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Re: [Xen-devel] Re: [GIT PULL] Xen for 2.6.30 #2

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: [GIT PULL] Xen for 2.6.30 #2
From: Ingo Molnar <mingo@xxxxxxx>
Date: Fri, 3 Apr 2009 19:36:23 +0200
Cc: the arch/x86 maintainers <x86@xxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
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* Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

>> You know our stance which is very simple: dont put in Xen-only 
>> hooks that slow down native, and get rid of the existing Xen-only 
>> hooks.
> Yes, I understand that.  Unlike the pvops stuff, the dom0 changes 
> are largely all init-time and setup, and so have no performance 
> impact.

Yes, but once dom0 goes in your incentive to fix the native kernel 
performance drain we accumulated along the years of paravirt layers 
will be strongly weakened, right? :)


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