diff options
| author | Gou Hao <gouhao@uniontech.com> | 2026-07-27 18:42:14 +0800 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2026-08-03 13:56:00 +0530 |
| commit | 37d401c9c4b89c3c193726e177493ef06c657f40 (patch) | |
| tree | acb74261983ef8d318378fc302c1e4b86d907679 /tools/perf/scripts/python/parallel-perf.py | |
| parent | 411a3c016e7a95f5fa105a0587e07d0647a77727 (diff) | |
powerpc/xive: defer setting cause_ipi until IPI init succeeds
xive_smp_probe() currently assigns smp_ops->cause_ipi = xive_cause_ipi
before calling xive_init_ipis() and xive_setup_cpu_ipi(). If either
call fails, the platform probe handler returns early but cause_ipi
remains pointing to xive_cause_ipi -- which accesses per-cpu IPI data
(xc->ipi_data) that was never properly initialized, leading to
a WARN and a crash.
Move the cause_ipi assignment to after both calls succeed, so that
smp_ops->cause_ipi is only set when the IPI subsystem is fully
initialized.
Signed-off-by: Gou Hao <gouhao@uniontech.com>
Suggested-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: jiazhenyuan <jiazhenyuan@uniontech.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260727104215.184786-5-gouhao@uniontech.com
Diffstat (limited to 'tools/perf/scripts/python/parallel-perf.py')
0 files changed, 0 insertions, 0 deletions