[PATCH V4] powerpc/85xx: Add machine check handler to fix PCIe erratum on mpc85xx

[Scott Wood]

On 03/13/2013 04:40:40 AM, David Laight wrote:
> > Hmm, seems there's no probe_user_address() -- for userspace we
> > basically want the same thing minus the KERNEL_DS.  See
> > arch/powerpc/perf/callchain.c for an example.
> 
> Isn't that just copy_from_user() ?

Plus pagefault_disable/enable().

-Scott