From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Aditya Sharma <adi.sharma@zohomail.in>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Lorenzo Stoakes <ljs@kernel.org>,
"Liam R . Howlett" <liam@infradead.org>,
Vlastimil Babka <vbabka@kernel.org>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
David Rientjes <rientjes@google.com>,
Shakeel Butt <shakeel.butt@linux.dev>,
Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Kees Cook <kees@kernel.org>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Valentin Schneider <vschneid@redhat.com>,
K Prateek Nayak <kprateek.nayak@amd.com>,
linux-mm <linux-mm@kvack.org>,
linux-doc <linux-doc@vger.kernel.org>,
linux-trace-kernel <linux-trace-kernel@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
imbrenda <imbrenda@linux.ibm.com>
Subject: Re: [RFC PATCH 0/7] mm: defer address-space teardown of large exiting processes to a kthread
Date: Tue, 21 Jul 2026 12:19:57 +0200 [thread overview]
Message-ID: <d6c3eba3-c596-4903-b298-ac6f424d639c@kernel.org> (raw)
In-Reply-To: <19f80cb1ed8.13fd666243425.2308143427066829733@zohomail.in>
[...]
> says that the s390 case was addressed with KVM specific async destruction,
> but what you point to is QEMU's shadow process. I will correct that in v2.
CLONE_VM seems to work for the use cases you had in mind.
There would have to be a *pretty* convincing story why we would want more
complexity in the kernel to handle this.
Some smaller performance improvements are not worth it.
--
Cheers,
David
next prev parent reply other threads:[~2026-07-21 10:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-19 18:54 [RFC PATCH 0/7] mm: defer address-space teardown of large exiting processes to a kthread Aditya Sharma
2026-07-19 18:54 ` [RFC PATCH 1/7] mm: add CONFIG_ASYNC_MM_TEARDOWN scaffolding for off-CPU exit teardown Aditya Sharma
2026-07-19 18:54 ` [RFC PATCH 2/7] mm: dispatch __mmput() to an mm_reaper kthread via llist Aditya Sharma
2026-07-19 18:54 ` [RFC PATCH 3/7] mm/oom_kill: mark an OOM victim's mm with MMF_OOM_TARGETED Aditya Sharma
2026-07-19 18:54 ` [RFC PATCH 4/7] mm: gate async teardown on RSS with pending-pages backpressure Aditya Sharma
2026-07-19 18:54 ` [RFC PATCH 5/7] mm: add runtime toggle and sysctls for async teardown Aditya Sharma
2026-07-19 18:54 ` [RFC PATCH 6/7] mm: add tracepoints and vmstat counters " Aditya Sharma
2026-07-21 21:17 ` Steven Rostedt
2026-07-23 18:22 ` Aditya Sharma
2026-07-19 18:54 ` [RFC PATCH 7/7] exit: route exit_mm()'s final mmput() through mmput_exit() Aditya Sharma
2026-07-19 22:28 ` [RFC PATCH 0/7] mm: defer address-space teardown of large exiting processes to a kthread Liam R . Howlett
2026-07-20 18:38 ` Aditya Sharma
2026-07-20 8:13 ` David Hildenbrand (Arm)
2026-07-20 18:30 ` Aditya Sharma
2026-07-21 10:19 ` David Hildenbrand (Arm) [this message]
2026-07-23 18:20 ` Aditya Sharma
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