diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2023-07-05 16:51:43 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-08-02 22:49:46 +1000 |
| commit | d1099e2276df1d8dd4037552c2f34eb4c4df4a75 (patch) | |
| tree | 10e415a99813b3eb3504a9afcb99a8aa3c489fd8 /arch/powerpc/platforms/pseries | |
| parent | 73c58e7e14126466701705820c4eb47daddc357d (diff) | |
powerpc/pseries: Honour current SMT state when DLPAR onlining CPUs
Integrate with the generic SMT support, so that when a CPU is DLPAR
onlined it is brought up with the correct SMT mode.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230705145143.40545-11-ldufour@linux.ibm.com
Diffstat (limited to 'arch/powerpc/platforms/pseries')
| -rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-cpu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index 61fb7cb00880..e62835a12d73 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -398,6 +398,14 @@ static int dlpar_online_cpu(struct device_node *dn) for_each_present_cpu(cpu) { if (get_hard_smp_processor_id(cpu) != thread) continue; + + if (!topology_is_primary_thread(cpu)) { + if (cpu_smt_control != CPU_SMT_ENABLED) + break; + if (!topology_smt_thread_allowed(cpu)) + break; + } + cpu_maps_update_done(); find_and_update_cpu_nid(cpu); rc = device_online(get_cpu_device(cpu)); |