[PATCH 3/3] net/ionic: add vdev support for embedded applications

[Honnappa Nagarahalli]

> On Feb 20, 2024, at 2:28 AM, Ferruh Yigit <ferruh.yigit at amd.com> wrote:
> 
> On 2/16/2024 5:07 PM, Andrew Boyer wrote:
>> +#if defined(RTE_LIBRTE_IONIC_PMD_BARRIER_ERRATA)
>> + /* On some devices the standard 'dmb' barrier is insufficient */
>> + asm volatile("dsb st" : : : "memory");
>> + rte_write64_relaxed(rte_cpu_to_le_64(val), q->db);
>> +#else
>> rte_write64(rte_cpu_to_le_64(val), q->db);
>> +#endif
>> 
> 
> Hi Honnappa, Ruifeng,
> 
> Should we have an API for the above asm instruction? What do you think?
We do not expect “dsb st” to be used as per the architecture in DPDK. This is being used here due to a hardware errata. Hence, we do not need an API for this.

>