linux-kernel - Re: [stable-4.10: PATCH] xen: revert commits 72a9b186292 and da72ff5bfcb0

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Message-ID: <20170418135211.GA20659@kroah.com>
Date:   Tue, 18 Apr 2017 15:52:11 +0200
From:   Greg KH <greg@...ah.com>
To:     Juergen Gross <jgross@...e.com>
Cc:     stable@...r.kernel.org,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Julien Grall <julien.grall@....com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        Ross Lagerwall <ross.lagerwall@...rix.com>,
        xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, Anthony Liguori <aliguori@...zon.com>,
        KarimAllah Ahmed <karahmed@...zon.de>
Subject: Re: [stable-4.10: PATCH] xen: revert commits 72a9b186292 and
 da72ff5bfcb0

On Thu, Apr 13, 2017 at 06:55:54PM +0200, Greg KH wrote:
> On Thu, Apr 13, 2017 at 06:28:33PM +0200, Juergen Gross wrote:
> > On 13/04/17 18:24, Greg KH wrote:
> > > On Thu, Apr 13, 2017 at 04:49:49PM +0200, Juergen Gross wrote:
> > >> Revert commit 72a9b186292 ("xen: Remove event channel notification
> > >> through Xen PCI platform device") as the original analysis was wrong
> > >> that all the removed code isn't in use any more. As commit da72ff5bfcb0
> > >> ("partially revert xen: Remove event channel notification through Xen
> > >> PCI platform device") reverted already some parts of it revert this
> > >> commit, too.
> > >>
> > >> It is still necessary for old Xen versions (< 4.0) and for being able
> > >> to run the Linux kernel as dom0 in a nested Xen environment.
> > > 
> > > Is there a commit in Linus's tree that matches this revert as well?
> > 
> > Not yet. I'm working on it.
> 
> I'd prefer to take the same exact commit please.  That way nothing
> diverges here.

Especially as you are asking to revert patches that are already in
releases and have been out for a while.  Always get fixes into Linus's
tree first, and _then_ we can add them to stable releases.

I'm dropping this request, and the one for 4.9, from my stable "todo"
list.

thanks,

greg k-h