linux-kernel - Re: [PATCH 02/11] Add "handle page fault" PV helper.

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Message-ID: <4AF6C112.4010601@redhat.com>
Date:	Sun, 08 Nov 2009 15:01:06 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Gleb Natapov <gleb@...hat.com>, kvm@...r.kernel.org,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Fr??d??ric Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH 02/11] Add "handle page fault" PV helper.

On 11/08/2009 02:51 PM, Ingo Molnar wrote:
>> Maybe we should generalize paravirt-ops patching in case if (x) f() is
>> deemed too expensive.
>>      
> Yes, that's a nice idea. We have quite a number of 'conditional
> callbacks' in various critical paths that could be made lighter via such
> a technique.
>
> It would also free new callbacks from the 'it increases overhead even if
> unused' criticism and made it easier to add them.
>    

We can take the "immediate values" infrastructure as a first step.  Has 
that been merged?

-- 
error compiling committee.c: too many arguments to function

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