linux-kernel - Re: [RFC PATCH 00/17] virtual-bus

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Date:	Fri, 03 Apr 2009 14:46:54 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Gerd Hoffmann <kraxel@...hat.com>,
	Herbert Xu <herbert@...dor.apana.org.au>, ghaskins@...ell.com,
	anthony@...emonkey.ws, linux-kernel@...r.kernel.org, agraf@...e.de,
	pmullaney@...ell.com, pmorreale@...ell.com, rusty@...tcorp.com.au,
	netdev@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [RFC PATCH 00/17] virtual-bus

Andi Kleen wrote:
>> Check shared ring status when stuffing a request.  If there are requests
>>     
>
> That means you're bouncing cache lines all the time. Probably not a big
> issue on single socket but could be on larger systems.
>   

That's why I'd like requests to be handled on the vcpu thread rather 
than an auxiliary thread.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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