From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Matthew Wilcox <willy@infradead.org>, Kiryl Shutsemau <kas@kernel.org>
Cc: lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org,
x86@kernel.org, linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Mike Rapoport <rppt@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Usama Arif <usama.arif@linux.dev>
Subject: Re: [LSF/MM/BPF TOPIC] 64k (or 16k) base page size on x86
Date: Fri, 1 May 2026 20:05:54 +0200 [thread overview]
Message-ID: <3a599186-6ae5-4175-8de0-1826a045222c@kernel.org> (raw)
In-Reply-To: <afIYFtL6KrBs38rT@casper.infradead.org>
> Fourth, we change the unit of the lookup in the maple tree from being
> a PFN to being address / 512 (or whatever size we want to use as our
> minimum).
>
> Now we can have memdescs for an arbitrary power of two which means we
> can ditch all the awful code from ppc/s390 page table handling where
> they try to share one memdesc between several different page tables.
Having a memdesc describe a smaller piece than a page sounds like the way to
approach this cleanly. A lot of work, but sounds like the right long-term vision
also when it comes to having folios that are smaller than a page.
--
Cheers,
David
next prev parent reply other threads:[~2026-05-01 18:06 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-19 15:08 [LSF/MM/BPF TOPIC] 64k (or 16k) base page size on x86 Kiryl Shutsemau
2026-02-19 15:17 ` Peter Zijlstra
2026-02-19 15:20 ` Peter Zijlstra
2026-02-19 15:27 ` Kiryl Shutsemau
2026-02-19 15:33 ` Pedro Falcato
2026-02-19 15:50 ` Kiryl Shutsemau
2026-02-19 15:53 ` David Hildenbrand (Arm)
2026-02-19 19:31 ` Pedro Falcato
2026-02-19 15:39 ` David Hildenbrand (Arm)
2026-02-19 15:54 ` Kiryl Shutsemau
2026-02-19 16:09 ` David Hildenbrand (Arm)
2026-02-20 2:55 ` Zi Yan
2026-02-19 17:09 ` Kiryl Shutsemau
2026-02-20 10:24 ` David Hildenbrand (Arm)
2026-02-20 12:07 ` Kiryl Shutsemau
2026-02-20 16:30 ` David Hildenbrand (Arm)
2026-02-20 19:33 ` Kalesh Singh
2026-02-23 11:04 ` David Hildenbrand (Arm)
2026-02-23 11:13 ` Kiryl Shutsemau
2026-02-23 11:27 ` David Hildenbrand (Arm)
2026-02-23 12:16 ` Kiryl Shutsemau
2026-02-23 15:14 ` Dave Hansen
2026-02-23 15:31 ` David Hildenbrand (Arm)
2026-02-23 15:45 ` Kiryl Shutsemau
2026-02-23 15:49 ` David Hildenbrand (Arm)
2026-02-23 16:22 ` Lorenzo Stoakes
2026-02-23 16:34 ` David Laight
2026-02-19 23:24 ` Kalesh Singh
2026-02-20 12:10 ` Kiryl Shutsemau
2026-02-20 19:21 ` Kalesh Singh
2026-02-19 17:08 ` Dave Hansen
2026-02-19 22:05 ` Kiryl Shutsemau
2026-02-20 3:28 ` Liam R. Howlett
2026-02-20 12:33 ` Kiryl Shutsemau
2026-02-20 15:17 ` Liam R. Howlett
2026-02-20 15:50 ` Kiryl Shutsemau
2026-02-19 17:30 ` Dave Hansen
2026-02-19 22:14 ` Kiryl Shutsemau
2026-02-19 22:21 ` Dave Hansen
2026-02-19 17:47 ` Matthew Wilcox
2026-02-19 22:26 ` Kiryl Shutsemau
2026-02-20 9:04 ` David Laight
2026-02-20 12:12 ` Kiryl Shutsemau
2026-04-29 14:39 ` Matthew Wilcox
2026-04-29 15:26 ` Kiryl Shutsemau
2026-05-01 18:05 ` David Hildenbrand (Arm) [this message]
2026-05-01 18:00 ` Kiryl Shutsemau
2026-05-01 18:02 ` David Hildenbrand (Arm)
2026-05-01 18:12 ` Kiryl Shutsemau
2026-05-01 18:31 ` David Hildenbrand (Arm)
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