Commit f9afbd45b0d0 broke mips r4k.

[Rob Landley]

My aboriginal linux project builds tiny linux systems to run under  
qemu, producing as close to the same system as possible across a bunch  
of different architectures. The above change broke the mips r4k build  
I've been running under qemu.

Here's a toolchain and reproduction sequence:

  wget http://landley.net/aboriginal/bin/cross-compiler-mips.tar.bz2
  tar xvjf cross-compiler-mips.tar.bz2
  export PATH=$PWD/cross-compiler-mips/bin:$PATH
  make ARCH=mips allnoconfig KCONFIG_ALLCONFIG=miniconfig.mips
  make CROSS_COMPILE=mips- ARCH=mips

(The file miniconfig.mips is attached.)

It ends:

  CC      init/version.o
  LD      init/built-in.o
arch/mips/built-in.o: In function `local_r4k_flush_cache_page':
c-r4k.c:(.text+0xe278): undefined reference to `kvm_local_flush_tlb_all'
c-r4k.c:(.text+0xe278): relocation truncated to fit: R_MIPS_26 against  
`kvm_local_flush_tlb_all'
arch/mips/built-in.o: In function `local_flush_tlb_range':
(.text+0xe938): undefined reference to `kvm_local_flush_tlb_all'
arch/mips/built-in.o: In function `local_flush_tlb_range':
(.text+0xe938): relocation truncated to fit: R_MIPS_26 against  
`kvm_local_flush_tlb_all'
arch/mips/built-in.o: In function `local_flush_tlb_mm':
(.text+0xed38): undefined reference to `kvm_local_flush_tlb_all'
arch/mips/built-in.o: In function `local_flush_tlb_mm':
(.text+0xed38): relocation truncated to fit: R_MIPS_26 against  
`kvm_local_flush_tlb_all'
kernel/built-in.o: In function `__schedule':
core.c:(.sched.text+0x16a0): undefined reference to  
`kvm_local_flush_tlb_all'
core.c:(.sched.text+0x16a0): relocation truncated to fit: R_MIPS_26  
against `kvm_local_flush_tlb_all'
mm/built-in.o: In function `use_mm':
(.text+0x182c8): undefined reference to `kvm_local_flush_tlb_all'
mm/built-in.o: In function `use_mm':
(.text+0x182c8): relocation truncated to fit: R_MIPS_26 against  
`kvm_local_flush_tlb_all'
fs/built-in.o:(.text+0x7b50): more undefined references to  
`kvm_local_flush_tlb_all' follow
fs/built-in.o: In function `flush_old_exec':
(.text+0x7b50): relocation truncated to fit: R_MIPS_26 against  
`kvm_local_flush_tlb_all'

Revert the above commit and it builds to the end.

RobCONFIG_EXPERIMENTAL=y
CONFIG_NO_HZ=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_CC_OPTIMIZE_FOR_SIZE=y
CONFIG_PCI=y
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_SCRIPT=y
CONFIG_MAGIC_SYSRQ=y

CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_LOOP=y

CONFIG_IDE=y
CONFIG_IDE_GD=y
CONFIG_IDE_GD_ATA=y
CONFIG_BLK_DEV_IDECD=y

CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
CONFIG_BLK_DEV_SR=y
CONFIG_SCSI_LOWLEVEL=y

CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y

CONFIG_NETDEVICES=y
CONFIG_NET_ETHERNET=y
CONFIG_NET_PCI=y
CONFIG_8139CP=y

CONFIG_HW_RANDOM=y

CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_DEV=y

CONFIG_EXT4_FS=y
CONFIG_EXT4_USE_FOR_EXT23=y
CONFIG_TMPFS=y
CONFIG_MISC_FILESYSTEMS=y
CONFIG_SQUASHFS=y
CONFIG_SQUASHFS_ZLIB=y
CONFIG_DEVTMPFS=y

CONFIG_VIRTUALIZATION=y
CONFIG_VIRTIO_PCI=y
CONFIG_VIRTIO_NET=y
CONFIG_NET_9P=y
CONFIG_NET_9P_VIRTIO=y
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_9P_FS=y
CONFIG_9P_FS_POSIX_ACL=y

# More random (inexplicable) guard symbols added in 3.2.  TODO: write
# miniconfig expander that automatically sets guard symbols when setting a
# dependent symbol.

CONFIG_ETHERNET=y
CONFIG_NET_VENDOR_INTEL=y
CONFIG_NET_VENDOR_REALTEK=y
CONFIG_NET_VENDOR_AMD=y
CONFIG_NET_VENDOR_NATSEMI=y
CONFIG_NET_VENDOR_8390=y

CONFIG_MIPS_MALTA=y
CONFIG_CPU_MIPS32_R2=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
#CONFIG_PM=y
CONFIG_PCNET32=y
CONFIG_BLK_DEV_PIIX=y