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From: "HORIGUCHI NAOYA(堀口　直也)" <naoya.horiguchi@nec.com>
To: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	David Hildenbrand <david@redhat.com>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Miaohe Lin <linmiaohe@huawei.com>,
	Liu Shixin <liushixin2@huawei.com>,
	Yang Shi <shy828301@gmail.com>,
	Oscar Salvador <osalvador@suse.de>,
	Muchun Song <songmuchun@bytedance.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 3/9] mm/hugetlb: make pud_huge() and huge_pud() aware of non-present pud entry
Date: Fri, 24 Jun 2022 08:40:43 +0000	[thread overview]
Message-ID: <20220624084042.GB2070418@hori.linux.bs1.fc.nec.co.jp> (raw)
In-Reply-To: <20220623235153.2623702-4-naoya.horiguchi@linux.dev>

Sorry, I found that $SUBJECT mentions wrong function name (I meant
follow_huge_pud(), not huge_pud()), this will be fixed in the later version.

On Fri, Jun 24, 2022 at 08:51:47AM +0900, Naoya Horiguchi wrote:
> From: Naoya Horiguchi <naoya.horiguchi@nec.com>
> 
> follow_pud_mask() does not support non-present pud entry now.  As long as
> I tested on x86_64 server, follow_pud_mask() still simply returns
> no_page_table() for non-present_pud_entry() due to pud_bad(), so no severe
> user-visible effect should happen.  But generally we should call
> follow_huge_pud() for non-present pud entry for 1GB hugetlb page.
> 
> Update pud_huge() and huge_pud() to handle non-present pud entries.  The

here the same typo, too.

- Naoya Horiguchi

> changes are similar to previous works for pud entries commit e66f17ff7177
> ("mm/hugetlb: take page table lock in follow_huge_pmd()") and commit
> cbef8478bee5 ("mm/hugetlb: pmd_huge() returns true for non-present hugepage").
> 
> Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
> ---

  reply	other threads:[~2022-06-24  8:40 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-23 23:51 [PATCH v2 0/9] mm, hwpoison: enable 1GB hugepage support (v2) Naoya Horiguchi
2022-06-23 23:51 ` [PATCH v2 1/9] mm/hugetlb: remove checking hstate_is_gigantic() in return_unused_surplus_pages() Naoya Horiguchi
2022-06-24  2:25   ` Miaohe Lin
2022-06-24  8:03     ` Muchun Song
2022-06-24  8:15       ` Miaohe Lin
2022-06-24  8:34         ` HORIGUCHI NAOYA(堀口　直也)
2022-06-24 19:11           ` Mike Kravetz
2022-06-27  6:02             ` HORIGUCHI NAOYA(堀口　直也)
2022-06-27 17:25               ` Mike Kravetz
2022-06-28  3:01                 ` Miaohe Lin
2022-06-28  8:38                 ` HORIGUCHI NAOYA(堀口　直也)
2022-06-30  2:27                   ` HORIGUCHI NAOYA(堀口　直也)
2022-06-23 23:51 ` [PATCH v2 2/9] mm/hugetlb: separate path for hwpoison entry in copy_hugetlb_page_range() Naoya Horiguchi
2022-06-24  9:23   ` Miaohe Lin
2022-06-27  6:06     ` HORIGUCHI NAOYA(堀口　直也)
2022-06-24 20:57   ` Mike Kravetz
2022-06-27  6:48     ` HORIGUCHI NAOYA(堀口　直也)
2022-06-27  7:57   ` Muchun Song
2022-06-23 23:51 ` [PATCH v2 3/9] mm/hugetlb: make pud_huge() and huge_pud() aware of non-present pud entry Naoya Horiguchi
2022-06-24  8:40   ` HORIGUCHI NAOYA(堀口　直也) [this message]
2022-06-25  0:02   ` Mike Kravetz
2022-06-27  7:07     ` HORIGUCHI NAOYA(堀口　直也)
2022-06-25  9:42   ` Miaohe Lin
2022-06-27  7:24     ` HORIGUCHI NAOYA(堀口　直也)
2022-06-23 23:51 ` [PATCH v2 4/9] mm, hwpoison, hugetlb: support saving mechanism of raw error pages Naoya Horiguchi
2022-06-27  3:16   ` Miaohe Lin
2022-06-27  7:56     ` HORIGUCHI NAOYA(堀口　直也)
2022-06-27  9:26   ` Muchun Song
2022-06-28  2:41     ` HORIGUCHI NAOYA(堀口　直也)
2022-06-28  6:26       ` Muchun Song
2022-06-28  7:51         ` Muchun Song
2022-06-28  8:17         ` HORIGUCHI NAOYA(堀口　直也)
2022-06-28 10:37           ` Muchun Song
2022-06-23 23:51 ` [PATCH v2 5/9] mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage Naoya Horiguchi
2022-06-27  8:32   ` Miaohe Lin
2022-06-27 11:48     ` Miaohe Lin
2022-06-23 23:51 ` [PATCH v2 6/9] mm, hwpoison: set PG_hwpoison for busy hugetlb pages Naoya Horiguchi
2022-06-27  8:39   ` Miaohe Lin
2022-06-23 23:51 ` [PATCH v2 7/9] mm, hwpoison: make __page_handle_poison returns int Naoya Horiguchi
2022-06-27  9:02   ` Miaohe Lin
2022-06-28  6:02     ` HORIGUCHI NAOYA(堀口　直也)
2022-06-23 23:51 ` [PATCH v2 8/9] mm, hwpoison: skip raw hwpoison page in freeing 1GB hugepage Naoya Horiguchi
2022-06-27 12:24   ` Miaohe Lin
2022-06-23 23:51 ` [PATCH v2 9/9] mm, hwpoison: enable memory error handling on " Naoya Horiguchi
2022-06-28  2:06   ` Miaohe Lin

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