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Re: 64bit startup

From: Sergey Bugaev
Subject: Re: 64bit startup
Date: Fri, 26 May 2023 12:49:55 +0300


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?

And the addresses seem well above the 4 GB limit; 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. That seems to have worked for Flavio too, judging by
the commits in the cross-hurd repo.


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