From: Richard Weinberger <richard@nod.at>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave@sr71.net>, ksummit <ksummit@lists.linux.dev>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
linux-mips <linux-mips@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>, imx <imx@lists.linux.dev>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
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>,
vbabka <vbabka@suse.cz>, Suren Baghdasaryan <surenb@google.com>,
Ira Weiny <ira.weiny@intel.com>, Nishanth Menon <nm@ti.com>,
heiko <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: Mon, 6 Oct 2025 22:15:21 +0200 (CEST) [thread overview]
Message-ID: <1190290449.3827.1759781721487.JavaMail.zimbra@nod.at> (raw)
In-Reply-To: <4fcd272f-81e3-4729-922b-588ad144e39b@app.fastmail.com>
----- Ursprüngliche Mail -----
> Von: "Arnd Bergmann" <arnd@arndb.de>
>>> Has anybody run into actual end user visible problems when using one of
>>> weirdo PAGE_OFFSET configs?
>>
>> In the past I saw that programs such as the Java Runtime (JRE) ran into
>> address space limitations due to a 2G/2G split on embedded systems.
>> Reverting to a 3G/1G split fixed the problems.
>
> Right, that makes sense, given the tricks they likely play on the
> virtual address space. Are the 2GB devices you maintain using a JRE,
> or was this on other embedded hardware? How common is Java still in
> this type of workload?
Sorry for the late reply, I was on vacation.
No, the devices with the JRE issues are from a different customer.
Since I work as a consultant lots of strange issues get thrown my way
I wouldn't say Java is super common but I still see it from time to time.
Thanks,
//richard
next prev parent reply other threads:[~2025-10-06 20:22 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 [this message]
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
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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