On 07/11/2014 20:47, Mario Smarduch wrote: >> That can happen if the error occurred in the final >> copy to userspace, after page tables have been modified. > > Upon error return userspace should terminate logging, error out whether > used for migration or other use cases, with some stale spte TLBs cached > read/write, which doesn't appear to be harmful.
Fair enough; for x86 I elected to always do the TLB flush, but you can do it differently. Perhaps add a comment with the above paragraph, thouhg. > But you mention 'final copy' which makes me think I'm missing something? I meant final copy before leaving the function. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
