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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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Why does Linux run so well on ARM (ls.buckodr.ink)

submitted 1 year ago by xusontha@ls.buckodr.ink to c/linux@lemmy.ml

83 comments fedilink hide all child comments

I've seen people talking about it and experienced it myself with a server, but why does Linux run so well on ARM (especially compared to Windows)?

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[–] skullgiver@popplesburger.hilciferous.nl 8 points 1 year ago* (last edited 1 year ago) (1 children)

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[–] BCsven@lemmy.ca 3 points 1 year ago (1 children)

The issue with Arm is they aren't all one board/chip, you have ARM based design licenced from them and they are built to meet the criteria of what the customer requires. i.e. for my iomega NAS there isn't firmware boot, you just have to generate an empty section of 00s on the first 32bytes of the drive so the board knows that is the drive to load the kernel from (no grub no uboot) and the board is set to do the rest from the next partition.

[–] skullgiver@popplesburger.hilciferous.nl 3 points 1 year ago* (last edited 1 year ago) (2 children)

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[–] Bene7rddso@feddit.de 2 points 1 year ago

Booting isn't the only problem with ARM. Instead of saving information about builtin devices on the board and exposing it via ACPI, board manufacturers create a devicetree and ship it with the kernel. This means that if you want to run your own kernel you need to build your own devicetree

[–] BCsven@lemmy.ca 2 points 1 year ago (1 children)

But all x86 instructions are the same right, thus why it doesnt matter what era your chip is from or what manufacturer, arm can be very different

[–] skullgiver@popplesburger.hilciferous.nl 2 points 1 year ago* (last edited 1 year ago) (1 children)

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[–] BCsven@lemmy.ca 2 points 1 year ago

Thanks for the info, I appreciate the reply