Hi,

we just got some AMD Ryzen 5 box. Time to test Jailhouse on some recent
AMD hardware.

It's equipped with a Gigabyte Aorus M mainboard (B450 chipset). We chose
it as it appears to have a COM port connector on the mainboard, but it's
crappy. While sending works, receiving doesn't work at all and sometimes
leads to interrupt storms. I don't trust it.

If I would by a PCIe RS232 card, are there any technical constraints
besides 8250/16550 compatibility? I think this card [1] should work, right?

Thanks
  Ralf

[1] https://www.amazon.de/dp/B00GT65XME/ref=psdc_1626220031_t1_B0037ECAOA

This card has a CH382 chipset, which is compatible to 8250, according to
drivers/tty/serial/8250/8250_pci.c .

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