From: "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
To: Zi Yan <ziy@nvidia.com>
Cc: "David Hildenbrand (Arm)" <david@kernel.org>,
akpm@linux-foundation.org, liam@infradead.org,
vbabka@kernel.org, jannh@google.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org,
Pedro Falcato <pfalcato@suse.de>
Subject: Re: [PATCH] mm/madvise: keep the hardware dirty bit in MADV_COLD's THP path
Date: Mon, 12 Oct 2026 16:26:31 +0100 [thread overview]
Message-ID: <asz7YUXhdmlenXvh@gremlin> (raw)
In-Reply-To: <D964ECBC-59B6-4A4B-83D5-935EA2D06D30@nvidia.com>
+cc Pedro
On Mon, Oct 12, 2026 at 11:17:57AM -0400, Zi Yan wrote:
> On 12 Oct 2026, at 6:38, Lorenzo Stoakes (ARM) wrote:
> > [0]: https://lore.kernel.org/linux-mm/20261009-lazyfree-stable-fix-v1-1-70997958ef8d@nvidia.com
>
> No. Without lazyfree PMD level THP discard, the affect PMD will be split
> into PTEs without dirty bit and the dirty folio is still discarded.
OK thanks for clarifying!
>
> We will need Samarth’s fix for backport, then we can think carefully
> about David’s per-arch solution for mainline.
It's AI slop, and we don't accept that in mm (also -cc slopper).
Somebody from the core team will take of this fix separately.
Pedro - you mentioned you were interested in this, will you send a patch?
--
Cheers, Lorenzo
next prev parent reply other threads:[~2026-10-12 15:26 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-11 13:22 samarth.colleges
2026-10-12 10:00 ` Lorenzo Stoakes (ARM)
2026-10-12 10:09 ` David Hildenbrand (Arm)
2026-10-12 10:33 ` Lorenzo Stoakes (ARM)
2026-10-12 10:38 ` Lorenzo Stoakes (ARM)
2026-10-12 15:17 ` Zi Yan
2026-10-12 15:26 ` Lorenzo Stoakes (ARM) [this message]
2026-10-12 19:02 ` Pedro Falcato
[not found] ` <CAAbz3fTZyeDL1Sy5FOxuJ8e0zgM5SJa1UKa7sk2apkaJFeeBaA@mail.gmail.com>
2026-10-12 20:00 ` Lorenzo Stoakes (ARM)
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=asz7YUXhdmlenXvh@gremlin \
--to=ljs@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=david@kernel.org \
--cc=jannh@google.com \
--cc=liam@infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=pfalcato@suse.de \
--cc=stable@vger.kernel.org \
--cc=vbabka@kernel.org \
--cc=ziy@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®