Re: [PATCH resend v6 17/30] mm: page_alloc: propagate PageReported flag across buddy splits

[Gregory Price]

On Mon, May 11, 2026 at 05:03:19AM -0400, Michael S. Tsirkin wrote:
> When a reported free page is split via expand() to satisfy a
> smaller allocation, the sub-pages placed back on the free lists
> lose the PageReported flag.  This means they will be unnecessarily
> re-reported to the hypervisor in the next reporting cycle, wasting
> work.
>

Is this issue generated by the changes in the overall patch set, or an
issue present regardless of the proposed zeroing avoidance feature?

If the former, then maybe just submit as a standalone patch, seems like
a useful improvement regardless.

If fundamentally tied to the zeroing-avoidance feature, then nudging
this to the front or end of the series (depending on conflicts) would
help focus the review of the core new feature.

~Gregory