Re: [PATCH] arm64: KVM: VHE: save and restore some PSTATE bits

[Vladimir Murzin]

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?

Cheers
Vladimir