Re: [PATCH] linux-user,bsd-user: re-exec with G_SLICE=always-malloc

[Kyle Evans <kevans@freebsd.org>]

On Thu, Oct 6, 2022 at 11:29 AM Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> On 10/6/22 11:12, Daniel P. Berrangé wrote:
> > The only possible silver linining is that in static linked builds,
> > it appears that a QEMU constructor with priority 101, will pre-empt
> > the constructor from any library. This is kind of crazy, as it means
> > if any library or app code uses priorities, it'll get totally different
> > execution ordering depending on whether it is dynamic or statically
> > built.
>
> Plausible...
>

> > I guess we could rely on this hack if we declare that everyone using
> > binfmt is probably relying on static linked QEMU, and in non-binfmt
> > cases people can set the env var themselves.  It still feels pretty
> > dirty.
>
> ... but as you say, dirty.

FWIW, on FreeBSD at least, we don't support dynamically linked
bsd-user and I'd go as far as to say that we have no desire to change
that in the future, either -- the benefits are simply not there to
outweigh the pain for our use-cases.

Thanks,

Kyle Evans