linux-kernel - Re: + stupid-hack-to-make-mainline-build.patch added to -mm tree

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Message-ID: <45F06720.8080901@goop.org>
Date:	Thu, 08 Mar 2007 11:42:24 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Chris Wright <chrisw@...s-sol.org>
CC:	Daniel Arai <arai@...are.com>,
	Virtualization Mailing List <virtualization@...ts.osdl.org>,
	akpm@...ux-foundation.org, john stultz <johnstul@...ibm.com>,
	tglx@...utronix.de, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: + stupid-hack-to-make-mainline-build.patch added to -mm tree

Chris Wright wrote:
> * Daniel Arai (arai@...are.com) wrote:
>   
>> There's no good way to override __send_IPI_shortcut.  I suppose we could add 
>> paravirt ops for __send_IPI_shortcut and every other op that touches the APIC. 
>>     
>
> While that's basically what we did in Xen, it would make more sense to
> build it into genapic which would give us one common abstraction to base
> from.  We should avoid adding pv_ops when existing infrastructure exists.
>   

I was looking at cutting in at a much higher level.  The interface in
<linux/smp.h> is a good match for Xen, so I was going to investigate
making pv_ops at that level and see how it falls out.

    J
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