From: Andrew Lunn <andrew@lunn.ch>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "Jason Gunthorpe" <jgg@nvidia.com>,
ksummit@lists.linux.dev, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org,
linux-mm@kvack.org, imx@lists.linux.dev,
"Christophe Leroy" <christophe.leroy@csgroup.eu>,
"Richard Weinberger" <richard@nod.at>,
"Lucas Stach" <l.stach@pengutronix.de>,
"Linus Walleij" <linus.walleij@linaro.org>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Ankur Arora" <ankur.a.arora@oracle.com>,
"David Hildenbrand" <david@redhat.com>,
"Mike Rapoport" <rppt@kernel.org>,
"Lorenzo Stoakes" <lorenzo.stoakes@oracle.com>,
"Matthew Wilcox" <willy@infradead.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
"Vlastimil Babka" <vbabka@suse.cz>,
"Suren Baghdasaryan" <surenb@google.com>,
"Ira Weiny" <ira.weiny@intel.com>, "Nishanth Menon" <nm@ti.com>,
"Heiko Stübner" <heiko@sntech.de>,
"Alexander Sverdlin" <alexander.sverdlin@gmail.com>,
"Chester A. Unal" <chester.a.unal@arinc9.com>,
"Sergio Paracuellos" <sergio.paracuellos@gmail.com>,
"Andreas Larsson" <andreas@gaisler.com>
Subject: Re: [TECH TOPIC] Reaching consensus on CONFIG_HIGHMEM phaseout
Date: Thu, 18 Sep 2025 15:34:29 +0200 [thread overview]
Message-ID: <ca6fc8dc-d1ee-41a8-a1c9-11ed2907207f@lunn.ch> (raw)
In-Reply-To: <02b0f383-1c43-4eeb-a76f-830c2970b833@app.fastmail.com>
> * Marvell mv78xx0 and kirkwood (armv5 pj1) were fairly
> powerful in 2008 and could support at least 1GB of RAM,
> but I only found one machine (OpenBlocks A7) that does
> this. It's unclear if anyone is still updating kernels
> on this machine, but they could /probably/ use
> VMSPLIT_3G_OPT if they do.
If i remember correctly, there was a design issue with the OpenBlocks
A7, and it would not run with its full amount of memory. To get a
stable system you had to limit the RAM. I don't remember if that was
just with the NULL series, and it was fixed for mass production
devices, or they are all broken.
I doubt there are any mv78xx0 machines left, why where never very
popular, but there are still Kirkwood NAS boxes around. I keep mine up
to date, put an LTS kernel on it once a year, update to the latest
debian sid.
Andrew
next prev parent reply other threads:[~2025-09-18 13:34 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-09 21:23 [TECH TOPIC] Reaching consensus on CONFIG_HIGHMEM phaseout Arnd Bergmann
2025-09-09 21:38 ` H. Peter Anvin
2025-09-09 22:24 ` Linus Torvalds
2025-09-09 22:39 ` H. Peter Anvin
2025-09-10 1:06 ` René Herman
2025-09-10 1:46 ` Matthew Wilcox
2025-09-10 9:49 ` Linus Walleij
2025-09-10 12:17 ` Arnd Bergmann
2025-09-10 12:32 ` David Hildenbrand
2025-09-10 13:10 ` Linus Walleij
2025-09-10 14:04 ` Matthew Wilcox
2025-09-10 15:13 ` Arnd Bergmann
2025-09-10 14:04 ` Richard Weinberger
2025-09-10 16:34 ` Dave Hansen
2025-09-10 20:33 ` Richard Weinberger
2025-09-10 21:56 ` René Herman
2025-09-12 10:30 ` Arnd Bergmann
2025-09-12 12:46 ` Linus Walleij
2025-10-06 20:15 ` Richard Weinberger
2025-09-10 17:11 ` Christophe Leroy
2025-09-10 19:37 ` Richard Weinberger
2025-09-11 5:38 ` Andreas Larsson
2025-09-11 7:53 ` Arnd Bergmann
2025-09-12 9:32 ` Andreas Larsson
2025-09-12 9:36 ` H. Peter Anvin
2025-09-12 10:17 ` Arnd Bergmann
2025-09-12 9:58 ` H. Peter Anvin
2025-09-12 13:16 ` Matthew Wilcox
2025-09-12 16:49 ` Nicolas Ferre
2025-09-12 21:09 ` Arnd Bergmann
2025-09-17 12:59 ` Jason Gunthorpe
2025-09-18 13:12 ` Arnd Bergmann
2025-09-18 13:34 ` Andrew Lunn [this message]
2025-09-18 16:18 ` Arnd Bergmann
2025-09-18 16:32 ` Andrew Lunn
2025-09-19 7:17 ` Geert Uytterhoeven
2025-09-19 14:22 ` Arnd Bergmann
2025-09-19 14:34 ` Jason Gunthorpe
2025-09-22 6:58 ` Arnd Bergmann
2025-09-22 17:05 ` Nicolas Schichan
2025-09-22 21:22 ` Arnd Bergmann
2025-09-19 14:41 ` Nicolas Ferre
2025-09-19 14:22 ` Nicolas Ferre
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