[v3][PATCH 2/3] ppc/kprobe: complete kprobe and migrate exception frame

Benjamin Herrenschmidt benh at kernel.crashing.org
Wed Sep 12 20:38:16 EST 2012

On Wed, 2012-09-12 at 16:55 +0800, tiejun.chen wrote:
> > to worry about nor stack frame to create etc...
> If you don't like this v4, let me know and then I can go back memcpy
> for next 
> version. 

Just open code the whole copy. It should be easy really. As I said, you
have the src and dst already in registers and you know they are aligned,
so just put the size of the frame in a register (divided by 4), do an
mtctr and do a little load_update/store_update loop to do the copy, all
in the asm.


More information about the Linuxppc-dev mailing list