linux-kernel - Re: [kvm-devel] [PATCH][RFC] kvm-scheduler integration

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Message-ID: <46946FB9.5040705@qumranet.com>
Date:	Wed, 11 Jul 2007 08:50:49 +0300
From:	Avi Kivity <avi@...ranet.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Ingo Molnar <mingo@...e.hu>, kvm-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [kvm-devel] [PATCH][RFC] kvm-scheduler integration

Avi Kivity wrote:
>
>> The
>> congruent case which comes to mind is lazy FPU handling.
>>   
>
> That one has preempt_ops in hardware: cr0.ts and #NM.

However, that doesn't handle in-kernel use of the fpu.  
kernel_fpu_begin()/kernel_fpu_end() could easily be modified to take 
advantage of a generic preempt hook.  I'll add a patch for that, and we 
gain preemptible raid-5 parity calculation.


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

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