On Tue, Apr 17, 2012 at 08:50:25AM -0700, Kees Cook wrote: > On Tue, Apr 17, 2012 at 11:08:41AM +0100, Colin Watson wrote: > > On Tue, Apr 17, 2012 at 02:14:26AM +0200, Pavel Rojtberg wrote: > > > I would not bet that 14.04 users necessarily will have to get 64bit. > > > There is the recent x32-abi[1] development which kind of combines > > > best of both worlds.
> > Is it worth a UDS session on how we might make use of x32? Since the > > patches aren't e.g. on glibc trunk yet, I don't think we can reasonably > > make any concrete plans, but perhaps we should be thinking in advance > > about issues such as partial architectures that x32 brings up. > It's worth noting that running x32 requires a 64-bit kernel. Moving > to x32 would be as big a deal (if not more) as moving to x86_64 from > ia32. And personally, I think just moving to x86_64 is the better goal. :) x32 is meant to be a compromise that gets us the major benefits of x86_64 (better instruction set) without the drawbacks (more memory pressure). While it's not standardized or proven yet, I think it's definitely worth keeping an eye on. We might really find that we don't want x86_64 by default in 2-4 years because x32 is proving the better choice. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer http://www.debian.org/ [email protected] [email protected]
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