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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] some questions about the HVM
Hi, At 14:00 +0000 on 26 Mar (1269612028), WangWei???? wrote: > I have a question about the VMEXIT in HVM. > Does the behavior of modifying the pte of guest OS cause a vmexit. When using shadow pagetables, yes (more precisely, modifying a page that is shadowed causes a VMEXIT). When using hardware-assisted paging (NPT or EPT), no. > If so ,the vmexit reason is page fault or something else ? It's a page fault, because shadowed pages are always mapped read-only in the shadow page tables. Why do you want to know? Cheers, Tim. -- Tim Deegan <Tim.Deegan@xxxxxxxxxx> Principal Software Engineer, XenServer Engineering Citrix Systems UK Ltd. (Company #02937203, SL9 0BG) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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