iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/pseries: Honour current SMT state when DLPAR onlining CPUs

Browse Source 
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
This commit is contained in:
Michael Ellerman 2023-07-05 16:51:43 +02:00
parent 73c58e7e14
commit d1099e2276
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/powerpc/platforms/pseries/hotplug-cpu.c
View File

@ -398,6 +398,14 @@ static int dlpar_online_cpu(struct device_node *dn)
for_each_present_cpu(cpu) { for_each_present_cpu(cpu) {
if (get_hard_smp_processor_id(cpu) != thread) if (get_hard_smp_processor_id(cpu) != thread)
continue; 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(); cpu_maps_update_done();
find_and_update_cpu_nid(cpu); find_and_update_cpu_nid(cpu);
rc = device_online(get_cpu_device(cpu)); rc = device_online(get_cpu_device(cpu));