linux-kernel - Re: [RFC PATCH v2 37/47] hugetlb: remove huge_pte_lock and huge_pte

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Message-ID: <Y3VFMs3a6LQy1BnZ@x1n>
Date:   Wed, 16 Nov 2022 15:16:50 -0500
From:   Peter Xu <peterx@...hat.com>
To:     James Houghton <jthoughton@...gle.com>
Cc:     Mike Kravetz <mike.kravetz@...cle.com>,
        Muchun Song <songmuchun@...edance.com>,
        David Hildenbrand <david@...hat.com>,
        David Rientjes <rientjes@...gle.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Mina Almasry <almasrymina@...gle.com>,
        Zach O'Keefe <zokeefe@...gle.com>,
        Manish Mishra <manish.mishra@...anix.com>,
        Naoya Horiguchi <naoya.horiguchi@....com>,
        "Dr . David Alan Gilbert" <dgilbert@...hat.com>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Yang Shi <shy828301@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v2 37/47] hugetlb: remove huge_pte_lock and
 huge_pte_lockptr

On Fri, Oct 21, 2022 at 04:36:53PM +0000, James Houghton wrote:
> They are replaced with hugetlb_pte_lock{,ptr}. All callers that haven't
> already been replaced don't get called when using HGM, so we handle them
> by populating hugetlb_ptes with the standard, hstate-sized huge PTEs.

I didn't yet check the rational at all, but just noticed there's one more
of it for ppc code:

*** arch/powerpc/mm/pgtable.c:
huge_ptep_set_access_flags[264] assert_spin_locked(huge_pte_lockptr(huge_page_shift(h),

-- 
Peter Xu