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Re: [PATCH 04/11] xen: Add node argument to domain_{adjust_tot_pages,set_outstanding_pages}()
- To: Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 11 Jun 2025 15:43:10 +0200
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- Cc: Bernhard Kaindl <bernhard.kaindl@xxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Tamas K Lengyel <tamas@xxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Wed, 11 Jun 2025 13:43:29 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 14.03.2025 18:24, Alejandro Vallejo wrote:
> domain_adjust_tot_pages() decreases the outstanding claims of a domain
> as pages are allocated, so that'll need to take into account the node in
> which an allocation is done. Deallocations just pass NUMA_NO_NODE.
>
> domain_set_outstanding_pages() takes the node on which to to stake an
> exact-node claim, or NUMA_NO_NODE if it's a non-exact claim.
This doesn't fit the code, where you make both callers pass NUMA_NO_NODE.
With that it's hard to see why ...
> Not a functional change, as neither function uses the arguments for
> anything yet. It's a prerequisite to simplify for the following patch
> that introduces per-node claim counts.
... this part of the change would simplify further changes: Any actual
use of the parameter would be meaningless as long as no caller passes a
valid node ID. IOW it looks to me as if this part of the change wants
moving elsewhere.
Jan
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