[Xen-ia64-devel] context switch bug ?

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Hi,

while working on SMP, I think I hit a problem which may require a local 
redesign in context switching.

In common/schedule.c(__enter_scheduler), the last lines are:

    context_switch(prev, next);

    spin_unlock_irq(&schedule_data[cpu].schedule_lock);

    context_switch_finalise(next);
}

Unfortunatly, on ia64, context_switch does all the work and 
context_switch_finalise does nothing.  Therefore, the cpu-spin lock is
still taken when the domain runs [even with one cpu].
It is correct ?

I will try to fix this issue tomorrow, and I will look on x86 code.  However, 
if anymore has already think about this issue, please share!

Thanks.

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