Hi all, I was just rebasing my patches for linux 5.3-rc1 and noticed a possible regression that shows on both of my machines. It is also reproducible with the unmodified Ubuntu mainline kernel, downloadable at [1]. Running the lspci command takes 1-3 seconds with 5.3-rc1 (rather than an imperceivable amount of time). Booting with pci.dyndbg does not reveal why. $ uname -r 5.3.0-050300rc1-generic $ time lspci -vt 1>/dev/null real 0m2.321s user 0m0.026s sys 0m0.000s If none of you are aware of this or what is causing it, I will submit a bug report to Bugzilla. I am away from 2019-07-27 to mid 2019-08-04. I will post my patches for 5.3-rc1 before I leave. If possible, please have a quick look over them while I am away for trivial changes or oopsies for me to fix, so that I can fire off another series ASAP, so that later when we do a full analysis, there are less problems. Thank you! Kind regards, Nicholas Johnson [1] https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.3-rc1/