> From: Jason Gunthorpe <jgg@xxxxxxxxxx> > Sent: Friday, September 22, 2023 5:53 PM > > And what's more, using MMIO BAR0 then it can work for legacy. > > Oh? How? Our team didn't think so. It does not. It was already discussed. The device reset in legacy is not synchronous. The drivers do not wait for reset to complete; it was written for the sw backend. Hence MMIO BAR0 is not the best option in real implementations.
