Bug 96231
| Summary: | sparc64 can't handle BAR above 4GB | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Bjorn Helgaas (bjorn) |
| Component: | PCI | Assignee: | drivers_pci (drivers_pci) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | yinghai |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| URL: | http://lkml.kernel.org/r/CAE9FiQU1gJY1LYrxs+ma5LCTEEe4xmtjRG0aXJ9K_Tsu+m9Wuw@mail.gmail.com | ||
| Kernel Version: | v4.0-rc1 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Attachments: | dmesg log (failing) | ||
David Ahern bisected this to d63e2e1f3df9 ("sparc/PCI: Clip bridge windows to fit in upstream windows").
We reverted that with d10b730f97a7 ("Revert "sparc/PCI: Clip bridge windows to fit in upstream windows""), which appeared in v4.0, so this should be fixed.
We'd still like to include the original d63e2e1f3df9 functionality, to make this more consistent across architectures, but we need to fix the problems on sparc first.
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Created attachment 173261 [details] dmesg log (failing) David Ahern reported that v4.0-rc1 doesn't boot on sparc/T5-8. See attached dmesg log. pci 0000:06:00.0: reg 0x184: can't handle BAR above 4GB (bus address 0x110204000) pci 0000:06:00.0: reg 0x190: can't handle BAR above 4GB (bus address 0x110304000) ...