W dniu 23.01.2023 o 21:33, Bjorn Helgaas pisze: > On Sat, Jan 21, 2023 at 04:33:14PM +0100, Mateusz Jończyk wrote: >> On some platforms, the ACPI _PRT function returns duplicate interrupt >> routing entries. Linux uses the first matching entry, but sometimes the >> second matching entry contains the correct interrupt vector. >> >> Print an error to dmesg if duplicate interrupt routing entries are >> present, so that we could check how many models are affected. > It shouldn't be too hard to use qemu to figure out whether Windows > uses the last matching entry, i.e., treating _PRT entries as > assignments. If so, maybe Linux could just do the same. > > Is anybody up for that? > > Bjorn The hardware in question has a working Windows XP installation, and I could in theory check which interrupt vector it uses - but I think that such reverse engineering is forbidden by Windows' EULA. Greetings, Mateusz
