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Date: Thu, 25 Nov 2021 22:52:54 +0200
From: Konstantin Belousov <kostikbel@gmail.com>
To: Kurt Jaeger <pi@freebsd.org>
Cc: current@freebsd.org
Subject: Re: VDSO on amd64
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On Thu, Nov 25, 2021 at 06:34:19AM +0100, Kurt Jaeger wrote:
> Hi!
> 
> > I have mostly finished implementation of "proper" vdso for amd64
> > native binaries, both 64bit and 32bit.  Vdso wraps signal trampolines
> > into real dynamic shared object, which is prelinked into dynamically
> > linked image.
> 
> Eleven years ago Giuseppe Cocomazzi posted this:
> 
> http://lists.freebsd.org/pipermail/freebsd-hackers/2010-April/031553.html
> 
> vdso and shared page patch
> 
> My question: What's the difference between
> 
> https://reviews.freebsd.org/D32960
> 
> and those changes from 2010 ? I'm curious and maybe a little explaination
> would help me understand what happened between 2010 and now.

No idea.  If you are so curious, read both and compare.