Re: [PATCH v3 00/13] KVM: xen: update shared_info and vcpu_info handling

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On Tue, Sep 19, 2023, Paul Durrant wrote:
> On 18/09/2023 18:12, Sean Christopherson wrote:
> [snip]
> > 
> > Tag them RFC, explain your expectations, goals, and intent in the cover letter,
> > don't copy+paste cover letters verbatim between versions, and summarize the RFC(s)
> > when you get to a point where you're ready for others to jump in.  The cover
> > letter is *identical* from v1=>v2=>v3, how is anyone supposed to understand what
> > on earth is going on unless they happened to be in the same room as ya'll on
> > Friday?
> 
> The cover letter is indeed identical because the purpose of the series has
> not changed.

For anything out of the ordinary, e.g. posting v3 just a few hours after v2 is
definitely not normal, use the cover letter to call out why you're posting a
particular version of the series, not just the purpose of the series.  

> > In other words, use tags and the cover letter to communicate, don't just view the
> > cover letter as a necessary evil to get people to care about your patches.
> 
> That was not the intention at all; I put all the detailed explanation in the
> commit comments because I thought that would make review *easier*.

Per-patch comments *might* make individual patches easier to review, but (for me
at least) they are waaay less helpful for reviewing series as a whole, and all
but usless for initial triage.  E.g. for a situation like this where a series
has reached v4 before I've so much as glanced at the patches, having the history
in the cover letter allows me to catch up and get a feel for how the series got
to v4 in ~20 seconds.  With per-patch comments, I have to go find each comment
and then piece together the bigger picture.

Per-patch comments also don't work well if a version makes minor changes to a
large series (hunting through a 10+ patch series to figure out that only one patch
changed is not exactly efficient), if a patch is dropped, if there are changes to
the overall approach, etc.



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