On 4/21/26 15:16, Michael S. Tsirkin wrote: > On Tue, Apr 21, 2026 at 12:56:00PM +0200, David Hildenbrand (Arm) wrote: >> On 4/20/26 14:51, Michael S. Tsirkin wrote: >>> Add free_frozen_pages_hint(page, order, hints) to free a page >>> while marking it as pre-zeroed when PGHINT_ZEROED is set. >>> The PG_zeroed flag is set after __free_pages_prepare so it >>> survives on the free list. >>> >>> Add __folio_put_hint(), folio_put_hint(), and put_page_hint() >>> wrappers for the put_page path. >> >> Can we defer that change? > > We can - it's a dependency of the balloon deflate, which you asked > me to implement. I'm more interested in reporting, myself.
Just to be clear, I said: "I'd assume ordinary inflating+deflating of the balloon would also end up with pre-zeroed pages. We'd just need a (mm/balloon.c -specific) interface to tell the buddy that the pages are zeroed." So while I think there will be value in that in the futur once we figure out a clean interface, I don't recall asking you to implement that? -- Cheers, David
