Re: [PATCH] mm,hwpoison: return -EBUSY when page already poisoned

[Aili Yao]

> > 
> > Returning true means you stop walking when you find the first entry pointing
> > to a given pfn. But there could be multiple such entries, so if MCE SRAR is
> > triggered by memory access to the larger address in hwpoisoned entries, the
> > returned virtual address might be wrong.
> >   
> 
> I can't find the way to fix this, maybe the virtual address is contained in
> related register, but this is really beyong my knowledge.
> 
> This is a v2 RFC patch, add support for thp and 1G huge page errors.
> 

Sorry for the debug info and other unclean modifications.

Post a clean one.

Thanks
Aili Yao