[PATCH] powerpc: thp: Use tlbiel wherever possible

[Michael Neuling]

On Wed, 2014-08-06 at 20:16 +0530, Aneesh Kumar K.V wrote:
> "Aneesh Kumar K.V" <aneesh.kumar at linux.vnet.ibm.com> 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 <aneesh.kumar at linux.vnet.ibm.com>
> 
> 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 ?

Yeah, you do need to add something.  

local tlbie won't abort the transaction (broadcast will abort), so you
need to do a explicit tabort if there is an active transaction, to make
sure the transaction is doomed.

Mikey