On Tuesday 15 July 2025 12:43:16 Rostyslav Khudolii wrote: > > > > Yes, I would like to get access to ECS via CF8/CFC direct IO for > > debugging purposes, even though MMCFG is enabled and used. > > > > If you can send me a simple patch or any sample / idea how to do it, > > I would be very happy. I was not able to figure out how to enable ECS > > over CF8/CFC. > > > > Hi Pali, > I'm sorry for the late reply. > > If I understand your request correctly, all you need to do is patch > the pci_enable_pci_io_ecs() function to use > the different register to set EnableCF8ExtCfg: D18F4x044. > > Regards, > Ros Hello, thank you for information. Just I would like to know, where did you find information that the EnableCF8ExtCfg register was moved to D18F4x044? It is documented in some AMD specification? I did not find anything regarding this change. Pali
