linux-kernel - Re: [PATCH] Bugfix for VMI paravirt ops

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Date:	Thu, 05 Apr 2007 18:42:17 -0700
From:	Zachary Amsden <zach@...are.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Andi Kleen <ak@...e.de>, Andrew Morton <akpm@...l.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: [PATCH] Bugfix for VMI paravirt ops

Jeremy Fitzhardinge wrote:
> Zachary Amsden wrote:
>   
>> Do you mean kmap_atomic_pfn?
>>     
>
> Yes.
>
>   
>>   kunmap_atomic can stay lazy (at least for VMI), actually, but it
>> doesn't help since it happens outside the spin lock.
>>     
>
> May as well be consistent.  Or do you mean you can't flush outside the
> spinlock, even if there's nothing pending?
>   

Consistency is good.  Flush is always fine, just an extra function call.

Zach

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