Hi list,

I recently tested the hwrng driver. In principal, it works, but it
sometimes eats up all host CPU time. In particular, I can see that the
UML system does a (blocking) read on /dev/hwrng, and that the host
system loops while reading from /dev/random which almost always returns
-EAGAIN. (Found that out with strace, in the hope the output is
correct.)

Nevertheless rngd seems to work, because when killing with SIGUSR1 it
shows some reasonable statistics.

My test setup is as follows:

- Host system: 2.6.12.6 with SKAS3 v8.2 patch
- UML system: 2.6.14-rc5, in SKAS3 mode.
  Using rngd from Debian Sarge.
  TLS is disabled.

Let me know if you need more information.

Gerd
-- 
------------------------------------------------------------
Gerd Stolpmann * Viktoriastr. 45 * 64293 Darmstadt * Germany 
[EMAIL PROTECTED]          http://www.gerd-stolpmann.de
Telefon: 06151/153855                  Telefax: 06151/997714
------------------------------------------------------------



-------------------------------------------------------
This SF.Net email is sponsored by:
Power Architecture Resource Center: Free content, downloads, discussions,
and more. http://solutions.newsforge.com/ibmarch.tmpl
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

Reply via email to