Re: KVM MMU: why write-protect for the pages containing PML4/PDPT/PDT (page directory) of the guest?

2013-06-13 Thread Paolo Bonzini
Il 12/06/2013 23:28, yongcheng...@i-soft.com.cn 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

Re: Re: KVM MMU: why write-protect for the pages containing PML4/PDPT/PDT (page directory) of the guest?

2013-06-13 Thread yongcheng . wu
I got it , thank you for your help. 2013/6/13 Paolo Bonzini pbonz...@redhat.com Il 12/06/2013 23:28, yongcheng...@i-soft.com.cn 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