On 06/09/17 13:14, gengdongjiu wrote: > > > On 2017/9/6 20:00, Vladimir Murzin wrote: >> On 06/09/17 11:35, gengdongjiu wrote: >>> Vladimir, >>> >>> On 2017/9/6 17:41, Vladimir Murzin wrote: >>>> Can you please elaborate on cases where PAN is not enabled? >>> >>> I mean the informal private usage, For example, he disabled the PAN dynamically to let kernel space to access the user space. >>> After he dynamic disabled the PAN, then switched to guest OS. after return to host. he found the PAN stage is modified. >>> Of cause this is not a formal usage, in our host kernel, it is always enabled, no dynamic change, but I means it may exist such cases. >>> >>> >> >> So, in short, there is no real issue with PAN, right? What about UAO? > For the PAN, if host OS dynamically enable/disable PAN should have issue. > Do you think that is not a issue as above description? > > "host OS dynamically disable the PAN, but after go back from the guest OS, The PAN is unexpectedly enabled" Do you see effect of "PAN is unexpectedly enabled"? Cheers Vladimir > >> >> Cheers >> Vladimir >> >> . >> > >
