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 >
_______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
