[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <3aeb6dfe-ae23-42f9-ac23-16be6b54a850@www.fastmail.com>
Date: Tue, 02 Jun 2020 17:13:25 +0200
From: "Daniel Kolesa" <daniel@...aforge.org>
To: Michal Suchánek <msuchanek@...e.de>,
"Joseph Myers" <joseph@...esourcery.com>
Cc: libc-alpha@...rceware.org, eery@...erfox.es, musl@...ts.openwall.com,
"Will Springer" <skirmisher@...tonmail.com>,
"Palmer Dabbelt via binutils" <binutils@...rceware.org>,
"via libc-dev" <libc-dev@...ts.llvm.org>, linuxppc-dev@...ts.ozlabs.org
Subject: Re: ppc64le and 32-bit LE userland compatibility
On Tue, Jun 2, 2020, at 16:23, Michal Suchánek wrote:
> On Tue, Jun 02, 2020 at 01:40:23PM +0000, Joseph Myers wrote:
> > On Tue, 2 Jun 2020, Daniel Kolesa wrote:
> >
> > > not be limited to being just userspace under ppc64le, but should be
> > > runnable on a native kernel as well, which should not be limited to any
> > > particular baseline other than just PowerPC.
> >
> > This is a fairly unusual approach to bringing up a new ABI. Since new
> > ABIs are more likely to be used on new systems rather than switching ABI
> > on an existing installation, and since it can take quite some time for all
> > the software support for a new ABI to become widely available in
> > distributions, people developing new ABIs are likely to think about what
> > new systems are going to be relevant in a few years' time when working out
> > the minimum hardware requirements for the new ABI. (The POWER8 minimum
> > for powerpc64le fits in with that, for example.)
> That means that you cannot run ppc64le on FSL embedded CPUs (which lack
> the vector instructions in LE mode). Which may be fine with you but
> other people may want to support these. Can't really say if that's good
> idea or not but I don't foresee them going away in a few years, either.
well, ppc64le already cannot be run on those, as far as I know (I don't think it's possible to build ppc64le userland without VSX in any configuration)
>
> Thanks
>
> Michal
>
Daniel
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
