Could someone please help me with this? It's really important and urgent. Thanks a lot!
On Wed, Sep 23, 2015 at 1:42 PM Gohar Irfan <goharirfa...@gmail.com> wrote: > It is for a project, I'm trying to experiment with a couple of things. > > Could you please guide me how this could be achieved? Some relevant chunks > of code, perhaps? > > Thanks! > > On Wed, Sep 23, 2015 at 1:35 PM Andrew Cooper <andrew.coop...@citrix.com> > wrote: > >> On 22/09/15 20:35, Gohar Irfan wrote: >> >> Hi All, >> >> I want to know if, in the case of HVM (shadow page tables), we can change >> the machine frame number pointed to by a page table entry? >> >> >> Yes - Xen is able to change the mfn in a pte. >> >> >> An overly simplified example would be: let's say I have page number 10 >> that is pointing to machine frame number 10, but I would like it to point >> to machine frame number 1? >> >> >> Yes - that is in theory possible. >> >> >> Can this be achieved inside the "sh_page_fault" function inside >> "xen/arch/x86/mm/shadow/multi.c" as this seems like a relevant place for >> this modification to me. >> >> >> What are you trying to achieve? Modifications such as what you request >> are possible, but you are exceedingly likely to end up with memory >> corruption as a result. >> >> >> ~Andrew >> >
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