[PATCH v2 0/4] ARM: mm: HugeTLB + THP support.

[steve.capper@linaro.org (Steve Capper)]

On Tue, Jun 04, 2013 at 02:03:29PM +0100, Will Deacon wrote:
> On Tue, Jun 04, 2013 at 01:56:12PM +0100, Steve Capper wrote:
> > On Mon, Jun 03, 2013 at 11:40:11AM +0100, Steve Capper wrote:
> > > On Thu, May 23, 2013 at 04:31:16PM +0100, Steve Capper wrote:
> > > > The following patches bring both HugeTLB support and Transparent
> > > > HugePage (THP) support to ARM.
> > > > 
> > > > Only long descriptors (LPAE) are supported in this series.
> > > > 
> > > > The code has been tested on an Arndale board (Exynos 5250).
> > > > 
> > > > This patch set is based on 3.10-rc2.
> > > > 
> > > > Major changes since the Patch:
> > > >  * LPAE code has been separated from non-LPAE code (this series
> > > >    is the LPAE code).
> > > >  * PROT_NONE support for HugeTLB and THP has been implemented.
> > > > 
> > > > Major changes since the RFC:
> > > >  * huge pmd sharing removed from the 3-level code as this was
> > > >    found to be very rarely, if ever?, used. This allowed for some
> > > >    code simplification.
> > > > 
> > > >  * hardware pmd bits for 2-levels of paging are now taken from
> > > >    mmu.c. Also the mapping code now uses pte/pmd bit helper
> > > >    functions rather than the custom pre-processor logic.
> > > > 
> > > > Cheers,
> > > > -- 
> > > > Steve
> > > > 
> > > 

[ ... ]

> > 
> > Just a polite ping on the above.
> > 
> > Are people happy to have this patch set merged?
> 
> Looks good to me, but worth checking that it doesn't conflict with the LPAE
> fixes I plan to send for 3.11 (since they're not terribly critical):
> 
>   https://git.kernel.org/cgit/linux/kernel/git/will/linux.git/log/?h=for-rmk/lpae
> 
> Of course, I can fix things up in my branch if necessary (just send me a
> pointer to your git repo).

Hey Will,
I've rebased the series against to 3.10-rc4, and merged in your for-rmk/lpae
branch.

It builds, and I've run my way through the libhugetlbfs unit tests
successfully on a Versatile Express (TC2 tile). I get THP collapses, splits
and allocs too when I rebuild the test suite.

It looks good to me so far.

Thanks,
-- 
Steve