diff options
Diffstat (limited to 'drivers/misc/cxl/fault.c')
| -rw-r--r-- | drivers/misc/cxl/fault.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index 6eed7d03e2b5..ab507e4ed69b 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -138,6 +138,12 @@ int cxl_handle_mm_fault(struct mm_struct *mm, u64 dsisr, u64 dar) int result; unsigned long access, flags, inv_flags = 0; + /* + * Add the fault handling cpu to task mm cpumask so that we + * can do a safe lockless page table walk when inserting the + * hash page table entry. + */ + cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm)); if ((result = copro_handle_mm_fault(mm, dar, dsisr, &flt))) { pr_devel("copro_handle_mm_fault failed: %#x\n", result); return result; |