Re: [PATCH] Revert "MIPS: make userspace mapping young by default".

[Zhou Yanjie]

Hi Thomas,

On 2021/4/23 下午10:51, Thomas Bogendoerfer wrote:
> On Tue, Apr 20, 2021 at 10:03:01PM +0800, Zhou Yanjie wrote:
> > Sorry for my carelessness, the log in the previous email was wrong, please
> > check the log in this email.
> >
> > [   53.684067] --- pte 1 = 07698685
> any chance to print the virtual address to this pte ?
>
> > [   53.687376] --- pte 3 = 07698685
> > [   53.737175] --- pte 1 = 07699685
> > [   53.740412] --- pte 3 = 07699685
> > [   53.744064] --- pte 1 = 076c3685
> > [..]
> could you print PTE, which faults ? And what is mapped there ?
>
>
> so far I haven't seen any ill-effects of the (bisected ?) patch.
> The problem I have with reverting is that IMHO we re-introduce the bug,
> which this patch fixed.


Fortunately, Mr. Huang Pei and I are in the same city. We have done 
off-line communication, and he is very generous to help troubleshoot the 
problem.


Thanks and best regards!


> Thomas.