Re: [PATCH v5 6/9] KVM: MMU: introduce pte_prefetch_topup_memory_cache()

[Xiao Guangrong]

Avi Kivity wrote:
> On 07/13/2010 04:16 AM, Xiao Guangrong wrote:
>>
>>
>>> btw, what about dirty logging? will prefetch cause pages to be marked
>>> dirty?
>>>
>>> We may need to instantiate prefetched pages with spte.d=0 and examine it
>>> when tearing down the spte.
>>>
>>>      
>> Yeah, all speculative path are broken dirty bit tracking, and i guess
>> it's
>> need more review, so i plan to do it in the separate patch, i'll post
>> it after
>> this patchset merged, could you allow it?
>>
>>    
> 
> Regressions? no.  Or do you mean the problem already exists?  Where?

I mean this is a exist problem, likes invlpg, pte-write and sync-page, there are
speculative path that it's not real access, but marked dirty if pte is writable.

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