On Sat, 21 Jan 2023 19:53:52 +1000, Nicholas Piggin wrote:
> When PMI interrupts are soft-masked, local_irq_save() will clear the PMI
> mask bit, allowing PMIs in and causing a race condition. This causes a
> deadlock in native_hpte_insert via hash_preload, which depends on PMIs
> being disabled
When PMI interrupts are soft-masked, local_irq_save() will clear the PMI
mask bit, allowing PMIs in and causing a race condition. This causes a
deadlock in native_hpte_insert via hash_preload, which depends on PMIs
being disabled since commit 8b91cee5eadd ("powerpc/64s/hash: Make hash
faults work
