[Xenomai-core] PRNG not seeded on AMD K7

[Jeroen Van den Keybus]

When I try to open an ssh connection to or from a PC running Xenomai, I get a'PRNG not seeded' error. However, it only occurs when an RT application is running (such as 'latency'). The computer on which this occurs is an AMD K7-650. I've tested on a Pentium III 500 as well (nearly same .config) and this error doesn't show up then.


Any idea of where I should start debugging ? I assume that PRNG stands for'Programmable Random Number Generator' or something like that.

Jeroen.

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Re: [Xenomai-core] PRNG not seeded on AMD K7

[Gilles Chanteperdrix]

Jeroen Van den Keybus wrote:
  When I try to open an ssh connection to or from a PC running Xenomai, I get
  a 'PRNG not seeded' error. However, it only occurs when an RT application is
  running (such as 'latency'). The computer on which this occurs is an AMD
  K7-650. I've tested on a Pentium III 500 as well (nearly same .config) and
  this error doesn't show up then.
  
  Any idea of where I should start debugging ? I assume that PRNG stands
  for 'Programmable Random Number Generator' or something like that.

See in kernel configuration if you have the CONFIG_HW_RANDOM option
enabled, if the module is loaded when the error occurs, and if
/dev/urandom exists.

-- 


Gilles Chanteperdrix.

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[Xenomai-core] Xenomai v2.1

[Philippe Gerum]

As Alan B. Shepard once put it, It's been a long way, but we're here. v2.1 final 
is now on GNA's download area, with only few changes since -rc4. This milestone is 
important in that most - if not all - of the annoying legacy inherited from the 
RTAI/fusion times has been resolutely reworked more sanely. Here are the major 
evolutions you will find in this release, in no particular order:


- Complete integration of Xenomai's kernel components into the Linux kernel build 
system, which among other things, enables static builds of Xenomai within a kernel 
image, while keeping the modular builds available on option.
- Complete decoupling between Xenomai's kernel and user-space components, which in 
turn largely improves friendliness toward other languages than C for application 
developers, and makes an ABI slowly emerge.

- Improved scalability for supporting resource consuming applications.
- Fully compatible backports to Linux 2.4 for x86 and ppc32.
- Two new architecture ports, to ARM and Blackfin.
- Significant extension of the POSIX API accessible from user-space (shm, named 
semaphores, cancellation requests, real-time signals).

- Shared real-time interrupt support.
- Improvement of the Native API.
- Extension of the RTDM support.
- Upgrade of the Adeos support to the latest I-pipe series for all 
architectures.

And generally speaking, literally tons of fixes, cleanups, optimizations all over 
the map.


Special thanks to the increasing number of people who contributed code, ideas, 
review, documentation, help to newcomers.


http://download.gna.org/xenomai/stable/xenomai-2.1.tar.bz2

--

Philippe.

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