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Re: [PATCH v5 1/8] qemu-options: New -compat to set policy for deprecate

From: Eric Blake
Subject: Re: [PATCH v5 1/8] qemu-options: New -compat to set policy for deprecated interfaces
Date: Mon, 14 Sep 2020 10:08:50 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0

On 9/14/20 3:47 AM, Markus Armbruster wrote:
Policy is separate for input and output.

Input policy can be "accept" (accept silently), or "reject" (reject
the request with an error).

Output policy can be "accept" (pass on unchanged), or "hide" (filter
out the deprecated parts).

Default is "accept".  Policies other than "accept" are implemented
later in this series.

For now, -compat covers only syntactic aspects of QMP, i.e. stuff
tagged with feature 'deprecated'.  We may want to extend it to cover
semantic aspects, CLI, and experimental features.

The option is experimental.

Signed-off-by: Markus Armbruster <armbru@redhat.com>

Reviewed-by: Eric Blake <eblake@redhat.com>

But as Peter points out, where is the introspection for whether this command line argument exists?

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3226
Virtualization:  qemu.org | libvirt.org

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