build error

[Giuseppe Falsetti <giuseppe@czero.it>]

Hi,
I get this error when compile the git tree virt/kvm/kvm.git next

My machine is a Xserve G5 DUAL processor, Lenny with gcc-4.3.2

HOSTCC  scripts/bin2c
  HOSTLD  scripts/mod/modpost
  CALL    scripts/checksyscalls.sh
<stdin>:1523:2: warning: #warning syscall recvmmsg not implemented
  CC      init/main.o
  HOSTCC  usr/gen_init_cpio

[...]

  LD      arch/powerpc/platforms/built-in.o
  CC      arch/powerpc/kernel/pci_dn.o
  LD      arch/powerpc/math-emu/built-in.o
  CC      arch/powerpc/kernel/isa-bridge.o
  CC      arch/powerpc/kvm/book3s_64_exports.o
  CC      arch/powerpc/kernel/pci-common.o
  CC      arch/powerpc/kvm/../../../virt/kvm/kvm_main.o
  CC      arch/powerpc/kernel/pci_of_scan.o
  CC      arch/powerpc/kvm/../../../virt/kvm/coalesced_mmio.o
  CC      arch/powerpc/kvm/powerpc.o
  CC      arch/powerpc/kernel/msi.o
  CC      arch/powerpc/kernel/machine_kexec.o
  CC      arch/powerpc/kvm/emulate.o
  CC      arch/powerpc/kernel/crash.o
  CC      arch/powerpc/kvm/book3s.o
cc1: warnings being treated as errors
arch/powerpc/kvm/book3s.c: In function 'kvm_vm_ioctl_get_dirty_log':
arch/powerpc/kvm/book3s.c:860: error: passing argument 1 of 'down_write' 
from incompatible pointer type
arch/powerpc/kvm/book3s.c:868: error: assignment from incompatible 
pointer type
arch/powerpc/kvm/book3s.c:882: error: passing argument 1 of 'up_write' 
from incompatible pointer type
make[2]: *** [arch/powerpc/kvm/book3s.o] Error 1
make[1]: *** [arch/powerpc/kvm] Error 2
make[1]: *** Waiting for unfinished jobs....
  CC      arch/powerpc/kernel/machine_kexec_64.o
  CC      arch/powerpc/kernel/audit.o
make[1]: Leaving directory `/usr/src/linux'
make: *** [debian/stamp/build/kernel] Error 2


Thansk for all your work on book3s.

Giuseppe.