When attempting to boot a fresh Red hat 6.5 installation, kernel constantly
show the following message.
If user uses 6.4, none of this issue is seen.
06] PTE Read access is not set
dmar: DRHD: handling fault status reg 3
dmar: DMAR:[DMA Read] Request device [00:02.0] fault addr 7f800000
This only is seeing on Red Hat 6.5, same system configuration using Red Hat
6.4, do not cause this issu
Current workaournd is to disable iommu
Using both options resolve the issue
Intel_iommu=igfx_off
Or
Intel_iommu=off
I suspect of Kernel modules: i915, is there a Red Hat 6.5 bugzilla reporting
this or should I look for a i915 module?
Since same module is used on Red hat 6.4.
Details device [00:02.0]
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3 Processor
Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation Device 2212
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Interrupt: pin A routed to IRQ 16
Region 0: Memory at c0000000 (64-bit, non-prefetchable) [size=4M]
Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
Region 4: I/O ports at 6000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
Address: 00000000 Data: 0000
Capabilities: [d0] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a4] PCI Advanced Features
AFCap: TP+ FLR+
AFCtrl: FLR-
AFStatus: TP-
Kernel modules: i915
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