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Unal" , Sergio Paracuellos , Andreas Larsson Message-ID: <640041197.22387.1757536385810.JavaMail.zimbra@nod.at> In-Reply-To: References: <4ff89b72-03ff-4447-9d21-dd6a5fe1550f@app.fastmail.com> <497308537.21756.1757513073548.JavaMail.zimbra@nod.at> Subject: Re: [TECH TOPIC] Reaching consensus on CONFIG_HIGHMEM phaseout MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [195.201.40.130] X-Mailer: Zimbra 8.8.12_GA_3807 (ZimbraWebClient - FF141 (Linux)/8.8.12_GA_3809) Thread-Topic: Reaching consensus on CONFIG_HIGHMEM phaseout Thread-Index: qX92QwLBi0un/69XQpQP6tb4aScRlQ== X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: CCCD6A000D X-Stat-Signature: bqoojkw43rfci4gz4m7bb7ffndzikmzw X-Rspam-User: X-HE-Tag: 1757536388-693694 X-HE-Meta: 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 nhDGSgJc RESF70KFrULKa455ftCjQouBAFkXuWe9G63fUEXFcr9kdg7T+oWZK/1ngN28ZZx3/2YmQsZSI5Lw7CxiTGz0Qc61aF55BtlCL2s6TncA+gNxaP4DIge23XBvhN2Xe7Ubs3wNnin/de5i5f/UO8nmOyUKC79Ymx/49m+87kaUFOH5BOMk5yRUzUxTtH5OYzPbSWsYZU94vu1a2proBmE4kAubabMvjoitcpQ5vKMFe0ywvorCLN6+1AW0ZJAnFXYKPqRIP4vlLwBajC3EIxxaZckMSySJ72YApBli3YIQGP+oI1Oo7znBD4H5P0uU+ljsSJhhwlBdyvtG/0+sw7lgDDYDeI7fry2u4IYIapcCs2w/RvIEt2Bv5olz75cNFCuCSz4zER5z1ls/p0uPC/hXpQPFfqw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Dave, ----- Urspr=C3=BCngliche Mail ----- > Von: "Dave Hansen" >> Even with a new memory split, which could utilize most of the >> available memory, I expect there to be issues with various >> applications and FPGA device drivers. > I'd be really curious what the _actual_ issues would be with a > non-standard split. There are a lot of "maybe" problems and solutions > here, but it's hard to move forward without known practical problems to > tackle. >=20 > 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. Thanks, //richard