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Re: [PATCH] linux-user: manage binfmt-misc preserve-arg[0] flag

From: Helge Deller
Subject: Re: [PATCH] linux-user: manage binfmt-misc preserve-arg[0] flag
Date: Mon, 22 Feb 2021 16:02:11 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0

On 2/22/21 3:58 PM, Michael Tokarev wrote:
22.02.2021 17:54, John Paul Adrian Glaubitz wrote:

OK, gotcha. Is it supposed to work with systemd-binfmt? It looks like it depends
on the old binfmt-support package.

the qemu 4-line patch does not depend on any particular system, it relies on a
special name of its own argv[0] when registering the binfmt entry.  In order to
utilize it, we create a special-named symlink to qemu-foo and register that one
with the binfmt-misc subsystem, no matter if it is systemd or binfmt-support or
whatever else.

... which is pretty hackish (although it apparently works; I haven't tested 

The big question remains:
Is this "hack" just a temporary workaround which should be kept, or
is the support via the kernel-patch from Laurent the long-term and better 


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