That is mostly correct except the VMCS is per VCPU (not per-VM).
Regarding your other query, I believe you'd want to take a look at VBox/VMM/VMMAll/PGMAllBth.h and PGMAllGst.h (namely Walk, GetPage) for page traversals and lookups.
Regards, Ram. On 04/12/2013 09:09 AM, [email protected] wrote:
Any idea ? ----Messaggio originale---- Da: [email protected] Data: 9-apr-2013 9.22 A: <[email protected]> Ogg: R: Re: [vbox-dev] R: Re: I: EPT structures Just some question to understand how it works... If I understand correctly, it is in charge of VirtualBox code (running in VMX-root mode ?) the setup the VMCS area (4KB) for each VM instance. In each VMCS's area exists a field for the EPT pointer (basically the physical address in main memory of the first-level EPT paging structures) Now if that is correct, do you think it does exist other ways (including digging in the host system hosting virtualBox's process) to access & traverse those translation structures ? Thanks. ----Messaggio originale---- Da: [email protected] Data: 8-apr-2013 18.50 A: "[email protected]"<[email protected]> Cc: <[email protected]> Ogg: Re: [vbox-dev] R: Re: I: EPT structures If we find the need and time for it. In the meantime, we welcome patches :) Regards, Ram. On 04/08/2013 06:25 PM, [email protected] wrote:Is there a plan for it ? ----Messaggio originale---- Da: [email protected] Data: 8-apr-2013 16.24 A: <[email protected]> Ogg: Re: [vbox-dev] I: EPT structures The error message says it all - not implemented. Klaus On 06.04.2013 15:24, [email protected] wrote: > Any idea ? > > Thanks. > > ----Messaggio originale---- > Da: [email protected] > Data: 4-apr-2013 16.08 > A: <[email protected]> > Ogg: EPT structures > > Hi, > > posting the following question on virtualbox forum a guy suggested > to ask for it here... > > > I'm trying to use the Debug command line (VirtualBox version 4.2.10) > just to dig into some internals... > > Does it exist a way to view the EPT page table used by the processor > (core i5 in my system) when resolving a guest's virtual address into > a host physical one ? > > trying to do it: > > VBoxDbg> dphh %0 > cr3=a93ea000 idx=0i66 Extended Page Tables > EPT dumping is not yet implemented, sorry. > not present > dphh: error: DBGFR3PagingDumpEx: VERR_NOT_IMPLEMENTED > VBoxDbg> > > thanks, > Carlo. > > > _______________________________________________ vbox-dev mailing list [email protected] https://www.virtualbox.org/mailman/listinfo/vbox-dev _______________________________________________ vbox-dev mailing list [email protected] https://www.virtualbox.org/mailman/listinfo/vbox-dev_______________________________________________ vbox-dev mailing list [email protected] https://www.virtualbox.org/mailman/listinfo/vbox-dev
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