lkml.org 
[lkml]   [2010]   [Jul]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v5 6/9] KVM: MMU: introduce pte_prefetch_topup_memory_cache()


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.



\
 
 \ /
  Last update: 2010-07-13 06:31    [from the cache]
©2003-2011 Jasper Spaans