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[Xen-devel] Re: [PATCH] xen: core dom0 support

To: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH] xen: core dom0 support
From: Ingo Molnar <mingo@xxxxxxx>
Date: Mon, 2 Mar 2009 13:04:45 +0100
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
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* Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote:

> Ingo Molnar wrote:
> >>> In three years time, will we regret having merged this?
> >> Its a pretty minor amount of extra stuff on top of what's been 
> >> added over the last 3 years, so I don't think it's going to 
> >> tip the scales on its own.  I wouldn't be comfortable in 
> >> trying to merge something that's very intrusive.
> > 
> > Hm, how can the same code that you call "massive out-of-tree 
> > patches which doesn't make anyone happy" in an out of tree 
> > context suddenly become non-intrusive "minor amount of extra 
> > stuff" in an upstream context?
> The current, out-of-tree xen kernel stuff is based on 2.6.18. 
> [...]

Sure, but what i'm pointing out is the following aspect of 

>>> [...] At the moment its all running on massive out-of-tree 
>>> patches, which doesn't make anyone happy.  It's best that it 
>>> be in the mainline kernel.  You know, like we argue for 
>>> everything else.

Comparing it to a 2.6.18 base is simply misleading when it comes 
to upstreaming something. Enterprise distros will rebase, and 
their out-of-tree pile of patches will shrink.


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