linux-kernel - Re: [PATCH 05/16] iommu/io-pgtable-arm-v7s: use page allocation function provided by iommu-pages.h

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Message-ID: <CA+CK2bDFAi1+397fd4cYetUgmHxqE2hUG4fa2m9Fi3weykQdpA@mail.gmail.com>
Date:   Tue, 28 Nov 2023 17:55:07 -0500
From:   Pasha Tatashin <pasha.tatashin@...een.com>
To:     Robin Murphy <robin.murphy@....com>
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Subject: Re: [PATCH 05/16] iommu/io-pgtable-arm-v7s: use page allocation
 function provided by iommu-pages.h

> >               kmem_cache_free(data->l2_tables, table);

We only account page allocations, not subpages, however, this is
something I was surprised about this particular architecture of why do
we allocate l2 using kmem ? Are the second level tables on arm v7s
really sub-page in size?

Pasha