Commit 59a53afe authored by Michael Neuling's avatar Michael Neuling Committed by Benjamin Herrenschmidt
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powerpc: Don't setup CPUs with bad status



OPAL will mark a CPU that is guarded as "bad" in the status property of the CPU
node.

Unfortunatley Linux doesn't check this property and will put the bad CPU in the
present map.  This has caused hangs on booting when we try to unsplit the core.

This patch checks the CPU is avaliable via this status property before putting
it in the present map.
Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
Tested-by: default avatarAnton Blanchard <anton@samba.org>
cc: stable@vger.kernel.org
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 96d01610
...@@ -471,7 +471,7 @@ void __init smp_setup_cpu_maps(void) ...@@ -471,7 +471,7 @@ void __init smp_setup_cpu_maps(void)
for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) { for (j = 0; j < nthreads && cpu < nr_cpu_ids; j++) {
DBG(" thread %d -> cpu %d (hard id %d)\n", DBG(" thread %d -> cpu %d (hard id %d)\n",
j, cpu, be32_to_cpu(intserv[j])); j, cpu, be32_to_cpu(intserv[j]));
set_cpu_present(cpu, true); set_cpu_present(cpu, of_device_is_available(dn));
set_hard_smp_processor_id(cpu, be32_to_cpu(intserv[j])); set_hard_smp_processor_id(cpu, be32_to_cpu(intserv[j]));
set_cpu_possible(cpu, true); set_cpu_possible(cpu, true);
cpu++; cpu++;
......
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