[uml-devel] hack: avoid "Registered protocol family 2" hang

[uml-devel] hack: avoid "Registered protocol family 2" hang

[Werner Almesberger]

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I've attached a little hack that should make the hang after
NET: Registered protocol family 2
disappear. This isn't the real solution (haven't yet figured
out how this is truly supposed to work on non-SMP), but it 
gives me a happier UML :-)

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina     werner@almesberger.net /
/_http://www.almesberger.net/____________________________________________/

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--- linux-2.6.1-orig/arch/um/kernel/time_kern.c	2004-03-05 13:37:14.638203216 +0100
+++ linux-2.6.1/arch/um/kernel/time_kern.c	2004-03-05 13:14:03.159740096 +0100
@@ -172,6 +172,7 @@
 	update_process_times(user_context(UPT_SP(regs)));
 	local_irq_enable();
 #endif
+	update_process_times(user_context(UPT_SP(regs)));
 	if(current_thread->cpu == 0)
 		timer_irq(regs);
 }

[uml-devel] Re: [uml-user] hack: avoid "Registered protocol family 2" hang

[Jonathan Boler]

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Werner Almesberger wrote:
> I've attached a little hack that should make the hang after
> NET: Registered protocol family 2
> disappear. This isn't the real solution (haven't yet figured
> out how this is truly supposed to work on non-SMP), but it 
> gives me a happier UML :-)
> 
> - Werner
> 

The actual bug has been fixed. The problem was the host cpu Hz was being 
truncated to a signed int so uml wouldn't run on a host faster than 2.1Ghz.

Patch attached

Jonathan

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--- arch/um/kernel/time.c       2004-03-05 13:54:12.262248632 +0000
+++ ../../linux-2.6.3/arch/um/kernel/time.c     2004-03-04 08:54:33.000000000 +0000
@@ -88,7 +88,8 @@
 static unsigned long long get_host_hz(void)
 {
        char mhzline[16], *end;
-       int ret, mult, mhz, rest, len;
+       int ret, mult, rest, len;
+       unsigned long long mhz;
 
        ret = cpu_feature("cpu MHz", mhzline, 
                          sizeof(mhzline) / sizeof(mhzline[0]));

[uml-devel] Re: [uml-user] hack: avoid "Registered protocol family 2" hang

[Werner Almesberger]

Jonathan Boler wrote:
> Patch attached

Thanks a lot ! I've been following the list through the archive, but
that seems to be very out of sync now :-(

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina     werner@almesberger.net /
/_http://www.almesberger.net/____________________________________________/


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