Re: [PATCH v3 00/10] IOMMU memory observability

[Michal Koutný]

On Thu, Jan 04, 2024 at 02:12:26PM -0500, Pasha Tatashin <pasha.tatashin@xxxxxxxxxx> wrote:
> Yes, we will have a difference between GFP_ACCOUNT and what
> NR_IOMMU_PAGES shows. GFP_ACCOUNT is set only where it makes sense to
> charge to user processes, i.e. IOMMU Page Tables, but there more IOMMU
> shared data that should not really be charged to a specific process.

I see. I'd suggest adding this explanation to commit 10/10 message
(perhaps with some ballpark numbers of pages). In order to have a
reference and understadning if someone decided to charge (and limit) all
in the future.

Thanks,
Michal

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