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Riku Voipio
Works at Linaro
Lives in Kirkkonummi
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Riku Voipio

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Fastest way to change running dtb
Tollef posted about using BeagleBone Black for temperature monitoring . There was a passage about patching the DTB (device tree) file: ... This needs to be compiled into a .dtb. I found the easiest way was just to drop the patched .dts into an unpacked kern...
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NVMe looks like step into right direction. However, looking at the linux nvme driver, it seems NVMe exposes a just dumb block device. The blocks are of course stored to an undocumented filesystem implemented by proprietary firmware.

Of course the vendors prefer this way. Dumb interface lets vendors add value" on top of the bulk NAND flash by creating a slightly better write distribution algorithm than competitors - never mind the bugs in corner cases outside NTFS usecases...
 
This is the first time I see NVMe in a consumer product, hopefully it will replace AHCI based SSDs in all new products soon.

+Arnd Bergmann 
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Serial port IIRC
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Full room listening to +David Greaves talking​ about installing #sailfishos on android devices. #FOSDEM15
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Just in time for christmas
 
F21 final for AArch64 is out!
Announcing Fedora 21 for AArch64! Paul Whalen pwhalen at redhat.com. Wed Dec 17 21:47:06 UTC 2014. Previous message: Fedora 21 for Power Now Available; Next message: Fedora 21 for IBM System z release; Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ...
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Riku Voipio

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Initial builds of CentOS7 for AArch64 will be available early next week. This is exciting news. #ARMServers
The journey for rebuilding the latest release of CentOS Linux 7 on AArch64 hardware has certainly been an interesting one. After a few bug reports, a couple minor patches, and several iterations through the build system, we finally have a release for community testing and consumption, ...
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A different kind of driving game - also check their homepage :) http://www.johannesrojola.com/msc/index.html
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One for +Matt Hart to try?
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100 years ago, tractors emulating horses, today SSD emulating hard drives. 
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+Manne Teh Jonne Jos pahvi on puristettu MDF.si ... on se kovempaa kuin se mitä se matkii ! :)))
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Riku, I was stuck in the Wikimedia stand during basically the whole FOSDEM. And I could even say properly Hi! when you came. Anyway, next time. I'm very happy to see that you keep working on the cutting edge.
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Protip; On Aarch64 system, If running 32-bit arm programs work as root, but crash with "killed" or "segmentation fault" when running them with non-root users, check value of /proc/sys/vm/mmap_min_addr  (should be 32768 or less it seems).

Kernel sets it to a sensible value by default, but userspace might override it in the name of security.
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awesome tip!
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Adrian M Negreanu's profile photoRiku Voipio's profile photoMaksim Lin's profile photoNanik T's profile photo
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+Adrian M Negreanu possible, I haven't really thought about it since I still need to explain things myself anyways :)
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Have him in circles
493 people
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