_C2PORT is not set
-
-#
-# EEPROM support
-#
-# CONFIG_EEPROM_93CX6 is not set
-
-#
-# Texas Instruments shared transport line discipline
-#
-
-#
-# Altera FPGA firmware download module
-#
-
-#
-# SCSI device support
-#
-CONFIG_SCSI_MOD=y
-# CONFIG_RAID_ATTRS is not set
-# CONFIG_SCSI is not set
-# CONFIG_SCSI_DMA is not set
-# CONFIG_SCSI_NETLINK is not set
-# CONFIG_MD is not set
-CONFIG_NETDEVICES=y
-CONFIG_NET_CORE=y
-# CONFIG_BONDING is not set
-CONFIG_DUMMY=m
-# CONFIG_EQUALIZER is not set
-# CONFIG_MII is not set
-# CONFIG_NET_TEAM is not set
-# CONFIG_MACVLAN is not set
-# CONFIG_NETCONSOLE is not set
-# CONFIG_NETPOLL is not set
-# CONFIG_NET_POLL_CONTROLLER is not set
-CONFIG_TUN=m
-# CONFIG_VETH is not set
-
-#
-# CAIF transport drivers
-#
-CONFIG_ETHERNET=y
-CONFIG_NET_VENDOR_CHELSIO=y
-CONFIG_NET_VENDOR_INTEL=y
-CONFIG_NET_VENDOR_I825XX=y
-CONFIG_NET_VENDOR_MARVELL=y
-CONFIG_NET_VENDOR_NATSEMI=y
-CONFIG_NET_VENDOR_8390=y
-# CONFIG_PHYLIB is not set
-CONFIG_PPP=m
-# CONFIG_PPP_BSDCOMP is not set
-# CONFIG_PPP_DEFLATE is not set
-# CONFIG_PPP_FILTER is not set
-# CONFIG_PPP_MPPE is not set
-# CONFIG_PPP_MULTILINK is not set
-# CONFIG_PPPOE is not set
-# CONFIG_PPP_ASYNC is not set
-# CONFIG_PPP_SYNC_TTY is not set
-CONFIG_SLIP=m
-CONFIG_SLHC=m
-# CONFIG_SLIP_COMPRESSED is not set
-# CONFIG_SLIP_SMART is not set
-# CONFIG_SLIP_MODE_SLIP6 is not set
-CONFIG_WLAN=y
-# CONFIG_HOSTAP is not set
-
-#
-# Enable WiMAX (Networking options) to see the WiMAX drivers
-#
-# CONFIG_WAN is not set
-
-#
-# Character devices
-#
-CONFIG_UNIX98_PTYS=y
-# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set
-CONFIG_LEGACY_PTYS=y
-CONFIG_LEGACY_PTY_COUNT2
-# CONFIG_N_GSM is not set
-# CONFIG_TRACE_SINK is not set
-CONFIG_DEVKMEM=y
-# CONFIG_HW_RANDOM is not set
-CONFIG_UML_RANDOM=y
-# CONFIG_R3964 is not set
-# CONFIG_NSC_GPIO is not set
-# CONFIG_RAW_DRIVER is not set
-
-#
-# PPS support
-#
-# CONFIG_PPS is not set
-
-#
-# PPS generators support
-#
-
-#
-# PTP clock support
-#
-
-#
-# Enable Device Drivers -> PPS to see the PTP clock options.
-#
-# CONFIG_POWER_SUPPLY is not set
-# CONFIG_THERMAL is not set
-# CONFIG_WATCHDOG is not set
-# CONFIG_REGULATOR is not set
-CONFIG_SOUND_OSS_CORE_PRECLAIM=y
-# CONFIG_MEMSTICK is not set
-# CONFIG_NEW_LEDS is not set
-# CONFIG_ACCESSIBILITY is not set
-# CONFIG_AUXDISPLAY is not set
-# CONFIG_UIO is not set
-
-#
-# Virtio drivers
-#
-# CONFIG_VIRTIO_BALLOON is not set
-
-#
-# Microsoft Hyper-V guest support
-#
-# CONFIG_STAGING is not set
-
-#
-# Hardware Spinlock drivers
-#
-CONFIG_IOMMU_SUPPORT=y
-# CONFIG_VIRT_DRIVERS is not set
-# CONFIG_PM_DEVFREQ is not set
-CONFIG_NET=y
-
-#
-# Networking options
-#
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-# CONFIG_UNIX_DIAG is not set
-CONFIG_XFRM=y
-# CONFIG_XFRM_USER is not set
-# CONFIG_XFRM_SUB_POLICY is not set
-# CONFIG_XFRM_MIGRATE is not set
-# CONFIG_XFRM_STATISTICS is not set
-# CONFIG_NET_KEY is not set
-CONFIG_INET=y
-# CONFIG_IP_MULTICAST is not set
-# CONFIG_IP_ADVANCED_ROUTER is not set
-# CONFIG_IP_PNP is not set
-# CONFIG_NET_IPIP is not set
-# CONFIG_NET_IPGRE_DEMUX is not set
-# CONFIG_ARPD is not set
-# CONFIG_SYN_COOKIES is not set
-# CONFIG_INET_AH is not set
-# CONFIG_INET_ESP is not set
-# CONFIG_INET_IPCOMP is not set
-# CONFIG_INET_XFRM_TUNNEL is not set
-# CONFIG_INET_TUNNEL is not set
-CONFIG_INET_XFRM_MODE_TRANSPORT=y
-CONFIG_INET_XFRM_MODE_TUNNEL=y
-CONFIG_INET_XFRM_MODE_BEET=y
-# CONFIG_INET_LRO is not set
-CONFIG_INET_DIAG=y
-CONFIG_INET_TCP_DIAG=y
-# CONFIG_INET_UDP_DIAG is not set
-# CONFIG_TCP_CONG_ADVANCED is not set
-CONFIG_TCP_CONG_CUBIC=y
-CONFIG_DEFAULT_TCP_CONG="cubic"
-# CONFIG_TCP_MD5SIG is not set
-# CONFIG_IPV6 is not set
-# CONFIG_NETWORK_SECMARK is not set
-# CONFIG_NETWORK_PHY_TIMESTAMPING is not set
-# CONFIG_NETFILTER is not set
-# CONFIG_IP_DCCP is not set
-# CONFIG_IP_SCTP is not set
-# CONFIG_RDS is not set
-# CONFIG_TIPC is not set
-# CONFIG_ATM is not set
-# CONFIG_L2TP is not set
-# CONFIG_BRIDGE is not set
-# CONFIG_NET_DSA is not set
-# CONFIG_VLAN_8021Q is not set
-# CONFIG_DECNET is not set
-# CONFIG_LLC2 is not set
-# CONFIG_IPX is not set
-# CONFIG_ATALK is not set
-# CONFIG_X25 is not set
-# CONFIG_LAPB is not set
-# CONFIG_ECONET is not set
-# CONFIG_WAN_ROUTER is not set
-# CONFIG_PHONET is not set
-# CONFIG_IEEE802154 is not set
-# CONFIG_NET_SCHED is not set
-# CONFIG_DCB is not set
-# CONFIG_BATMAN_ADV is not set
-# CONFIG_OPENVSWITCH is not set
-# CONFIG_NETPRIO_CGROUP is not set
-CONFIG_BQL=y
-
-#
-# Network testing
-#
-# CONFIG_NET_PKTGEN is not set
-# CONFIG_HAMRADIO is not set
-# CONFIG_CAN is not set
-# CONFIG_IRDA is not set
-# CONFIG_BT is not set
-# CONFIG_AF_RXRPC is not set
-CONFIG_WIRELESS=y
-# CONFIG_CFG80211 is not set
-# CONFIG_LIB80211 is not set
-
-#
-# CFG80211 needs to be enabled for MAC80211
-#
-# CONFIG_WIMAX is not set
-# CONFIG_RFKILL is not set
-# CONFIG_NET_9P is not set
-# CONFIG_CAIF is not set
-# CONFIG_CEPH_LIB is not set
-# CONFIG_NFC is not set
-
-#
-# UML Network Devices
-#
-CONFIG_UML_NET=y
-CONFIG_UML_NET_ETHERTAP=y
-CONFIG_UML_NET_TUNTAP=y
-CONFIG_UML_NET_SLIP=y
-CONFIG_UML_NET_DAEMON=y
-# CONFIG_UML_NET_VDE is not set
-CONFIG_UML_NET_MCAST=y
-# CONFIG_UML_NET_PCAP is not set
-CONFIG_UML_NET_SLIRP=y
-
-#
-# File systems
-#
-# CONFIG_EXT2_FS is not set
-# CONFIG_EXT3_FS is not set
-CONFIG_EXT4_FS=y
-CONFIG_EXT4_USE_FOR_EXT23=y
-CONFIG_EXT4_FS_XATTR=y
-# CONFIG_EXT4_FS_POSIX_ACL is not set
-# CONFIG_EXT4_FS_SECURITY is not set
-# CONFIG_EXT4_DEBUG is not set
-CONFIG_JBD2=y
-CONFIG_FS_MBCACHE=y
-CONFIG_REISERFS_FS=y
-# CONFIG_REISERFS_CHECK is not set
-# CONFIG_REISERFS_PROC_INFO is not set
-# CONFIG_REISERFS_FS_XATTR is not set
-# CONFIG_JFS_FS is not set
-# CONFIG_XFS_FS is not set
-# CONFIG_GFS2_FS is not set
-# CONFIG_BTRFS_FS is not set
-# CONFIG_NILFS2_FS is not set
-# CONFIG_FS_POSIX_ACL is not set
-CONFIG_FILE_LOCKING=y
-CONFIG_FSNOTIFY=y
-CONFIG_DNOTIFY=y
-CONFIG_INOTIFY_USER=y
-# CONFIG_FANOTIFY is not set
-CONFIG_QUOTA=y
-# CONFIG_QUOTA_NETLINK_INTERFACE is not set
-CONFIG_PRINT_QUOTA_WARNING=y
-# CONFIG_QUOTA_DEBUG is not set
-# CONFIG_QFMT_V1 is not set
-# CONFIG_QFMT_V2 is not set
-CONFIG_QUOTACTL=y
-CONFIG_AUTOFS4_FS=m
-# CONFIG_FUSE_FS is not set
-
-#
-# Caches
-#
-# CONFIG_FSCACHE is not set
-
-#
-# CD-ROM/DVD Filesystems
-#
-CONFIG_ISO9660_FS=m
-CONFIG_JOLIET=y
-# CONFIG_ZISOFS is not set
-# CONFIG_UDF_FS is not set
-
-#
-# DOS/FAT/NT Filesystems
-#
-# CONFIG_MSDOS_FS is not set
-# CONFIG_VFAT_FS is not set
-# CONFIG_NTFS_FS is not set
-
-#
-# Pseudo filesystems
-#
-CONFIG_PROC_FS=y
-CONFIG_PROC_KCORE=y
-CONFIG_PROC_SYSCTL=y
-CONFIG_PROC_PAGE_MONITOR=y
-CONFIG_SYSFS=y
-CONFIG_TMPFS=y
-# CONFIG_TMPFS_POSIX_ACL is not set
-# CONFIG_TMPFS_XATTR is not set
-# CONFIG_HUGETLB_PAGE is not set
-# CONFIG_CONFIGFS_FS is not set
-CONFIG_MISC_FILESYSTEMS=y
-# CONFIG_ADFS_FS is not set
-# CONFIG_AFFS_FS is not set
-# CONFIG_HFS_FS is not set
-# CONFIG_HFSPLUS_FS is not set
-# CONFIG_BEFS_FS is not set
-# CONFIG_BFS_FS is not set
-# CONFIG_EFS_FS is not set
-# CONFIG_LOGFS is not set
-# CONFIG_CRAMFS is not set
-# CONFIG_SQUASHFS is not set
-# CONFIG_VXFS_FS is not set
-# CONFIG_MINIX_FS is not set
-# CONFIG_OMFS_FS is not set
-# CONFIG_HPFS_FS is not set
-# CONFIG_QNX4FS_FS is not set
-# CONFIG_ROMFS_FS is not set
-# CONFIG_PSTORE is not set
-# CONFIG_SYSV_FS is not set
-# CONFIG_UFS_FS is not set
-CONFIG_NETWORK_FILESYSTEMS=y
-# CONFIG_NFS_FS is not set
-# CONFIG_NFSD is not set
-# CONFIG_CEPH_FS is not set
-# CONFIG_CIFS is not set
-# CONFIG_NCP_FS is not set
-# CONFIG_CODA_FS is not set
-# CONFIG_AFS_FS is not set
-CONFIG_NLS=y
-CONFIG_NLS_DEFAULT="iso8859-1"
-# CONFIG_NLS_CODEPAGE_437 is not set
-# CONFIG_NLS_CODEPAGE_737 is not set
-# CONFIG_NLS_CODEPAGE_775 is not set
-# CONFIG_NLS_CODEPAGE_850 is not set
-# CONFIG_NLS_CODEPAGE_852 is not set
-# CONFIG_NLS_CODEPAGE_855 is not set
-# CONFIG_NLS_CODEPAGE_857 is not set
-# CONFIG_NLS_CODEPAGE_860 is not set
-# CONFIG_NLS_CODEPAGE_861 is not set
-# CONFIG_NLS_CODEPAGE_862 is not set
-# CONFIG_NLS_CODEPAGE_863 is not set
-# CONFIG_NLS_CODEPAGE_864 is not set
-# CONFIG_NLS_CODEPAGE_865 is not set
-# CONFIG_NLS_CODEPAGE_866 is not set
-# CONFIG_NLS_CODEPAGE_869 is not set
-# CONFIG_NLS_CODEPAGE_936 is not set
-# CONFIG_NLS_CODEPAGE_950 is not set
-# CONFIG_NLS_CODEPAGE_932 is not set
-# CONFIG_NLS_CODEPAGE_949 is not set
-# CONFIG_NLS_CODEPAGE_874 is not set
-# CONFIG_NLS_ISO8859_8 is not set
-# CONFIG_NLS_CODEPAGE_1250 is not set
-# CONFIG_NLS_CODEPAGE_1251 is not set
-# CONFIG_NLS_ASCII is not set
-# CONFIG_NLS_ISO8859_1 is not set
-# CONFIG_NLS_ISO8859_2 is not set
-# CONFIG_NLS_ISO8859_3 is not set
-# CONFIG_NLS_ISO8859_4 is not set
-# CONFIG_NLS_ISO8859_5 is not set
-# CONFIG_NLS_ISO8859_6 is not set
-# CONFIG_NLS_ISO8859_7 is not set
-# CONFIG_NLS_ISO8859_9 is not set
-# CONFIG_NLS_ISO8859_13 is not set
-# CONFIG_NLS_ISO8859_14 is not set
-# CONFIG_NLS_ISO8859_15 is not set
-# CONFIG_NLS_KOI8_R is not set
-# CONFIG_NLS_KOI8_U is not set
-# CONFIG_NLS_UTF8 is not set
-
-#
-# Security options
-#
-# CONFIG_KEYS is not set
-# CONFIG_SECURITY_DMESG_RESTRICT is not set
-# CONFIG_SECURITY is not set
-# CONFIG_SECURITYFS is not set
-CONFIG_DEFAULT_SECURITY_DAC=y
-CONFIG_DEFAULT_SECURITY=""
-CONFIG_CRYPTO=y
-
-#
-# Crypto core or helper
-#
-# CONFIG_CRYPTO_FIPS is not set
-CONFIG_CRYPTO_ALGAPI=m
-CONFIG_CRYPTO_ALGAPI2=m
-CONFIG_CRYPTO_RNG=m
-CONFIG_CRYPTO_RNG2=m
-# CONFIG_CRYPTO_MANAGER is not set
-# CONFIG_CRYPTO_MANAGER2 is not set
-# CONFIG_CRYPTO_USER is not set
-# CONFIG_CRYPTO_GF128MUL is not set
-# CONFIG_CRYPTO_NULL is not set
-# CONFIG_CRYPTO_CRYPTD is not set
-# CONFIG_CRYPTO_AUTHENC is not set
-# CONFIG_CRYPTO_TEST is not set
-
-#
-# Authenticated Encryption with Associated Data
-#
-# CONFIG_CRYPTO_CCM is not set
-# CONFIG_CRYPTO_GCM is not set
-# CONFIG_CRYPTO_SEQIV is not set
-
-#
-# Block modes
-#
-# CONFIG_CRYPTO_CBC is not set
-# CONFIG_CRYPTO_CTR is not set
-# CONFIG_CRYPTO_CTS is not set
-# CONFIG_CRYPTO_ECB is not set
-# CONFIG_CRYPTO_LRW is not set
-# CONFIG_CRYPTO_PCBC is not set
-# CONFIG_CRYPTO_XTS is not set
-
-#
-# Hash modes
-#
-# CONFIG_CRYPTO_HMAC is not set
-# CONFIG_CRYPTO_XCBC is not set
-# CONFIG_CRYPTO_VMAC is not set
-
-#
-# Digest
-#
-# CONFIG_CRYPTO_CRC32C is not set
-# CONFIG_CRYPTO_GHASH is not set
-# CONFIG_CRYPTO_MD4 is not set
-# CONFIG_CRYPTO_MD5 is not set
-# CONFIG_CRYPTO_MICHAEL_MIC is not set
-# CONFIG_CRYPTO_RMD128 is not set
-# CONFIG_CRYPTO_RMD160 is not set
-# CONFIG_CRYPTO_RMD256 is not set
-# CONFIG_CRYPTO_RMD320 is not set
-# CONFIG_CRYPTO_SHA1 is not set
-# CONFIG_CRYPTO_SHA256 is not set
-# CONFIG_CRYPTO_SHA512 is not set
-# CONFIG_CRYPTO_TGR192 is not set
-# CONFIG_CRYPTO_WP512 is not set
-
-#
-# Ciphers
-#
-CONFIG_CRYPTO_AES=m
-# CONFIG_CRYPTO_AES_586 is not set
-# CONFIG_CRYPTO_ANUBIS is not set
-# CONFIG_CRYPTO_ARC4 is not set
-# CONFIG_CRYPTO_BLOWFISH is not set
-# CONFIG_CRYPTO_CAMELLIA is not set
-# CONFIG_CRYPTO_CAST5 is not set
-# CONFIG_CRYPTO_CAST6 is not set
-# CONFIG_CRYPTO_DES is not set
-# CONFIG_CRYPTO_FCRYPT is not set
-# CONFIG_CRYPTO_KHAZAD is not set
-# CONFIG_CRYPTO_SALSA20 is not set
-# CONFIG_CRYPTO_SALSA20_586 is not set
-# CONFIG_CRYPTO_SEED is not set
-# CONFIG_CRYPTO_SERPENT is not set
-# CONFIG_CRYPTO_TEA is not set
-# CONFIG_CRYPTO_TWOFISH is not set
-# CONFIG_CRYPTO_TWOFISH_586 is not set
-
-#
-# Compression
-#
-# CONFIG_CRYPTO_DEFLATE is not set
-# CONFIG_CRYPTO_ZLIB is not set
-# CONFIG_CRYPTO_LZO is not set
-
-#
-# Random Number Generation
-#
-CONFIG_CRYPTO_ANSI_CPRNG=m
-# CONFIG_CRYPTO_USER_API_HASH is not set
-# CONFIG_CRYPTO_USER_API_SKCIPHER is not set
-CONFIG_CRYPTO_HW=y
-# CONFIG_BINARY_PRINTF is not set
-
-#
-# Library routines
-#
-CONFIG_BITREVERSE=y
-CONFIG_GENERIC_FIND_FIRST_BIT=y
-CONFIG_GENERIC_IO=y
-# CONFIG_CRC_CCITT is not set
-CONFIG_CRC16=y
-# CONFIG_CRC_T10DIF is not set
-# CONFIG_CRC_ITU_T is not set
-CONFIG_CRC32=y
-# CONFIG_CRC7 is not set
-# CONFIG_LIBCRC32C is not set
-# CONFIG_CRC8 is not set
-# CONFIG_XZ_DEC is not set
-# CONFIG_XZ_DEC_BCJ is not set
-CONFIG_DQL=y
-CONFIG_NLATTR=y
-# CONFIG_AVERAGE is not set
-# CONFIG_CORDIC is not set
-
-#
-# Kernel hacking
-#
-# CONFIG_PRINTK_TIME is not set
-CONFIG_DEFAULT_MESSAGE_LOGLEVEL=4
-CONFIG_ENABLE_WARN_DEPRECATED=y
-CONFIG_ENABLE_MUST_CHECK=y
-CONFIG_FRAME_WARN\x1024
-# CONFIG_STRIP_ASM_SYMS is not set
-# CONFIG_UNUSED_SYMBOLS is not set
-# CONFIG_DEBUG_FS is not set
-# CONFIG_DEBUG_SECTION_MISMATCH is not set
-CONFIG_DEBUG_KERNEL=y
-# CONFIG_DEBUG_SHIRQ is not set
-# CONFIG_LOCKUP_DETECTOR is not set
-# CONFIG_HARDLOCKUP_DETECTOR is not set
-# CONFIG_DETECT_HUNG_TASK is not set
-CONFIG_SCHED_DEBUG=y
-# CONFIG_SCHEDSTATS is not set
-# CONFIG_TIMER_STATS is not set
-# CONFIG_DEBUG_OBJECTS is not set
-# CONFIG_DEBUG_SLAB is not set
-# CONFIG_DEBUG_RT_MUTEXES is not set
-# CONFIG_RT_MUTEX_TESTER is not set
-# CONFIG_DEBUG_SPINLOCK is not set
-# CONFIG_DEBUG_MUTEXES is not set
-# CONFIG_SPARSE_RCU_POINTER is not set
-# CONFIG_DEBUG_ATOMIC_SLEEP is not set
-# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
-# CONFIG_DEBUG_STACK_USAGE is not set
-# CONFIG_DEBUG_KOBJECT is not set
-CONFIG_DEBUG_BUGVERBOSE=y
-CONFIG_DEBUG_INFO=y
-# CONFIG_DEBUG_INFO_REDUCED is not set
-# CONFIG_DEBUG_VM is not set
-# CONFIG_DEBUG_WRITECOUNT is not set
-CONFIG_DEBUG_MEMORY_INIT=y
-# CONFIG_DEBUG_LIST is not set
-# CONFIG_TEST_LIST_SORT is not set
-# CONFIG_DEBUG_SG is not set
-# CONFIG_DEBUG_NOTIFIERS is not set
-# CONFIG_DEBUG_CREDENTIALS is not set
-CONFIG_FRAME_POINTER=y
-# CONFIG_BOOT_PRINTK_DELAY is not set
-# CONFIG_RCU_TORTURE_TEST is not set
-# CONFIG_BACKTRACE_SELF_TEST is not set
-# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
-# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
-# CONFIG_FAULT_INJECTION is not set
-# CONFIG_SYSCTL_SYSCALL_CHECK is not set
-# CONFIG_DEBUG_PAGEALLOC is not set
-# CONFIG_ATOMIC64_SELFTEST is not set
-# CONFIG_SAMPLES is not set
-# CONFIG_TEST_KSTRTOX is not set
-# CONFIG_GPROF is not set
-# CONFIG_GCOV is not set
-CONFIG_EARLY_PRINTK=y
-- 
1.8.1.4

[PATCH 4/8] m68k: Do not use SUBARCH

[Richard Weinberger]

Forces the user to specify CROSS_COMPILE at compile time instead
of automatically selecting more or less randomly a cross compiler.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/m68k/Makefile | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile
index 7f7830f..3bd6355 100644
--- a/arch/m68k/Makefile
+++ b/arch/m68k/Makefile
@@ -16,13 +16,6 @@
 
 KBUILD_DEFCONFIG := multi_defconfig
 
-ifneq ($(SUBARCH),$(ARCH))
-	ifeq ($(CROSS_COMPILE),)
-		CROSS_COMPILE := $(call cc-cross-prefix, \
-			m68k-linux-gnu- m68k-linux- m68k-unknown-linux-gnu-)
-	endif
-endif
-
 #
 #	Enable processor type. Ordering of these is important - we want to
 #	use the minimum processor type of the range we support. The logic
-- 
1.8.1.4

[PATCH 5/8] sh: Do not use SUBARCH

[Richard Weinberger]

Forces the user to specify CROSS_COMPILE at compile time instead
of automatically selecting more or less randomly a cross compiler.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/sh/Makefile | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/sh/Makefile b/arch/sh/Makefile
index aed701c..8772d11 100644
--- a/arch/sh/Makefile
+++ b/arch/sh/Makefile
@@ -9,11 +9,6 @@
 # License.  See the file "COPYING" in the main directory of this archive
 # for more details.
 #
-ifneq ($(SUBARCH),$(ARCH))
-  ifeq ($(CROSS_COMPILE),)
-    CROSS_COMPILE := $(call cc-cross-prefix, $(UTS_MACHINE)-linux-  $(UTS_MACHINE)-linux-gnu-  $(UTS_MACHINE)-unknown-linux-gnu-)
-  endif
-endif
 
 isa-y					:= any
 isa-$(CONFIG_SH_DSP)			:= sh
-- 
1.8.1.4

[PATCH 6/8] mips: Do not use SUBARCH

[Richard Weinberger]

Forces the user to specify CROSS_COMPILE at compile time instead
of automatically selecting more or less randomly a cross compiler.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/mips/Makefile | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 37f9ef3..514fea6 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -42,12 +42,6 @@ tool-archpref		= $(64bit-tool-archpref)
 UTS_MACHINE		:= mips64
 endif
 
-ifneq ($(SUBARCH),$(ARCH))
-  ifeq ($(CROSS_COMPILE),)
-    CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux-  $(tool-archpref)-linux-gnu-  $(tool-archpref)-unknown-linux-gnu-)
-  endif
-endif
-
 ifdef CONFIG_FUNCTION_GRAPH_TRACER
   ifndef KBUILD_MCOUNT_RA_ADDRESS
     ifeq ($(call cc-option-yn,-mmcount-ra-address), y)
-- 
1.8.1.4

[PATCH 7/8] unicore32: Do not use SUBARCH

[Richard Weinberger]

Forces the user to specify CROSS_COMPILE at compile time instead
of automatically selecting more or less randomly a cross compiler

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 arch/unicore32/Makefile | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/unicore32/Makefile b/arch/unicore32/Makefile
index b6f5c4c..fae00c8 100644
--- a/arch/unicore32/Makefile
+++ b/arch/unicore32/Makefile
@@ -10,11 +10,6 @@
 #
 # Copyright (C) 2002~2010 by Guan Xue-tao
 #
-ifneq ($(SUBARCH),$(ARCH))
-	ifeq ($(CROSS_COMPILE),)
-		CROSS_COMPILE := $(call cc-cross-prefix, unicore32-linux-)
-	endif
-endif
 
 LDFLAGS_vmlinux		:= -p --no-undefined -X
 
-- 
1.8.1.4

[PATCH 8/8] Makefile: Remove SUBARCH

[Richard Weinberger]

As all users of SUBARCH have been removed we can finally get
rid of it.

Signed-off-by: Richard Weinberger <richard@nod.at>
---
 Makefile         | 15 +++------------
 arch/um/Makefile |  2 +-
 2 files changed, 4 insertions(+), 13 deletions(-)

diff --git a/Makefile b/Makefile
index a5a55f4..48bd8fe 100644
--- a/Makefile
+++ b/Makefile
@@ -159,13 +159,7 @@ VPATH		:= $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
 export srctree objtree VPATH
 
 
-# SUBARCH tells the usermode build what the underlying arch is.  That is set
-# first, and if a usermode build is happening, the "ARCH=um" on the command
-# line overrides the setting of ARCH below.  If a native build is happening,
-# then ARCH is assigned, getting whatever value it gets normally, and 
-# SUBARCH is subsequently ignored.
-
-SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
+ARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
 				  -e s/sun4u/sparc64/ \
 				  -e s/arm.*/arm/ -e s/sa110/arm/ \
 				  -e s/s390x/s390/ -e s/parisc64/parisc/ \
@@ -192,7 +186,6 @@ SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \
 # "make" in the configured kernel build directory always uses that.
 # Default value for CROSS_COMPILE is not to prefix executables
 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
-ARCH		?= $(SUBARCH)
 CROSS_COMPILE	?= $(CONFIG_CROSS_COMPILE:"%"=%)
 
 # Architecture as present in compile.h
@@ -1314,11 +1307,9 @@ endif #ifeq ($(mixed-targets),1)
 PHONY += checkstack kernelrelease kernelversion image_name
 
 # UML needs a little special treatment here.  It wants to use the host
-# toolchain, so needs $(SUBARCH) passed to checkstack.pl.  Everyone
-# else wants $(ARCH), including people doing cross-builds, which means
-# that $(SUBARCH) doesn't work here.
+# toolchain, so needs $(OS_ARCH) passed to checkstack.pl.
 ifeq ($(ARCH), um)
-CHECKSTACK_ARCH := $(SUBARCH)
+CHECKSTACK_ARCH := $(OS_ARCH)
 else
 CHECKSTACK_ARCH := $(ARCH)
 endif
diff --git a/arch/um/Makefile b/arch/um/Makefile
index 5bc7892..c1b6a9b 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -156,4 +156,4 @@ endef
 include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s
 	$(call filechk,gen-asm-offsets)
 
-export USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
+export USER_CFLAGS CFLAGS_NO_HARDENING OS OS_ARCH DEV_NULL_PATH
-- 
1.8.1.4

Re: [RFC] Get rid of SUBARCH

[Geert Uytterhoeven]

On Wed, Aug 21, 2013 at 10:19 AM, Richard Weinberger <richard@nod.at> wrote:
> This series is an attempt to remove the SUBARCH make parameter.
> It as introduced at the times of Linux 2.5 for UML to tell the UML
> build system what the real architecture is.
>
> But we actually don't need SUBARCH, we can store this information
> in the .config file.

Haha, now you have OS_ARCH (shouldn't that be called HOST_ARCH?) instead,
which is available only for UM?

> The series touches also m68k, sh, mips and unicore32.
> These architectures magically select a cross compiler if ARCH != SUBARCH.
> Do really need that behavior?

This does remove functionality.
It allows to build a kernel using e.g. "make ARCH=m68k".

Perhaps this can be moved to generic code? Most (not all!) cross-toolchains
are called $ARCH-{unknown-,}linux{,-gnu}.
Exceptions are e.g. am33_2.0-linux and bfin-uclinux.

> [PATCH 1/8] um: Create defconfigs for i386 and x86_64
> [PATCH 3/8] um: Remove old defconfig

Why not merge these two, so git copy/rename detection will show only the real
changes?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [RFC] Get rid of SUBARCH

[Richard Weinberger]

Am 21.08.2013 14:07, schrieb Geert Uytterhoeven:
> On Wed, Aug 21, 2013 at 10:19 AM, Richard Weinberger <richard@nod.at> wrote:
>> This series is an attempt to remove the SUBARCH make parameter.
>> It as introduced at the times of Linux 2.5 for UML to tell the UML
>> build system what the real architecture is.
>>
>> But we actually don't need SUBARCH, we can store this information
>> in the .config file.
> 
> Haha, now you have OS_ARCH (shouldn't that be called HOST_ARCH?) instead,
> which is available only for UM?

We have already OS (which is always "Linux"), so OS_ARCH is IMHO a good choice.
UML always needs to know what the underlying arch is.

OS_ARCH is not only visible to arch/um/ because of that code in the global Makefile:

# UML needs a little special treatment here.  It wants to use the host
# toolchain, so needs $(SUBARCH) passed to checkstack.pl.  Everyone
# else wants $(ARCH), including people doing cross-builds, which means
# that $(SUBARCH) doesn't work here.
ifeq ($(ARCH), um)
CHECKSTACK_ARCH := $(SUBARCH)
else
CHECKSTACK_ARCH := $(ARCH)
endif

scripts/tags.sh also needs some work. V2 will contain a patch for that.

>> The series touches also m68k, sh, mips and unicore32.
>> These architectures magically select a cross compiler if ARCH != SUBARCH.
>> Do really need that behavior?
> 
> This does remove functionality.
> It allows to build a kernel using e.g. "make ARCH=m68k".

If this functionality is expected and has users I'll happily keep that.

> Perhaps this can be moved to generic code? Most (not all!) cross-toolchains
> are called $ARCH-{unknown-,}linux{,-gnu}.
> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.

Sounds good.

>> [PATCH 1/8] um: Create defconfigs for i386 and x86_64
>> [PATCH 3/8] um: Remove old defconfig
> 
> Why not merge these two, so git copy/rename detection will show only the real
> changes?

Will do.

Thanks,
//richard

Re: [RFC] Get rid of SUBARCH

[Rob Landley]

On 08/21/2013 07:07:33 AM, Geert Uytterhoeven wrote:
> On Wed, Aug 21, 2013 at 10:19 AM, Richard Weinberger <richard@nod.at>  
> wrote:
> > This series is an attempt to remove the SUBARCH make parameter.
> > It as introduced at the times of Linux 2.5 for UML to tell the UML
> > build system what the real architecture is.
> >
> > But we actually don't need SUBARCH, we can store this information
> > in the .config file.
> 
> Haha, now you have OS_ARCH (shouldn't that be called HOST_ARCH?)  
> instead,
> which is available only for UM?
> 
> > The series touches also m68k, sh, mips and unicore32.
> > These architectures magically select a cross compiler if ARCH !=  
> SUBARCH.
> > Do really need that behavior?
> 
> This does remove functionality.
> It allows to build a kernel using e.g. "make ARCH=m68k".

   make ARCH=m68k CROSS_COMPILE=m68k-
   make ARCH=arm CROSS_COMPILE=armv5l-
   make ARCH=sparc CROSS_COMPILE=sparc-
   make ARCH=ppc CROSS_COMPILE=powerpc-
   make ARCH=sh CROSS_COMPILE=sh4-
   make ARCH=mips CROSS_COMPILE=mipsel-
   make ARCH=x86 CROSS_COMPILE=i686-
   make ARCH=alpha CROSS_COMPILE=alpha-

Works the same way on all the targets I've tried so far. You specify  
the architecture, you specify the cross compiler prefix, you feed it a  
config file, you build.

(If a target supplies its own default cross compiler prefix I just have  
to override it with what mine's called anyway...)

> Perhaps this can be moved to generic code? Most (not all!)  
> cross-toolchains
> are called $ARCH-{unknown-,}linux{,-gnu}.
> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.

The linaro toolchain is arm-linux-gnueabihf- and the one on kernel.org  
is arm-unknown-linux-gnueabi- and the one I build is armv5l- (because  
the FSF's  
$ARCH-unknown-gnu-format-tuple-all-hail-stallman-gnu-gnu-gnu-dammit-gcc  
is just nuts: why would I say -linux- in a linux-to-linux toolchain? Do  
windows toolchains say -windows-?)

Other toolchain sources use other prefixes (-unknown- is often  
-$VENDORNAME-), and then of course there's llvm... which is why you  
specify CROSS_COMPILE= on the make command line.

Rob

Re: [RFC] Get rid of SUBARCH

[Sam Ravnborg]

> 
> > The series touches also m68k, sh, mips and unicore32.
> > These architectures magically select a cross compiler if ARCH != SUBARCH.
> > Do really need that behavior?
> 
> This does remove functionality.
> It allows to build a kernel using e.g. "make ARCH=m68k".
> 
> Perhaps this can be moved to generic code? Most (not all!) cross-toolchains
> are called $ARCH-{unknown-,}linux{,-gnu}.
> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.

Today you can specify CROSS_COMPILE in Kconfig.
With this we should be able to remove these hacks.

	Sam

Re: [RFC] Get rid of SUBARCH

[Geert Uytterhoeven]

On Wed, Aug 21, 2013 at 9:51 PM, Sam Ravnborg <sam@ravnborg.org> wrote:
>> > The series touches also m68k, sh, mips and unicore32.
>> > These architectures magically select a cross compiler if ARCH != SUBARCH.
>> > Do really need that behavior?
>>
>> This does remove functionality.
>> It allows to build a kernel using e.g. "make ARCH=m68k".
>>
>> Perhaps this can be moved to generic code? Most (not all!) cross-toolchains
>> are called $ARCH-{unknown-,}linux{,-gnu}.
>> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.
>
> Today you can specify CROSS_COMPILE in Kconfig.
> With this we should be able to remove these hacks.

The correct CROSS_COMPILE value depends on the host environment, not
on the target configuration.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [RFC] Get rid of SUBARCH

[Rob Landley]

On 08/22/2013 07:58:26 AM, Geert Uytterhoeven wrote:
> On Wed, Aug 21, 2013 at 9:51 PM, Sam Ravnborg <sam@ravnborg.org>  
> wrote:
> >> > The series touches also m68k, sh, mips and unicore32.
> >> > These architectures magically select a cross compiler if ARCH !=  
> SUBARCH.
> >> > Do really need that behavior?
> >>
> >> This does remove functionality.
> >> It allows to build a kernel using e.g. "make ARCH=m68k".
> >>
> >> Perhaps this can be moved to generic code? Most (not all!)  
> cross-toolchains
> >> are called $ARCH-{unknown-,}linux{,-gnu}.
> >> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.
> >
> > Today you can specify CROSS_COMPILE in Kconfig.
> > With this we should be able to remove these hacks.
> 
> The correct CROSS_COMPILE value depends on the host environment, not
> on the target configuration.

Actually it depends on _both_.

Rob

Re: [RFC] Get rid of SUBARCH

[David Daney]

On 08/22/2013 01:41 PM, Rob Landley wrote:
> On 08/22/2013 07:58:26 AM, Geert Uytterhoeven wrote:
>> On Wed, Aug 21, 2013 at 9:51 PM, Sam Ravnborg <sam@ravnborg.org> wrote:
>> >> > The series touches also m68k, sh, mips and unicore32.
>> >> > These architectures magically select a cross compiler if ARCH !>> SUBARCH.
>> >> > Do really need that behavior?
>> >>
>> >> This does remove functionality.
>> >> It allows to build a kernel using e.g. "make ARCH=m68k".
>> >>
>> >> Perhaps this can be moved to generic code? Most (not all!)
>> cross-toolchains
>> >> are called $ARCH-{unknown-,}linux{,-gnu}.
>> >> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.
>> >
>> > Today you can specify CROSS_COMPILE in Kconfig.
>> > With this we should be able to remove these hacks.
>>
>> The correct CROSS_COMPILE value depends on the host environment, not
>> on the target configuration.
>
> Actually it depends on _both_.
>

I think the important issue is not the exact dependencies of the value 
of CROSS_COMPILE, but rather that it varies enough that automatically 
choosing a value based on SUBARCH often gives the wrong result.

Removing SUBARCH and setting CROSS_COMPILE either from the make command 
line (or environment) or the config file, is a good idea because it 
simplifies the build system, makes things clearer, and yields more 
predictable results.

David Daney

Re: [RFC] Get rid of SUBARCH

[Rob Landley]

On 08/22/2013 03:55:20 PM, David Daney wrote:
> On 08/22/2013 01:41 PM, Rob Landley wrote:
>> On 08/22/2013 07:58:26 AM, Geert Uytterhoeven wrote:
>>> On Wed, Aug 21, 2013 at 9:51 PM, Sam Ravnborg <sam@ravnborg.org>  
>>> wrote:
>>> >> > The series touches also m68k, sh, mips and unicore32.
>>> >> > These architectures magically select a cross compiler if ARCH  
>>> !>>> SUBARCH.
>>> >> > Do really need that behavior?
>>> >>
>>> >> This does remove functionality.
>>> >> It allows to build a kernel using e.g. "make ARCH=m68k".
>>> >>
>>> >> Perhaps this can be moved to generic code? Most (not all!)
>>> cross-toolchains
>>> >> are called $ARCH-{unknown-,}linux{,-gnu}.
>>> >> Exceptions are e.g. am33_2.0-linux and bfin-uclinux.
>>> >
>>> > Today you can specify CROSS_COMPILE in Kconfig.
>>> > With this we should be able to remove these hacks.
>>> 
>>> The correct CROSS_COMPILE value depends on the host environment, not
>>> on the target configuration.
>> 
>> Actually it depends on _both_.
>> 
> 
> I think the important issue is not the exact dependencies of the  
> value of CROSS_COMPILE, but rather that it varies enough that  
> automatically choosing a value based on SUBARCH often gives the wrong  
> result.
> 
> Removing SUBARCH and setting CROSS_COMPILE either from the make  
> command line (or environment) or the config file, is a good idea  
> because it simplifies the build system, makes things clearer, and  
> yields more predictable results.
> 
> David Daney

Agreed. Expecting the build to guess the right $CROSS_COMPILE is like  
expecting it to guess the right $PATH. It should be specified, not  
heuristically probed.

Rob

Re: [RFC] Get rid of SUBARCH

[Thorsten Glaser]

On Wed, 21 Aug 2013, Richard Weinberger wrote:

> The series touches also m68k, sh, mips and unicore32.
> These architectures magically select a cross compiler if ARCH != SUBARCH.
> Do really need that behavior?

Not precisely that, but it’s very common in m68k land
to just cross-build kernels with

$ make ARCH=m68k menuconfig
$ make ARCH=m68k

Maybe a generalising of that feature, and making it
independent of SUBARCH (which can then die)?

bye,
//mirabilos
-- 
[16:04:33] bkix: "veni vidi violini"
[16:04:45] bkix: "ich kam, sah und vergeigte"...

Re: [RFC] Get rid of SUBARCH

[H. Peter Anvin]

If ARCH doesn't match uname for some definition of match?

Thorsten Glaser <t.glaser@tarent.de> wrote:
>On Wed, 21 Aug 2013, Richard Weinberger wrote:
>
>> The series touches also m68k, sh, mips and unicore32.
>> These architectures magically select a cross compiler if ARCH !>SUBARCH.
>> Do really need that behavior?
>
>Not precisely that, but it’s very common in m68k land
>to just cross-build kernels with
>
>$ make ARCH=m68k menuconfig
>$ make ARCH=m68k
>
>Maybe a generalising of that feature, and making it
>independent of SUBARCH (which can then die)?
>
>bye,
>//mirabilos

-- 
Sent from my mobile phone. Please excuse brevity and lack of formatting.