supermicro x11sh-ln4 E3 1235l V5 ECC 18G The test results is perfect!
In addition, there is another possibility:
gen8, to turn off rmrr verification, you need to add Intel IOMMU = relax rmrr in the U disk startup
E3 Pro gaming V5 motherboard was used, it was no error. When the motherboard p10s-c / V4 , it appeared: pcieport 0000:001c.5: spurious naticw interrupt
The day after tomorrow, I'm going to test with another motherboard: supermicro x11sh-ln4
pcieport 0000:001c.5: spurious naticw interrupt
My system (p10s-c / V4,E3 1235L V5) also has this error, replacing the motherboard should be able to solve it.