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Date:   Wed, 22 Nov 2023 23:21:50 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     Peter Xu <peterx@redhat.com>
Cc:     Christoph Hellwig <hch@infradead.org>,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Andrea Arcangeli <aarcange@redhat.com>,
        James Houghton <jthoughton@google.com>,
        Lorenzo Stoakes <lstoakes@gmail.com>,
        David Hildenbrand <david@redhat.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        John Hubbard <jhubbard@nvidia.com>,
        Yang Shi <shy828301@gmail.com>,
        Rik van Riel <riel@surriel.com>,
        Hugh Dickins <hughd@google.com>,
        Matthew Wilcox <willy@infradead.org>,
        Jason Gunthorpe <jgg@nvidia.com>,
        Axel Rasmussen <axelrasmussen@google.com>,
        "Kirill A . Shutemov" <kirill@shutemov.name>,
        Andrew Morton <akpm@linux-foundation.org>,
        linuxppc-dev@lists.ozlabs.org, Mike Rapoport <rppt@kernel.org>,
        Mike Kravetz <mike.kravetz@oracle.com>
Subject: Re: [PATCH RFC 06/12] mm/gup: Drop folio_fast_pin_allowed() in
 hugepd processing
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References: <20231116012908.392077-1-peterx@redhat.com>
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On Wed, Nov 22, 2023 at 10:22:11AM -0500, Peter Xu wrote:
> The other reason I feel like hugepd may or may not be further developed for
> new features like large folio is that I saw Power9 started to shift to
> radix pgtables, and afaics hugepd is only supported in hash tables
> (hugepd_ok()).  But again, I confess I know nothing about Power at all.

That alone sounds like a good reason to not bother.  So unless more
qualified people have a different opinion I'm fine with this patch
as long as you leave a comment in place, and ammend the commit message
with some of the very useful information from your mail.