linux-kernel - Re: [PATCH v9 0/6] Introduce 64b relocatable kernel

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Date:   Fri, 21 Apr 2023 20:24:58 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Konstantin Ryabitsev <konstantin.ryabitsev@...ux.dev>
Cc:     Palmer Dabbelt <palmer@...belt.com>, alexghiti@...osinc.com,
        aou@...s.berkeley.edu, linux-kbuild@...r.kernel.org,
        ndesaulniers@...gle.com, linux-kernel@...r.kernel.org,
        bjorn@...nel.org, npiggin@...il.com,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-riscv@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v9 0/6] Introduce 64b relocatable kernel

On Fri, Apr 21, 2023 at 07:10:14PM +0000, Konstantin Ryabitsev wrote:
> April 21, 2023 2:59 PM, "Palmer Dabbelt" <palmer@...belt.com> wrote:
> >> riscv: Use PUD/P4D/PGD pages for the linear mapping
> >> (https://patchwork.kernel.org/project/linux-riscv/list/?series=733603)
> >> base-commit-tag: v6.3-rc1
> > 
> > The QEMU CI has some way to say "this depends on an un-merged patch set sent as $MESSAGE_ID", not
> > sure if that's a b4-ism but it's a bit less confusing.
> 
> I think it's patchwork-ism, actually. B4 will eventually learn to be
> able to include dependent series info and automatically retrieve/apply
> them in the proper order on "shazam", but it can't do that yet.

A patchwork-ism or a patchew-ism? Drew Jones was my source for this, but
he had said the thing to do in QEMU-land was put a:
Based-on: $message-id
in your cover letter for each thing that you depend on. I'm not entirely
sure if that meant each series or each patch. I think patchew picks that
up and dumps in it on a patchew github account that the CI might pick up
on. From the QEMU docs:
<quote>
It is also okay to base patches on top of other on-going work that is
not yet part of the git master branch. To aid continuous integration
tools, such as `patchew <http://patchew.org/QEMU/>`__, you should `add a
tag <https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01288.html>`__
line ``Based-on: $MESSAGE_ID`` to your cover letter to make the series
dependency obvious.
<\quote>

FWIW, my vote is for something with a message-id, rather than those
patchwork series links that you can't dump into b4!

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