linux-kernel - Re: [PATCH v2] PCI: hv: Fix the definition of vector in hv_compose_msi

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Date:   Thu, 30 Mar 2023 22:56:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Dexuan Cui <decui@...rosoft.com>
Cc:     "quic_jhugo@...cinc.com" <quic_jhugo@...cinc.com>,
        "quic_carlv@...cinc.com" <quic_carlv@...cinc.com>,
        Boqun Feng <boqun.feng@...il.com>,
        "wei.liu@...nel.org" <wei.liu@...nel.org>,
        KY Srinivasan <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        "sthemmin@...rosoft.com" <sthemmin@...rosoft.com>,
        "lpieralisi@...nel.org" <lpieralisi@...nel.org>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Michael Kelley (LINUX)" <mikelley@...rosoft.com>,
        "robh@...nel.org" <robh@...nel.org>, "kw@...ux.com" <kw@...ux.com>,
        "helgaas@...nel.org" <helgaas@...nel.org>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH v2] PCI: hv: Fix the definition of vector in
 hv_compose_msi_msg()

On Thu, Mar 30, 2023 at 07:50:11PM +0000, Dexuan Cui wrote:
> > From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > > ...
> > > e70af8d040d2 has a Fixes tag. Not sure why it's not automatically
> > backported.
> > 
> > Because "Fixes:" is not the flag that we are sure to trigger off of.
> > Please read:
> > https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
> > for how to do this properly.
> 
> Thanks, I just read this again to refresh my memory :-)
> I remember Sasha has an AI algorithm to pick up patches into the stable
> tree and a "Fixes" tag should be a strong indicator. 

Yes, we have to rely on "hints" like that due to maintainers not wanting
to put any cc: stable tags for many subsystems so we have to dig them
out somehow.

> If I add the cc: stable line in a patch and use git-send-email to post
> the patch, git-send-email also posts the patch to the stable list -- is
> this acceptable?

Totally acceptable.

> Sometimes a patch may have to undergo multiple
> revisions, meaning all the discussion emails go to the stable list
> unnecessarily, and I guess this is not good?

It's not a problem at all, happens all the time and in fact I like it as
it gives us a heads-up that a patch is going to be eventually merged for
us to handle.

> It looks like there is no git-send-email option to exclude an email.

No need to, don't worry about that at all.

thanks,

greg k-h