Subject: Re: [PATCH] powerpc: thp: Use tlbiel wherever possible

From: Benjamin Herrenschmidt <[email-masked]>
Date: Thu, 07 Aug 2014 06:30:40 +1000

On Wed, 2014-08-06 at 20:16 +0530, Aneesh Kumar K.V wrote:
> "Aneesh Kumar K.V" <[email-masked]> writes:
> 
> > If we know that user address space has never executed on other cpus
> > we could use tlbiel.
> >
> > Signed-off-by: Aneesh Kumar K.V <[email-masked]>
> 
> Now checking against flush_hash_page, I am wondering whether I need to handle
> transcational memory in case of tlbiel ? Michael, can you let me know if
> this is needed ?

Also, beware that we have code that sets "tlbiel" in the page definition
array to 0 on all but 4k and 64k pages...

Cheers,
Ben.