Il 12/06/2013 23:28, yongcheng.wu@xxxxxxxxxxxxx ha scritto: > I have a problem for shadow page table. why is write-protect for the > pages containing PML4/PDPT/PDT (page directory) of the guest? In > other words, need to synchronize the change of the page directory of > the guest? Shadow page tables are the combination of both the host and guest page tables into a single translation. So they need to be updated every time the host or the guest change the page tables. Updates for the host page tables are tracked with MMU notifiers; updates for the guest page tables are tracked with write protection. Paolo -- 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
