From: Dev Jain <dev.jain@arm.com>
To: David Hildenbrand <david@redhat.com>, linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Jann Horn <jannh@google.com>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>, Zi Yan <ziy@nvidia.com>,
Matthew Brost <matthew.brost@intel.com>,
Joshua Hahn <joshua.hahnjy@gmail.com>,
Rakie Kim <rakie.kim@sk.com>, Byungchul Park <byungchul@sk.com>,
Gregory Price <gourry@gourry.net>,
Ying Huang <ying.huang@linux.alibaba.com>,
Alistair Popple <apopple@nvidia.com>,
Pedro Falcato <pfalcato@suse.de>, Rik van Riel <riel@surriel.com>,
Harry Yoo <harry.yoo@oracle.com>,
Lance Yang <ioworker0@gmail.com>,
Oscar Salvador <osalvador@suse.de>,
Lance Yang <lance.yang@linux.dev>
Subject: Re: [PATCH v2 1/4] mm: convert FPB_IGNORE_* into FPB_RESPECT_*
Date: Thu, 3 Jul 2025 15:35:21 +0530 [thread overview]
Message-ID: <460a0098-34ec-4ed4-8469-67b0f8a602d5@arm.com> (raw)
In-Reply-To: <20250702104926.212243-2-david@redhat.com>
On 02/07/25 4:19 pm, David Hildenbrand wrote:
> Respecting these PTE bits is the exception, so let's invert the meaning.
>
> With this change, most callers don't have to pass any flags. This is
> a preparation for splitting folio_pte_batch() into a non-inlined
> variant that doesn't consume any flags.
>
> Long-term, we want folio_pte_batch() to probably ignore most common
> PTE bits (e.g., write/dirty/young/soft-dirty) that are not relevant for
> most page table walkers: uffd-wp and protnone might be bits to consider in
> the future. Only walkers that care about them can opt-in to respect them.
>
> No functional change intended.
>
> Reviewed-by: Lance Yang <lance.yang@linux.dev>
> Reviewed-by: Zi Yan <ziy@nvidia.com>
> Reviewed-by: Oscar Salvador <osalvador@suse.de>
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>
Reviewed-by: Dev Jain <dev.jain@arm.com>
next prev parent reply other threads:[~2025-07-03 10:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-02 10:49 [PATCH v2 0/4] mm: folio_pte_batch() improvements David Hildenbrand
2025-07-02 10:49 ` [PATCH v2 1/4] mm: convert FPB_IGNORE_* into FPB_RESPECT_* David Hildenbrand
2025-07-03 10:05 ` Dev Jain [this message]
2025-07-02 10:49 ` [PATCH v2 2/4] mm: smaller folio_pte_batch() improvements David Hildenbrand
2025-07-02 14:24 ` Zi Yan
2025-07-03 10:18 ` Dev Jain
2025-07-02 10:49 ` [PATCH v2 3/4] mm: split folio_pte_batch() into folio_pte_batch() and folio_pte_batch_flags() David Hildenbrand
2025-07-02 14:25 ` Zi Yan
2025-07-03 10:45 ` Dev Jain
2025-07-02 10:49 ` [PATCH v2 4/4] mm: remove boolean output parameters from folio_pte_batch_ext() David Hildenbrand
2025-07-02 14:00 ` Oscar Salvador
2025-07-02 14:40 ` David Hildenbrand
2025-07-02 17:53 ` Oscar Salvador
2025-07-03 9:16 ` Oscar Salvador
2025-07-03 12:56 ` Dev Jain
2025-08-04 8:22 ` Wei Yang
2025-08-04 8:23 ` David Hildenbrand
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