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    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.

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