Re: Use PROT_NONE for unused virtual stack memory

[Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>]

On Sun, Jan 29, 2017 at 04:30:32PM +0100, Jeroen Demeyer wrote:
> On 2017-01-28 15:48, Bill Allombert wrote:
> >This works fine with --disable-mmap.
> 
> Why don't you do that then? Emscripten needs to emulate mmap() somehow and I
> guess that it doesn't fully support the non-trivial usage introduced by this
> patch. I don't think that this is a problem, the simple PARI stack model
> with --disable-mmap should be sufficient.

Giving up on mmap on emscripten after it worked fine for one year would not
be very constructive. I already spend quite a bit of time investigating why 
ellinit("11a1") did not work anymore.

At the very least, the difference of speed and behaviour of
--disable-mmap and --enable-mmap on emscripten would need to be clearly
established.

Cheers,
Bill.