96a985c51d
where running ofwdump could cause hangs by forcing all secondary CPUs into a busy wait with interrupts off during the call. Following section 8.4 of the Open Firmware PowerPC processor binding, the firmware is free to overwrite the system interrupt handlers during OF calls, restoring the OS handlers on exit. On single CPU systems, this process is invisible to the operating system. On multiple CPU systems, taking any exception on a secondary CPU while an OF call is in progress ends with that exception vectored into OF, resulting in a slow movement of the entire system into firmware context and a machine hang. MFC after: 3 days |
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| .. | ||
| aim | ||
| booke | ||
| compile | ||
| conf | ||
| cpufreq | ||
| fpu | ||
| include | ||
| mpc85xx | ||
| ofw | ||
| powermac | ||
| powerpc | ||
| psim | ||