Bug 218107
| Summary: | ixgbe driver fails to load due to PCI device probing failure | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Sebastian Manciulea (manciuleas) |
| Component: | PCI | Assignee: | drivers_pci (drivers_pci) |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | bjorn |
| Priority: | P3 | ||
| Hardware: | Intel | ||
| OS: | Linux | ||
| Kernel Version: | Subsystem: | ||
| Regression: | Yes | Bisected commit-id: | |
| Attachments: |
pci_request_selected_regions fails for ixgbe
MCFG debug patch acpidump dmesg with PCI debug |
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Created attachment 305380 [details]
MCFG debug patch
Can you please attach the output of the "acpidump" command?
If it's practical for you to build a kernel, please apply this debug patch and attach the complete dmesg log after booting.
I think the problem is that the MCFG table (which should be dumped by acpidump) says [mem 0x80000000-0x8fffffff] is the ECAM space for [bus 00-ff], but it is not mentioned in a PNP0C02 _CRS method, and it is included in the host bridge window:
PCI: MMCONFIG for domain 0000 [bus 00-ff] at [mem 0x80000000-0x8fffffff] (base 0x80000000)
PCI: MMCONFIG at [mem 0x80000000-0x8fffffff] not reserved in ACPI motherboard resources
pci_bus 0000:00: root bus resource [mem 0x80000000-0xfeafffff window]
So Linux thinks [mem 0x80000000-0x8fffffff] is available for use and assigns it to the ixgbe devices:
pci 0000:06:00.0: BAR 0: assigned [mem 0x80100000-0x8017ffff]
I think the lack of a PNP0C02 _CRS that reserves the region is a BIOS defect, but I want to figure out if there's a way we can work around it.
Hello Bjorn, I have attached the requested debug information. Hopefully I got it right with your kernel patch, it's quite an adventure to compile the Proxmox kernel ... Regards, Sebastian Created attachment 305423 [details]
acpidump
Created attachment 305424 [details]
dmesg with PCI debug
Thanks very much, Sebastian! I'm marking this as a duplicate of Bug 218050, and I attached a patch there that I think will work around this defect. If you can test it, please attach the dmesg log to 218050. *** This bug has been marked as a duplicate of bug 218050 *** |
Created attachment 305372 [details] pci_request_selected_regions fails for ixgbe Hello, I have installed an Intel X520-DA2 NIC in a HP Proliant ML30 Gen9 server. With the default Proxmox 8 kernel, 6.2.16-4-pve, the ixgbe driver fails to load with the following errors: [ 1.709221] ixgbe 0000:06:00.0: enabling device (0140 -> 0142) [ 1.709498] ixgbe 0000:06:00.0: BAR 0: can't reserve [mem 0x80100000-0x8017ffff 64bit] [ 1.709500] ixgbe 0000:06:00.0: pci_request_selected_regions failed 0xfffffff0 [ 1.709895] ixgbe: probe of 0000:06:00.0 failed with error -16 [ 1.710247] ixgbe 0000:06:00.1: enabling device (0140 -> 0142) [ 1.710306] ixgbe 0000:06:00.1: BAR 0: can't reserve [mem 0x80180000-0x801fffff 64bit] [ 1.710308] ixgbe 0000:06:00.1: pci_request_selected_regions failed 0xfffffff0 [ 1.710384] ixgbe: probe of 0000:06:00.1 failed with error -16 Attached is the full dmesg output. I understand that the report is not for a self-compiled kernel, however based on my bug report on the Proxmox forum Bjorn Helgaas asked to open a similar bug report here for further investigation. Regards, Sebastian