Davidlohr Bueso wrote: > On Fri, 19 May 2023, LiuLele wrote: > > >In my testing CXL device /sys/bus/cxl/devices/mem0 not created, and the get error messages : > > > >``` > >cxl_pci 0000:0d:00.0: Failed to get interrupt for event Info log > >``` > > > >My test environment is a qemu CXL emulator with qemu v8.0.0, Linux kernel v6.3.0. > >While with kernel 5.9.13, /sys/bus/cxl/devices/mem0 can be created. > > Yes, this can be annoying and would argue the probe should not error out. I had to double check. Events are mandatory on devices. On checking again interrupt support is mandatory as well. So that is why I errored out here. With real HW this should not be an issue. > Regardless, the actual qemu support is in Jonathan's tree: > > https://gitlab.com/jic23/qemu/-/commit/a04e6476df363d1f6bc160577b30dda6564d3f67 That is the commit you need but it is probably best to use one of Jonathans 'official' branches. Looks like he just pushed a new one today. https://gitlab.com/jic23/qemu/-/tree/cxl-2023-05-19 I've not run that one yet. So if you have issues try his previous one it is working well for me. https://gitlab.com/jic23/qemu/-/tree/cxl-2023-04-19 Ira > > Thanks, > Davidlohr
