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Comment: Re:Short story: See to what Linus responds (Score 1) 641

by imroy (#46664785) Attached to: Linus Torvalds Suspends Key Linux Developer

Linus made this argument in a different forum yesterday (paraphrasing from memory): "Look, something has to be authoratitive when it comes to parameters. On a linux system, that's the kernel". Which is aribitrary, but not without merit.

No. This is the kernel command line we're talking about, after all. Its original intent is to be used to send options and information to the kernel and, by extension, kernel modules. The fact that user-space programs can read /proc/cmdline and get options passed in from the bootloader (e.g different menu entries) is frankly a hack. The least any user-space programmer should do is make sure their chosen strings don't clash with already-existing parameters. Re-using the "debug" flag is inappropriate, even if it didn't flood dmesg and hang the system.


Linus Torvalds Admits He's Been Asked To Insert Backdoor Into Linux 576

Posted by samzenpus
from the getting-in dept.
darthcamaro writes "At the Linuxcon conference in New Orleans today, Linus Torvalds joined fellow kernel developers in answering a barrage of questions about Linux development. One question he was asked was whether a government agency had ever asked about inserting a back-door into Linux. Torvalds responded 'no' while shaking his head 'yes,' as the audience broke into spontaneous laughter. Torvalds also admitted that while he as a full life outside of Linux he couldn't imagine his life without it. 'I don't see any project coming along being more interesting to me than Linux,' Torvalds said. 'I couldn't imagine filling the void in my life if I didn't have Linux.'"

Comment: Re:No updates in 6 years? (Score 5, Informative) 197

by imroy (#43970235) Attached to: FLAC Gets First Update In 6 Years

It consists of an inherently lossy encoding in the frequency domain (like MP3) plus an encoding of the difference between the lossily encoded audio and the original.

While a few other lossless formats do this (mostly for backward-compatibility), FLAC does not convert the audio into the frequency domain. It either uses a polynomial or linear function:

Comment: Re:try hardkernel stuff instead (Score 2) 142

by imroy (#43524047) Attached to: BeagleBone Black Released With 1GHz Cortex-A8 For Only $45
Those hardkernel boards sure are interesting but lack the GPIO of these boards. I think a better comparison is to the Cubieboard. It also has a 1 GHz Cortex-A8 with lots of GPIO pins, but has 1 GB of RAM, 4 GB of flash and a SATA port. It's also a bit more expensive, but I'm pretty sure TI has been subsidising the Beagle boards.

Comment: Re:ARM is not RISC and x86-64 is not CISC (Score 4, Interesting) 403

by imroy (#41353579) Attached to: The Linux-Proof Processor That Nobody Wants
The ARM ISA may seem "complex" when you describe it like you have, but each instruction is still a fixed size, they all follow one of only a limited number of formats (R-type, etc), and memory is only accessed by load/store instructions. That's why many prefer the term "load/store architecture". Anyway, these things really help to simplify your instruction decoder stage and keep memory accesses simple. These in turn make it easier to implement things like pipelines, out-of-order execution, branch prediction, etc. And that's only the stuff that has been implemented in ARM so far. I wonder how long until ARM develops a core with more advanced features, like register renaming and specularitive execution, and how it will perform then compared to x86 (which already has these things).

Center meeting at 4pm in 2C-543.