Hi,
Il 22/02/23 15:44, Sergey Bugaev ha scritto:
On Sun, Feb 12, 2023 at 8:04 PM Luca Dariz <[email protected]> wrote:
-// TODO: test it before dropping ud2
- ud2
Hi; could you please tell me how you are testing this?
What userland code do you run? How does it make syscalls, does it use
lcall $7, $0 like on i386, or what?
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
