number of MSB bits included in the group priority field comparison with optional IRQ_PRIORITY_ERROR bit set.</dd></dl>
<p>This function retrieves the number of MSB bits used to determine whether a pending interrupt has sufficient priority to preempt a currently active interrupt.</p>
<p><a class="el" href="group__irq__priority__defs.html#ga47b19866dc05c58c6923c313b371f881">IRQ_PRIORITY_ERROR</a> value is returned when priority grouping is not supported.</p>
<p>For Arm GIC the default implementation looks lik