Re: [PATCH V2 0/5] arm64/mm: Enable HugeTLB migration
From: Naoya Horiguchi
Date: Thu Oct 18 2018 - 22:02:46 EST
On Wed, Oct 17, 2018 at 01:49:17PM +0530, Anshuman Khandual wrote:
> On 10/12/2018 09:29 AM, Anshuman Khandual wrote:
> > This patch series enables HugeTLB migration support for all supported
> > huge page sizes at all levels including contiguous bit implementation.
> > Following HugeTLB migration support matrix has been enabled with this
> > patch series. All permutations have been tested except for the 16GB.
> > CONT PTE PMD CONT PMD PUD
> > -------- --- -------- ---
> > 4K: 64K 2M 32M 1G
> > 16K: 2M 32M 1G
> > 64K: 2M 512M 16G
> > First the series adds migration support for PUD based huge pages. It
> > then adds a platform specific hook to query an architecture if a
> > given huge page size is supported for migration while also providing
> > a default fallback option preserving the existing semantics which just
> > checks for (PMD|PUD|PGDIR)_SHIFT macros. The last two patches enables
> > HugeTLB migration on arm64 and subscribe to this new platform specific
> > hook by defining an override.
> > The second patch differentiates between movability and migratability
> > aspects of huge pages and implements hugepage_movable_supported() which
> > can then be used during allocation to decide whether to place the huge
> > page in movable zone or not.
> > Changes in V2:
> > - Added a new patch which differentiates migratability and movability
> > of huge pages and implements hugepage_movable_supported() function
> > as suggested by Michal Hocko.
> Hello Andrew/Michal/Mike/Naoya/Catalin,
> Just checking for an update. Does this series looks okay ?
Looks good to me. So for the series
Reviewed-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>