Re: [PATCH] vl, qemu-config: remove -set

["Daniel P. Berrangé" <berrange@redhat.com>]

On Wed, Nov 11, 2020 at 08:57:16AM -0500, Paolo Bonzini wrote:
> -set as far as I can see has basically no use.  It was intended as an override
> mechanism for configuration files, but even configuration files themselves
> are hardly used.  Drop it with prejudice.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
>  docs/system/deprecated.rst |  6 ++++++
>  include/qemu/config-file.h |  1 -
>  qemu-options.hx            |  9 ---------
>  softmmu/vl.c               |  4 ----
>  util/qemu-config.c         | 33 ---------------------------------
>  5 files changed, 6 insertions(+), 47 deletions(-)

iotest 068 uses -set and qtest vhost-user-text.c also does

IOW, it looks like it is valid to use -set, even if you're not using
-readconfig.

Libvirt doesn't use -set, but we've had users who make use of libvirt
command line passthrough for QEMU with -set.

IOW, I'm not convinced real world usage is near zero as suggested.

Regards,
Daniel
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