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From: "Henry Bausley" <hbausley@deltatau.com>
To: <linuxppc-dev@lists.ozlabs.org>
Subject: Critical Interrupt Input
Date: Thu, 15 Aug 2013 21:57:01 -0700	[thread overview]
Message-ID: <4724f96e$5f998126$5fb2b995$@deltatau.com> (raw)

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Is there any reason that a Critical Input Interrupt will not work reliably 
on a 44x powerpc?

I am using an AMCC now Applied Micro AMCC460EX 

and changed

CRITICAL_EXCEPTION(0x0100, CriticalInput, unknown_exception)
to
CRITICAL_EXCEPTION(0x0100, CriticalInput, do_MyCritIntr)

The code for the handler is trivial
ie.
int crintrcount;

void do_MyCritIntr(void)
{
  crintrcount++;
}

The code runs for a while but eventually I get panic messages and  the 
system hangs.  Is there something I must alter in the kernel to do this 
reliably?



Outbound scan for Spam or Virus by Barracuda at Delta Tau


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             reply	other threads:[~2013-08-16  5:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-16  4:57 Henry Bausley [this message]
2013-08-16 11:04 ` Critical Interrupt Input Kumar Gala
2013-08-17 22:05   ` Benjamin Herrenschmidt
  -- strict thread matches above, loose matches on Subject: below --
2013-08-19 19:00 Henry Bausley
2013-08-19 20:56 ` Benjamin Herrenschmidt
2013-08-19 21:04   ` Denis Kirjanov
2013-08-20 22:48   ` Henry Bausley
2013-08-20 23:08     ` Benjamin Herrenschmidt
2013-08-27 22:11       ` Henry Bausley
2013-08-27 22:14         ` Benjamin Herrenschmidt

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