[LinuxPPS] 18 Aug 04:22 - powerpc: Fix loss of vdso on fork on 32-bit

[linuxpps: Benjamin Herrenschmidt <>]

powerpc: Fix loss of vdso on fork on 32-bit  
  
When we fork, init_new_context() improperly resets the vdso_base  
of the new context to 0. That means that the new process loses  
access to the vdso for signal trampolines.  
  
The initialization should be unnecessary anyway as the context  
on a fresh mm should be 0 in the first place and binfmt_elf  
will initialize that value for a newly loaded process.  
  
Signed-off-by: Benjamin Herrenschmidt   
Signed-off-by: Paul Mackerras   
  
arch/powerpc/include/asm/mmu_context.h

URL: http://gitweb.enneenne.com/?p=linuxpps;a=commit;h=3fadc52b2c9171b138b93f4a0121ceba67241b3b