[Bug 287492] Unable to detect NIC cards on few PCIe Gen5 slots on Dell R770 servers where x2APIC mode is enabled
| Newsgroups | gmane.os.freebsd.devel.net |
|---|---|
| Message-ID | <[email protected]/bugzilla/> |
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287492 John Baldwin <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #3 from John Baldwin <[email protected]> --- The issue is that for this system we need to support it's I/O MMU that is used to remap APIC IDs used in I/O APIC and MSI interrupts so that the interrupt message uses an APIC ID < 255, but it after it is remapped by the I/O MMU it ends up using a "real" APIC ID that can be larger. There are separate I/O MMU drivers for Intel systems (DMAR) vs AMD. 14.2 should have support for DMAR, but I believe only 15.0 has support for AMD's I/O MMU (and I'm not fully certain if interrupt remapping is enabled by default for AMD in 15.0). Can you confirm which CPU vendor you are using? -- You are receiving this mail because: You are the assignee for the bug.