On Sun, Jun 29, 2014 at 04:42:47PM +0300, Gleb Natapov wrote: > Please do so and let us know. Yep, just did. Reverting ae9fedc793 fixes the issue. > reinj:1 means that previous injection failed due to another #PF that > happened during the event injection itself This may happen if GDT or fist > instruction of a fault handler is not mapped by shadow pages, but here > it says that the new page fault is at the same address as the previous > one as if GDT is or #PF handler is mapped there. Strange. Especially > since #DF is injected successfully, so GDT should be fine. May be wrong > cpl makes svm crazy? Well, I'm not going to even pretend to know kvm to know *when* we're saving VMCB state but if we're saving the wrong CPL and then doing the pagetable walk, I can very well imagine if the walker gets confused. One possible issue could be U/S bit (bit 2) in the PTE bits which allows access to supervisor pages only when CPL < 3. I.e., CPL has effect on pagetable walk and a wrong CPL level could break it. All a conjecture though... -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html