#nixos-aarch64 on 2019-08-21

2018-09-23 16:56 gchristensen changed the topic of #nixos-aarch64 to: Get access to the NixOS Community aarch64 build box: https://github.com/nix-community/aarch64-build-box ... todo: https://hydra.nixos.org/jobset/nixpkgs/trunk#tabs-jobs build box status: https://monitoring.nix.ci/d/hkRCcV0mk/instance-metrics?var-instance=aarch64.nixos.community&orgId=1

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11:41 <jophish> Hi all

11:42 <gchristensen> btw jophish if there is a good qemu-ey way to do this, I would be interested in making it part of the offering officially

11:42 <jophish> I'd like to use the aarch64 machine for some armv7 builds. Up until now I've been patching uname to return the correct machine type, but it sounds as though qemu might be a better way to go about this

11:43 <jophish> Does anyone have a qemu one-liner to do this?

11:43 <jophish> gchristensen: I'll let you know if I figure it out!

11:53 <jophish> gchristensen: I've booted debian on the arm64 server

11:53 <jophish> using these files https://people.debian.org/~aurel32/qemu/armhf/

11:54 <jophish> qemu-system-aarch64 -enable-kvm -cpu host,aarch64=off -machine vexpress-a9 -nographic -serial mon:stdio -kernel vmlinuz-3.2.0-4-vexpress -initrd initrd.img-3.2.0-4-vexpress -drive file=debian_wheezy_armhf_standard.qcow2 -append "root=/dev/mmcblk0p2 console=ttyAMA0"

11:54 <jophish> That's the invocation, but the storage path isn't correct,

11:54 <jophish> I"ve got to head off now, will have a further look when I return

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12:15 <thefloweringash> I made some extremely rough notes when I was trying this: https://gist.github.com/thefloweringash/b96ea17f28882cbe558aa8d6e0df11c4

12:16 <thefloweringash> I did manage to build an sdImage and some packages

12:16 <thefloweringash> I was going to try again when I got some fancier hardware

12:17 <thefloweringash> even though I asked for 32 cores and 120gb of ram, the vm only seemed to see 3gb of ram (expected) and 16 cores (less expected)

12:18 <gchristensen> lol

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14:15 <jophish> Thanks, thefloweringash

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15:46 <samueldr> thefloweringash: the kernel needs LPAE

15:46 <samueldr> for more than 3GB of ram

15:47 <samueldr> I think it should be safe to enable for all armv7l targets, but haven't been able to confirm it yet

15:48 <samueldr> as for cores, I'm not sure where the limitation lies :/

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