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Re: [PATCH 6/6] enable syscalls on x86_64

From: Sergey Bugaev
Subject: Re: [PATCH 6/6] enable syscalls on x86_64
Date: Fri, 24 Feb 2023 18:19:57 +0300

On Wed, Feb 22, 2023 at 6:31 PM Luca Dariz <luca@orpolo.org> wrote:
> yes this is the entry point through the call gate, it works with any
> 32-bit binary that you can compile on  32-bit hurd. For testing you can
> use a ramdisk, like the installer, or some simple executable (I have my
> own scripts [0] that I would like to polish and integrate somewhere).
> Note that on a 64-bit kernel the linux drivers are not integrated, and
> user-space drivers currently don't work because of missing interrupt
> support (and maybe something else).
> As far as I understand from Intel's datasheets, it should be possible to
> use a far call also from a 64-bit userspace, but I couldn't find the
> right way so far, so I was looking at the syscall/sysret mechanisms instead.
> Luca
> [0] https://gitlab.com/luckyd/gnumach/-/tree/prepare64_wip/tests

I see — cool. I'm of course interested in 64-bit userspace, so please
keep us updated on that. I could help with integrating it on the glibc


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