Bug#724320: gmp: x32: sizeof(mp_limb_t)!=sizeof(void*) is not supported by GAP and PARI

Mike Frysinger vapier at gentoo.org
Fri Oct 4 07:45:35 CEST 2013

On Wednesday 02 October 2013 17:03:44 Vincent Lefevre wrote:
> On 2013-10-02 09:16:10 -0700, Daniel Schepler wrote:
> > Is your kernel built with x32 support?  (Check for CONFIG_X86_X32=y in
> > /boot/config-*.)
> It doesn't, and there's actually a RFE:
>   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=708070
> but it's not enabled for "security" reasons (I won't discuss that).

x32 doesn't increase the attack surface if you already have x86 ABI compat 
enabled.  it merely does a merge of x86 & x86_64 syscalls where it makes 
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