Re: [PATCH v4 05/24] openrisc: head: refactor out tlb flush into it's own function
From: Stafford Horne
Date: Fri Feb 24 2017 - 14:21:20 EST
On Fri, Feb 24, 2017 at 03:54:02PM +0200, Stefan Kristiansson wrote:
> On Fri, Feb 24, 2017 at 01:48:10PM +0100, Jonas Bonn wrote:
> > On 02/24/2017 11:54 AM, Stefan Kristiansson wrote:
> > >eOn Fri, Feb 24, 2017 at 10:57:19AM +0100, Jonas Bonn wrote:
> > >>On 02/24/2017 05:32 AM, Stafford Horne wrote:
> > >>>From: Stefan Kristiansson <stefan.kristiansson@xxxxxxxxxxxxx>
> > >>>
> > >>>This brings it inline with the other setup oprations done like the cache
> > >>>enables _ic_enable and _dc_enable. Also, this is going to make it
> > >>>easier to initialize additional cpu's when smp is introduced.
> > >>This patch confuses me. The TLB flush is moved to a point after MMU's are
> > >>enabled. The TLB flush should happen before enabling the MMU, shouldn't it?
> > >>
> > >It still happens before the MMUs are enabled, the patch only refactors the code
> > >out into a function that is called from the place where it was open coded
> > >before.
> >
> > Right. What's the point of moving it then?
> >
>
> As the commit message mentions, it's a preparation patch for initialisation
> of secondary cpus, which also will call this function.
>
> Perhaps this patch should be bundled with those patches.
>
Thanks for replying on this patch, I think keeping this patch here is
ok. Since part of the theme of this series is preparing for SMP (which
will be another big series) I think its ok have any non SMP specific
work into here. Its going to make my life a bit easier going forward.
Also, as this is good refactor to get it structurally in sync with other
initializations I think its not completely out of place.
-Stafford