[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH v11 1/2] docs: improve qcow2 spec about extending image heade

From: Alberto Garcia
Subject: Re: [PATCH v11 1/2] docs: improve qcow2 spec about extending image header
Date: Fri, 31 Jan 2020 18:13:05 +0100
User-agent: Notmuch/0.18.2 (http://notmuchmail.org) Emacs/24.4.1 (i586-pc-linux-gnu)

On Fri 31 Jan 2020 03:22:18 PM CET, Vladimir Sementsov-Ogievskiy wrote:
> Make it more obvious how to add new fields to the version 3 header and
> how to interpret them.
> The specification is adjusted so that for new defined optional fields:
> 1. Software may support some of these optional fields and ignore the
>    others, which means that features may be backported to downstream
>    Qemu independently.
> 2. If we want to add incompatible field (or a field, for which some its
>    values would be incompatible), it must be accompanied by
>    incompatible feature bit.
> Also the concept of "default is zero" is clarified, as it's strange to
> say that the value of the field is assumed to be zero for the software
> version which don't know about the field at all and don't know how to
> treat it be it zero or not.
> Signed-off-by: Vladimir Sementsov-Ogievskiy <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>

Reviewed-by: Alberto Garcia <address@hidden>


reply via email to

[Prev in Thread] Current Thread [Next in Thread]