Hallo,
When I boot a kernel with iommu=force (this forces all pci_map_sgs
through the K8 aperture) and slab debugging on a Nforce4 x86-64
system the network corrupts data very quickly. Even when just
sshing somewhere ssh quickly aborts with MAC errors etc.
Reverting only forcedeth.c to the one from 2.6.14 fixes the problem.
I also tried to apply Ayaz's TSO fix, but that didn't fix
the problem.
Any ideas? The system is unusable with this so it's a release
critical bug for 2.6.15 imho.
The system is a Tyan S2895 SLI board with two on board Nvidia
NICs:
forcedeth.c: Reverse Engineered nForce ethernet driver. Version 0.48.
eth0: forcedeth.c: subsystem: 010f1:2895 bound to 0000:00:0a.0
eth1: forcedeth.c: subsystem: 010f1:2895 bound to 0000:80:0a.0
80:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)
Subsystem: Tyan Computer: Unknown device 2895
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Step
ping- SERR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0 (250ns min, 5000ns max)
Interrupt: pin A routed to IRQ 185
Region 0: Memory at 00000000d8401000 (32-bit, non-prefetchable) [size=4K
]
Region 1: I/O ports at 3000 [size=8]
Capabilities: [44] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot
+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00: de 10 57 00 07 00 b0 00 a3 00 80 06 00 00 00 00
10: 00 10 40 d8 01 30 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 f1 10 95 28
30: 00 00 00 00 44 00 00 00 00 00 00 00 05 01 01 14
00:0a.0 Bridge: nVidia Corporation CK804 Ethernet Controller (rev a3)
Subsystem: Tyan Computer: Unknown device 2895
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SE
RR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort-
>SERR- <PERR-
Latency: 0 (250ns min, 5000ns max)
Interrupt: pin A routed to IRQ 177
Region 0: Memory at 00000000c8005000 (32-bit, non-prefetchable)
[size=4K]
Region 1: I/O ports at 1c60 [size=8]
Capabilities: [44] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
PME(D0+,D1+,D2+,D3hot+,D3cold
+)
Status: D0 PME-Enable+ DSel=0 DScale=0 PME-
00: de 10 57 00 07 00 b0 00 a3 00 80 06 00 00 00 00
10: 00 50 00 c8 61 1c 00 00 00 00 00 00 00 00 00 00
20: 00 00 00 00 00 00 00 00 00 00 00 00 f1 10 95 28
30: 00 00 00 00 44 00 00 00 00 00 00 00 0b 01 01 14
-Andi
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