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
