Hi Doug,
We found that on RHEL5 up1 we do not succeed to get MSI-X vectors with for
ConnectX with the mlx4 driver.
Note that on RHEL5 we do get them.
Any help will be appreciated.
Thanks
Tziporet
This is the output of lspci -vv so you can see that the MSI-X is available by
the device
13:00.0 InfiniBand: Mellanox Technologies MT25418 [ConnectX IB DDR] (rev a0)
Subsystem: Mellanox Technologies MT25418 [ConnectX IB DDR]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr+
Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 177
Region 0: Memory at fdf00000 (64-bit, non-prefetchable) [size=1M]
Region 2: Memory at f7000000 (64-bit, prefetchable) [size=8M]
Region 4: Memory at fdef0000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [40] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [48] Vital Product Data
Capabilities: [9c] MSI-X: Enable- Mask- TabSize=256
Vector table: BAR=4 offset=00000000
PBA: BAR=4 offset=00001000
Capabilities: [60] Express Endpoint IRQ 0
Device: Supported: MaxPayload 256 bytes, PhantFunc 0, ExtTag+
Device: Latency L0s <64ns, L1 unlimited
Device: AtnBtn- AtnInd- PwrInd-
Device: Errors: Correctable- Non-Fatal+ Fatal+ Unsupported-
Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
Device: MaxPayload 256 bytes, MaxReadReq 4096 bytes
Link: Supported Speed 2.5Gb/s, Width x8, ASPM L0s, Port 8
Link: Latency L0s unlimited, L1 unlimited
Link: ASPM Disabled RCB 64 bytes CommClk- ExtSynch-
Link: Speed 2.5Gb/s, Width x8
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