x32 abi support?

Peter Robinson pbrobinson at gmail.com
Thu May 17 10:15:14 UTC 2012


On Thu, May 17, 2012 at 5:19 AM, Matthew Garrett <mjg59 at srcf.ucam.org> wrote:
> On Thu, May 17, 2012 at 12:28:29AM +0200, Xose Vazquez Perez wrote:
>> Matthew Garrett wrote:
>>
>> > [...]
>> >So, overall, x32 is only really beneficial for embedded platforms rather
>> >than general purpose ones. As Josh says, if there's sufficient interest
>> >then it could potentially be implemented as a separate architecture and
>> >spend some time in secondary, but I don't know that there'd be a huge
>> >benefit to Fedora to spend much time on it.
>>
>> x32 makes intel be faster Atom Z2460 [1]
>
> I can't find any x86_64/ia32/x32 benchmarks in that article? Regardless,
> I'd agree that x32 is potentially useful on heavily resource-constrained
> interactive devices like phones. The quesiton is whether it's useful for
> any of the platforms that Fedora targets. Virtualisation is something I
> hadn't considered and it may be that there are benefits there, but I'd
> still appreciate some real figures before encouraging people to spend
> time on it.

I believe you would lose a lot of the advantages of the memory
reduction by the use of memory dedupe/merging/compression on the host
hypervisor which makes some of the memory saving advantage less of a
win.

Peter


More information about the devel mailing list