On Mon, May 04, 2020 at 05:56:13PM -0400, Mouse wrote: > On the other, if anything else could possibly be poking at the device > while you're probing its mapping register to see how big it is, you've > got much worse problems already.
If CPU 2 tries to read/write registers on device B while CPU 1 probes device A's BAR for type/size, device A is enabled, and device A's base address is momentarily undefined, then I can see device A and B both responding to the same transaction and causing a fault to occur. Dave -- David Young dyo...@pobox.com Urbana, IL (217) 721-9981
