We're running with the 3.4 kernel with RT patch, and we're trying to
debug some issues.
One of the issues is that the magic sysrq "l" command to show a stack
backtrace on all CPUs doesn't seem to work, though other magic sysrq
commands do work properly.
Looking at the code, for X86 it seems to call
apic->send_IPI_all(NMI_VECTOR);
Does anyone know what kernel thread would handle NMI_VECTOR? I want to
make sure its priority is sufficiently high.
Thanks,
Chris
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