From: Jason Gunthorpe <jgg@nvidia.com>
To: Peter Xu <peterx@redhat.com>
Cc: David Hildenbrand <david@redhat.com>,
Oscar Salvador <osalvador@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Muchun Song <muchun.song@linux.dev>,
SeongJae Park <sj@kernel.org>, Miaohe Lin <linmiaohe@huawei.com>,
Michal Hocko <mhocko@suse.com>,
Matthew Wilcox <willy@infradead.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>
Subject: Re: [PATCH 00/45] hugetlb pagewalk unification
Date: Mon, 8 Jul 2024 11:35:26 -0300 [thread overview]
Message-ID: <20240708143526.GE14004@nvidia.com> (raw)
In-Reply-To: <Zoax9nwi5qmgTQR4@x1n>
On Thu, Jul 04, 2024 at 10:30:14AM -0400, Peter Xu wrote:
> Hey, David,
>
> On Thu, Jul 04, 2024 at 12:44:38PM +0200, David Hildenbrand wrote:
> > There are roughly two categories of page table walkers we have:
> >
> > 1) We actually only want to walk present folios (to be precise, page
> > ranges of folios). We should look into moving away from the walk the
> > page walker API where possible, and have something better that
> > directly gives us the folio (page ranges). Any PTE batching would be
> > done internally.
This seems like a good direction for some users as well to me.
If we can reduce the number of places touching the pud/pmd/pte APIs
that is a nice abstraction to reach toward.
It naturally would remove hugepte users too.
Jason
prev parent reply other threads:[~2024-07-08 14:35 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-04 4:30 [PATCH 00/45] hugetlb pagewalk unification Oscar Salvador
2024-07-04 4:30 ` [PATCH 01/45] arch/x86: Drop own definition of pgd,p4d_leaf Oscar Salvador
2024-07-04 4:30 ` [PATCH 02/45] mm: Add {pmd,pud}_huge_lock helper Oscar Salvador
2024-07-04 15:02 ` Peter Xu
2024-07-04 4:30 ` [PATCH 03/45] mm/pagewalk: Move vma_pgtable_walk_begin and vma_pgtable_walk_end upfront Oscar Salvador
2024-07-04 4:30 ` [PATCH 04/45] mm/pagewalk: Only call pud_entry when we have a pud leaf Oscar Salvador
2024-07-04 4:30 ` [PATCH 05/45] mm/pagewalk: Enable walk_pmd_range to handle cont-pmds Oscar Salvador
2024-07-04 15:41 ` David Hildenbrand
2024-07-05 16:56 ` kernel test robot
2024-07-04 4:30 ` [PATCH 06/45] mm/pagewalk: Do not try to split non-thp pud or pmd leafs Oscar Salvador
2024-07-04 4:30 ` [PATCH 07/45] arch/s390: Enable __s390_enable_skey_pmd to handle hugetlb vmas Oscar Salvador
2024-07-04 4:30 ` [PATCH 08/45] fs/proc: Enable smaps_pmd_entry to handle PMD-mapped " Oscar Salvador
2024-07-04 4:30 ` [PATCH 09/45] mm: Implement pud-version functions for swap and vm_normal_page_pud Oscar Salvador
2024-07-04 4:30 ` [PATCH 10/45] fs/proc: Create smaps_pud_range to handle PUD-mapped hugetlb vmas Oscar Salvador
2024-07-04 4:30 ` [PATCH 11/45] fs/proc: Enable smaps_pte_entry to handle cont-pte mapped " Oscar Salvador
2024-07-04 10:30 ` David Hildenbrand
2024-07-04 4:30 ` [PATCH 12/45] fs/proc: Enable pagemap_pmd_range to handle " Oscar Salvador
2024-07-04 4:31 ` [PATCH 13/45] mm: Implement pud-version uffd functions Oscar Salvador
2024-07-05 15:48 ` kernel test robot
2024-07-05 15:48 ` kernel test robot
2024-07-04 4:31 ` [PATCH 14/45] fs/proc: Create pagemap_pud_range to handle PUD-mapped hugetlb vmas Oscar Salvador
2024-07-04 4:31 ` [PATCH 15/45] fs/proc: Adjust pte_to_pagemap_entry for " Oscar Salvador
2024-07-04 4:31 ` [PATCH 16/45] fs/proc: Enable pagemap_scan_pmd_entry to handle " Oscar Salvador
2024-07-04 4:31 ` [PATCH 17/45] mm: Implement pud-version for pud_mkinvalid and pudp_establish Oscar Salvador
2024-07-04 4:31 ` [PATCH 18/45] fs/proc: Create pagemap_scan_pud_entry to handle PUD-mapped hugetlb vmas Oscar Salvador
2024-07-04 4:31 ` [PATCH 19/45] fs/proc: Enable gather_pte_stats to handle " Oscar Salvador
2024-07-04 4:31 ` [PATCH 20/45] fs/proc: Enable gather_pte_stats to handle cont-pte mapped " Oscar Salvador
2024-07-04 4:31 ` [PATCH 21/45] fs/proc: Create gather_pud_stats to handle PUD-mapped hugetlb pages Oscar Salvador
2024-07-04 4:31 ` [PATCH 22/45] mm/mempolicy: Enable queue_folios_pmd to handle hugetlb vmas Oscar Salvador
2024-07-04 4:31 ` [PATCH 23/45] mm/mempolicy: Create queue_folios_pud to handle PUD-mapped " Oscar Salvador
2024-07-04 4:31 ` [PATCH 24/45] mm/memory_failure: Enable check_hwpoisoned_pmd_entry to handle " Oscar Salvador
2024-07-04 4:31 ` [PATCH 25/45] mm/memory-failure: Create check_hwpoisoned_pud_entry to handle PUD-mapped " Oscar Salvador
2024-07-04 4:31 ` [PATCH 26/45] mm/damon: Enable damon_young_pmd_entry to handle " Oscar Salvador
2024-07-04 4:31 ` [PATCH 27/45] mm/damon: Create damon_young_pud_entry to handle PUD-mapped " Oscar Salvador
2024-07-04 4:31 ` [PATCH 28/45] mm/damon: Enable damon_mkold_pmd_entry to handle " Oscar Salvador
2024-07-04 11:03 ` David Hildenbrand
2024-07-04 4:31 ` [PATCH 29/45] mm/damon: Create damon_mkold_pud_entry to handle PUD-mapped " Oscar Salvador
2024-07-04 4:31 ` [PATCH 30/45] mm,mincore: Enable mincore_pte_range to handle " Oscar Salvador
2024-07-04 4:31 ` [PATCH 31/45] mm/mincore: Create mincore_pud_range to handle PUD-mapped " Oscar Salvador
2024-07-04 4:31 ` [PATCH 32/45] mm/hmm: Enable hmm_vma_walk_pmd, to handle " Oscar Salvador
2024-07-04 4:31 ` [PATCH 33/45] mm/hmm: Enable hmm_vma_walk_pud to handle PUD-mapped " Oscar Salvador
2024-07-04 4:31 ` [PATCH 34/45] arch/powerpc: Skip hugetlb vmas in subpage_mark_vma_nohuge Oscar Salvador
2024-07-04 4:31 ` [PATCH 35/45] arch/s390: Skip hugetlb vmas in thp_split_mm Oscar Salvador
2024-07-04 4:31 ` [PATCH 36/45] fs/proc: Make clear_refs_test_walk skip hugetlb vmas Oscar Salvador
2024-07-04 4:31 ` [PATCH 37/45] mm/lock: Make mlock_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 38/45] mm/madvise: Make swapin_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 39/45] mm/madvise: Make madvise_cold_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 40/45] mm/madvise: Make madvise_free_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 41/45] mm/migrate_device: Make migrate_vma_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 42/45] mm/memcontrol: Make mem_cgroup_move_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 43/45] mm/memcontrol: Make mem_cgroup_count_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 44/45] mm/hugetlb_vmemmap: Make vmemmap_test_walk " Oscar Salvador
2024-07-04 4:31 ` [PATCH 45/45] mm: Delete all hugetlb_entry entries Oscar Salvador
2024-07-04 10:13 ` [PATCH 00/45] hugetlb pagewalk unification Oscar Salvador
2024-07-04 10:44 ` David Hildenbrand
2024-07-04 14:30 ` Peter Xu
2024-07-04 15:23 ` David Hildenbrand
2024-07-04 16:43 ` Peter Xu
2024-07-08 8:18 ` Oscar Salvador
2024-07-08 14:28 ` Jason Gunthorpe
2024-07-10 3:52 ` David Hildenbrand
2024-07-10 11:26 ` Oscar Salvador
2024-07-11 0:15 ` David Hildenbrand
2024-07-11 4:48 ` Oscar Salvador
2024-07-11 4:53 ` David Hildenbrand
2024-07-08 14:35 ` Jason Gunthorpe [this message]
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