Re: 64bit startup

[Samuel Thibault]

Sergey Bugaev, le ven. 26 mai 2023 12:49:55 +0300, a ecrit:
> On Fri, May 26, 2023 at 4:32 AM Samuel Thibault <samuel.thibault@gnu.org> 
> wrote:
> > I'm trying to start a 64bit Debian/Hurd but this fails very early.
> >
> > 0xffffffff8107a712 is the *read_exec call in exec_load, which does
> > happen fine, until read_exec calls copyout, which thus apparently fails
> > somehow.
> >
> > Does that ring a bell?
> 
> So gnumach faults while loading the ELFs, before ever jumping to userspace?

Yes.

> And the addresses seem well above the 4 GB limit;

Which addresses?

> so this is probably with Luca's latest patchset. I have not tried
> that, so no, it does not ring a bell, sorry.  Maybe try what I've been
> doing: without that patchset but with the BRK_START hack.

I'm still using the BRK_START hack.

Samuel