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Re: [PATCH mig] Make MIG work for pure 64 bit kernel and userland.


From: Sergey Bugaev
Subject: Re: [PATCH mig] Make MIG work for pure 64 bit kernel and userland.
Date: Sun, 12 Feb 2023 19:05:09 +0300

On Sun, Feb 12, 2023 at 7:01 PM Luca <luca@orpolo.org> wrote:
> It seems XNU's mig [0] always sets the alignment to natural_t (=4) with
> a #pragma... I still have to understand how they handle these issues.

Please note that XNU uses "untyped messaging", and Apple's version of
MIG is "untyped MIG". They don't have the kernel parse the message
body, it just passes it to the receiver task as a blob, where it's up
to MIG again to make sense of it.

Sergey



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