On Mon, Jun 20, 2011 at 6:53 AM, Bernd Schmidt <ber...@codesourcery.com> wrote: > On 06/20/2011 03:51 PM, H.J. Lu wrote: >> Promote pointers to Pmode when passing/returning in registers is >> a security concern. > > Whuh? >
Peter, do you think it is safe to assume upper 32bits are zero in user space for x32? Kernel isn't a problem since pointer is 64bit in kernel and we don't pass pointers on stack to kernel. -- H.J.
