Created attachment 305963 [details] lspci -vv on Dell Precision 3581 with Intel Raptor Lake processor (0W18NX) BIOS version: 1.10.1 From @nvaert1986 in bug #209943 [1]: I'm receiving the same error message on a Dell Precision 3581 with Intel Raptor Lake processor (0W18NX) BIOS version: 1.10.1 (latest version as of this moment) [ 0.509356] pci 0000:00:06.2: PTM enabled (root), 4ns granularity [ 0.509681] pci 0000:00:07.0: [8086:a76e] type 01 class 0x060400 [ 0.509765] pci 0000:00:07.0: PME# supported from D0 D3hot D3cold [ 0.509785] pci 0000:00:07.0: PTM enabled (root), 4ns granularity [ 0.509789] pci 0000:00:07.0: DPC: RP PIO log size 0 is invalid [ 0.510274] pci 0000:00:07.1: [8086:a73f] type 01 class 0x060400 [ 0.510362] pci 0000:00:07.1: PME# supported from D0 D3hot D3cold [ 0.510381] pci 0000:00:07.1: PTM enabled (root), 4ns granularity [ 0.510385] pci 0000:00:07.1: DPC: RP PIO log size 0 is invalid [ 0.510877] pci 0000:00:08.0: [8086:a74f] type 00 class 0x088000 [1]: https://bugzilla.kernel.org/show_bug.cgi?id=209943#c80
I sent a patch [1]. It’d be great, if you could test this, and reply with Tested-by. No idea, if other PCI devices need to be added. Mika, Bjorn, feel free to take over the patch. [1]: https://lore.kernel.org/linux-pci/20240305113057.56468-1-pmenzel@molgen.mpg.de/T/#u
Paul, I've tested the patch against kernel 6.6.20 and this seems to resolve the issue for me, as the log size 0 is invalid messages is gone. If I perform dmesg | grep RP or dmesg | grep PIO, I'm receiving the follow results: [ 0.530386] pci 0000:00:07.0: Overriding RP PIO Log Size to 4 [ 0.531285] pci 0000:00:07.1: Overriding RP PIO Log Size to 4 Tested-by nvaert1986@hotmail.com