On 03/05/2024 15:01, Joey Gouly wrote: > @@ -1020,6 +1060,15 @@ static int setup_sigframe(struct rt_sigframe_user_layout *user, > __put_user_error(current->thread.fault_code, &esr_ctx->esr, err); > } > > + if (system_supports_poe() && err == 0 && user->poe_offset) { > + struct poe_context __user *poe_ctx = > + apply_user_offset(user, user->poe_offset); > + > + __put_user_error(POE_MAGIC, &poe_ctx->head.magic, err); > + __put_user_error(sizeof(*poe_ctx), &poe_ctx->head.size, err); > + __put_user_error(read_sysreg_s(SYS_POR_EL0), &poe_ctx->por_el0, err); Nit: would be nicer to have this in its own helper (preserve_poe_context()), like for the other optional records. Kevin