Re: [RFC PATCH 3/3] mm: support free hugepage pre zero out

2020-12-22 Thread Liang Li
> > Free page reporting in virtio-balloon doesn't give you any guarantees > > regarding zeroing of pages. Take a look at the QEMU implementation - > > e.g., with vfio all reports are simply ignored. > > > > Also, I am not sure if mangling such details ("zeroing of pages") into > > the page

Re: [RFC PATCH 3/3] mm: support free hugepage pre zero out

2020-12-22 Thread David Hildenbrand
On 22.12.20 09:31, David Hildenbrand wrote: > On 22.12.20 08:49, Liang Li wrote: >> This patch add support of pre zero out free hugepage, we can use >> this feature to speed up page population and page fault handing. >> >> Cc: Alexander Duyck >> Cc: Mel Gorman >> Cc: Andrea Arcangeli >> Cc: Dan

Re: [RFC PATCH 3/3] mm: support free hugepage pre zero out

2020-12-22 Thread David Hildenbrand
On 22.12.20 08:49, Liang Li wrote: > This patch add support of pre zero out free hugepage, we can use > this feature to speed up page population and page fault handing. > > Cc: Alexander Duyck > Cc: Mel Gorman > Cc: Andrea Arcangeli > Cc: Dan Williams > Cc: Dave Hansen > Cc: David

[RFC PATCH 3/3] mm: support free hugepage pre zero out

2020-12-21 Thread Liang Li
This patch add support of pre zero out free hugepage, we can use this feature to speed up page population and page fault handing. Cc: Alexander Duyck Cc: Mel Gorman Cc: Andrea Arcangeli Cc: Dan Williams Cc: Dave Hansen Cc: David Hildenbrand Cc: Michal Hocko Cc: Andrew Morton Cc: Alex