[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH RFC] p2m: p2m_mmio_direct set RW permissions



On Fri, Jan 23, 2015 at 10:50:23AM +0000, Jan Beulich wrote:
> >>> On 22.01.15 at 18:34, <elena.ufimtseva@xxxxxxxxxx> wrote:
> > On Thu, Jan 22, 2015 at 04:42:52PM +0100, Roger Pau Monné wrote:
> >> El 22/01/15 a les 16.18, Elena Ufimtseva ha escrit:
> >> > 
> >> > ----- JBeulich@xxxxxxxx wrote:
> >> > 
> >> >>>>> On 22.01.15 at 12:37, <roger.pau@xxxxxxxxxx> wrote:
> >> >>> El 22/01/15 a les 12.09, Jan Beulich ha escrit:
> >> >>>>>>> On 22.01.15 at 11:59, <andrew.cooper3@xxxxxxxxxx> wrote:
> >> >>>>> On 22/01/15 09:53, Jan Beulich wrote:
> >> >>>>>>>>> On 21.01.15 at 21:55, <elena.ufimtseva@xxxxxxxxxx> wrote:
> >> >>>>>>> p2m_mmio_direct should result in setting IOMMUF_readable and
> >> >> IOMMUF_writable
> >> >>>>>>> flags.
> >> >>>>>>> When pvh domain maps mmio regions, the EPT entries are not
> >> >> getting mapped.
> >> >>>>>>> This leads to IOMMU Page faults for some devices, as for example
> >> >> USB Host
> >> >>>>>>> controllers with embedded Debug devices. See
> >> >> pvh-set-need_iommu-early RFC
> >> >>>>>>> patch discussion fgor detail.
> >> >>>>>> Even more so that the two patches aren't even a series, that
> >> >> part
> >> >>>>>> of the description belongs here, not in the other patch.
> >> >>>>>>
> >> >>>>>>> I will appreciate your comments and ideas in regards to this
> >> >> change.
> >> >>>>>>>
> >> >>>>>>> Looking at Roger patches (xen/pvh: check permissions when adding
> >> >> MMIO 
> >> >>>>>>> regions)
> >> >>>>>>> the mmio memory type is proposed to be changed from
> >> >> p2m_mmio_direct to 
> >> >>>>>>> p2m_access_rw.
> >> >>>>>>> This type still does not have proper IOMMU flags mapping.
> >> >>>>>> A fundamental question is what business devices have to DMA
> >> >> their
> >> >>>>>> own (or other devices') MMIO space. I could remotely see a need
> >> >>>>>> for this for e.g. frame buffers, but I have difficulty
> >> >> understanding
> >> >>>>>> this for USB devices. Please at the very least provide details on
> >> >> the
> >> >>>>>> MMIO regions that those devices have, and which of them you
> >> >>>>>> observed IOMMU faults on.
> >> >>>>>
> >> >>>>> It would appear that, in this case, it is a USB controller lacking
> >> >> an
> >> >>>>> appropriate RMRR description in the ACPI tables.
> >> >>>>
> >> >>>> No, RMRRs only reference RAM pages afaik.
> >> >>>
> >> >>> According to Linux IOMMU support document RMRRs reference regions
> >> >> marked
> >> >>> as "reserved" in the e820 memory map:
> >> >>>
> >> >>> https://www.kernel.org/doc/Documentation/Intel-IOMMU.txt 
> >> >>
> >> >> Exactly. And MMIO PCI BARs in particular are never to be
> >> >> reflected in the E820 (not the least because they're relocatable).
> >> >>
> >> >>> I don't think we are setting proper IOMMU entries for this regions
> >> >> at
> >> >>> all with the current PVH Dom0 code. IMHO instead of just adding
> >> >> IOMMU
> >> >>> entries for every MMIO region we should just add IOMMU entries for
> >> >> the
> >> >>> RMRR regions.
> >> >>
> >> >> Yes, RMRR regions should certainly be put there as r/w entries.
> >> >>
> >> >> Jan
> >> > 
> >> > How it will help in cases like this when this regions are not reported 
> >> > as 
> > RMRRs in ACPI?
> >> 
> >> AFAIK even if they are properly reported as RMRRs they won't have the
> >> right IOMMU mappings, are you sure they are not reported as RMRRs?
> >> 
> >> Roger.
> >>
> > 
> > Here are some details on machine config, lspci and etc.
> > 
> > Bare metal:
> > 
> > lspci
> > 
> > 
> > 00:00.0 0600: 8086:0c00 (rev 06)
> >     Subsystem: 17aa:3097
> >     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-
> >     Latency: 0
> >     Capabilities: [e0] Vendor Specific Information: Len=0c <?>
> >     Kernel driver in use: hsw_uncore
> > 
> > 00:02.0 0300: 8086:0412 (rev 06) (prog-if 00 [VGA controller])
> >     Subsystem: 17aa:3097
> >     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-
> >     Latency: 0
> >     Interrupt: pin A routed to IRQ 30
> >     Region 0: Memory at f7800000 (64-bit, non-prefetchable) [size=4M]
> >     Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
> >     Region 4: I/O ports at f000 [size=64]
> >     Expansion ROM at <unassigned> [disabled]
> >     Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
> >             Address: fee00018  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 driver in use: i915
> > 
> > 00:03.0 0403: 8086:0c0c (rev 06)
> >     Subsystem: 17aa:3097
> >     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-
> >     Latency: 0, Cache Line Size: 64 bytes
> >     Interrupt: pin A routed to IRQ 31
> >     Region 0: Memory at f7c30000 (64-bit, non-prefetchable) [size=16K]
> >     Capabilities: [50] 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: [60] MSI: Enable+ Count=1/1 Maskable- 64bit-
> >             Address: fee003d8  Data: 0000
> >     Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
> >             DevCap: MaxPayload 128 bytes, PhantFunc 0
> >                     ExtTag- RBE-
> >             DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
> > Unsupported-
> >                     RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
> >                     MaxPayload 128 bytes, MaxReadReq 128 bytes
> >             DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- 
> > TransPend-
> >     Kernel driver in use: snd_hda_intel
> > 
> > 00:14.0 0c03: 8086:8c31 (rev 05) (prog-if 30 [XHCI])
> >     Subsystem: 17aa:3097
> >     Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
> > Stepping- SERR- 
> > FastB2B- DisINTx+
> >     Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
> > <TAbort- <MAbort- 
> > >SERR- <PERR- INTx-
> >     Latency: 0
> >     Interrupt: pin A routed to IRQ 28
> >     Region 0: Memory at f7c20000 (64-bit, non-prefetchable) [size=64K]
> >     Capabilities: [70] Power Management version 2
> >             Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA 
> > PME(D0-,D1-,D2-,D3hot+,D3cold+)
> >             Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> >     Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
> >             Address: 00000000fee00378  Data: 0000
> >     Kernel driver in use: xhci_hcd
> > 
> > 00:16.0 0780: 8086:8c3a (rev 04)
> >     Subsystem: 17aa:3097
> >     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-
> >     Latency: 0
> >     Interrupt: pin A routed to IRQ 29
> >     Region 0: Memory at f7c3b000 (64-bit, non-prefetchable) [size=16]
> >     Capabilities: [50] Power Management version 3
> >             Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
> > PME(D0+,D1-,D2-,D3hot+,D3cold+)
> >             Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> >     Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
> >             Address: 00000000fee00398  Data: 0000
> >     Kernel driver in use: mei_me
> > 
> > 00:19.0 0200: 8086:153a (rev 05)
> >     Subsystem: 17aa:3097
> >     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-
> >     Latency: 0
> >     Interrupt: pin A routed to IRQ 26
> >     Region 0: Memory at f7c00000 (32-bit, non-prefetchable) [size=128K]
> >     Region 1: Memory at f7c39000 (32-bit, non-prefetchable) [size=4K]
> >     Region 2: I/O ports at f080 [size=32]
> >     Capabilities: [c8] 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=1 PME-
> >     Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
> >             Address: 00000000fee002f8  Data: 0000
> >     Capabilities: [e0] PCI Advanced Features
> >             AFCap: TP+ FLR+
> >             AFCtrl: FLR-
> >             AFStatus: TP-
> >     Kernel driver in use: e1000e
> > 
> > 00:1a.0 0c03: 8086:8c2d (rev 05) (prog-if 20 [EHCI])
> >     Subsystem: 17aa:3097
> >     Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
> > Stepping- SERR- 
> > FastB2B- DisINTx-
> >     Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
> > <TAbort- <MAbort- 
> > >SERR- <PERR- INTx-
> >     Latency: 0
> >     Interrupt: pin A routed to IRQ 17
> >     Region 0: Memory at f7c38000 (32-bit, non-prefetchable) [size=1K]
> >     Capabilities: [50] Power Management version 2
> >             Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA 
> > PME(D0+,D1-,D2-,D3hot+,D3cold+)
> >             Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
> >     Capabilities: [58] Debug port: BAR=1 offset=00a0
> >     Capabilities: [98] PCI Advanced Features
> >             AFCap: TP+ FLR+
> >             AFCtrl: FLR-
> >             AFStatus: TP-
> >     Kernel driver in use: ehci-pci
> > 
> > 00:1c.0 0604: 8086:8c10 (rev d5) (prog-if 00 [Normal decode])
> >     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-
> >     Latency: 0, Cache Line Size: 64 bytes
> >     Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
> >     I/O behind bridge: 0000f000-00000fff
> >     Memory behind bridge: fff00000-000fffff
> >     Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
> >     Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
> > <MAbort+ 
> > <SERR- <PERR-
> >     BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
> >             PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
> >     Capabilities: [40] Express (v2) Root Port (Slot-), MSI 00
> >             DevCap: MaxPayload 128 bytes, PhantFunc 0
> >                     ExtTag- RBE+
> >             DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
> > Unsupported-
> >                     RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
> >                     MaxPayload 128 bytes, MaxReadReq 128 bytes
> >             DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ 
> > TransPend-
> >             LnkCap: Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit 
> > Latency L0s <1us, L1 
> > <4us
> >                     ClockPM- Surprise- LLActRep+ BwNot+
> >             LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk-
> >                     ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
> >             LnkSta: Speed 2.5GT/s, Width x0, TrErr- Train- SlotClk+ 
> > DLActive- BWMgmt- ABWMgmt-
> >             RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- 
> > CRSVisible-
> >             RootCap: CRSVisible-
> >             RootSta: PME ReqID 0000, PMEStatus- PMEPending-
> >             DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF 
> > Via WAKE# 
> > ARIFwd-
> >             DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, 
> > OBFF Disabled 
> > ARIFwd-
> >             LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
> >                      Transmit Margin: Normal Operating Range, 
> > EnterModifiedCompliance- 
> > ComplianceSOS-
> >                      Compliance De-emphasis: -6dB
> >             LnkSta2: Current De-emphasis Level: -3.5dB, 
> > EqualizationComplete-, 
> > EqualizationPhase1-
> >                      EqualizationPhase2-, EqualizationPhase3-, 
> > LinkEqualizationRequest-
> >     Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
> >             Address: 00000000  Data: 0000
> >     Capabilities: [90] Subsystem: 17aa:3097
> >     Capabilities: [a0] Power Management version 3
> >             Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
> > PME(D0+,D1-,D2-,D3hot+,D3cold+)
> >             Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
> >     Kernel driver in use: pcieport
> > 
> > 00:1c.3 0604: 8086:8c16 (rev d5) (prog-if 00 [Normal decode])
> >     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-
> >     Latency: 0, Cache Line Size: 64 bytes
> >     Bus: primary=00, secondary=02, subordinate=03, sec-latency=0
> >     I/O behind bridge: 0000f000-00000fff
> >     Memory behind bridge: fff00000-000fffff
> >     Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
> >     Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- 
> > <MAbort+ 
> > <SERR- <PERR-
> >     BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
> >             PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
> >     Capabilities: [40] Express (v2) Root Port (Slot+), MSI 00
> >             DevCap: MaxPayload 128 bytes, PhantFunc 0
> >                     ExtTag- RBE+
> >             DevCtl: Report errors: Correctable- Non-Fatal- Fatal- 
> > Unsupported-
> >                     RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
> >                     MaxPayload 128 bytes, MaxReadReq 128 bytes
> >             DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ 
> > TransPend-
> >             LnkCap: Port #4, Speed 5GT/s, Width x1, ASPM L0s L1, Exit 
> > Latency L0s <1us, L1 
> > <16us
> >                     ClockPM- Surprise- LLActRep+ BwNot+
> >             LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk-
> >                     ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
> >             LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ 
> > DLActive+ BWMgmt+ 
> > ABWMgmt-
> >             SltCap: AttnBtn- PwrCtrl- MRL- AttnInd- PwrInd- HotPlug- 
> > Surprise-
> >                     Slot #3, PowerLimit 10.000W; Interlock- NoCompl+
> >             SltCtl: Enable: AttnBtn- PwrFlt- MRL- PresDet- CmdCplt- HPIrq- 
> > LinkChg-
> >                     Control: AttnInd Unknown, PwrInd Unknown, Power- 
> > Interlock-
> >             SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ 
> > Interlock-
> >                     Changed: MRL- PresDet- LinkState-
> >             RootCtl: ErrCorrectable- ErrNon-Fatal- ErrFatal- PMEIntEna- 
> > CRSVisible-
> >             RootCap: CRSVisible-
> >             RootSta: PME ReqID 0000, PMEStatus- PMEPending-
> >             DevCap2: Completion Timeout: Range ABC, TimeoutDis+, LTR+, OBFF 
> > Not 
> > Supported ARIFwd-
> >             DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR+, 
> > OBFF Disabled 
> > ARIFwd-
> >             LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
> >                      Transmit Margin: Normal Operating Range, 
> > EnterModifiedCompliance- 
> > ComplianceSOS-
> >                      Compliance De-emphasis: -6dB
> >             LnkSta2: Current De-emphasis Level: -3.5dB, 
> > EqualizationComplete-, 
> > EqualizationPhase1-
> >                      EqualizationPhase2-, EqualizationPhase3-, 
> > LinkEqualizationRequest-
> >     Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
> >             Address: 00000000  Data: 0000
> >     Capabilities: [90] Subsystem: 17aa:3097
> >     Capabilities: [a0] Power Management version 3
> >             Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
> > PME(D0+,D1-,D2-,D3hot+,D3cold+)
> >             Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
> >     Kernel driver in use: pcieport
> > 
> > 00:1d.0 0c03: 8086:8c26 (rev 05) (prog-if 20 [EHCI])
> >     Subsystem: 17aa:3097
> >     Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
> > Stepping- SERR- 
> > FastB2B- DisINTx-
> >     Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
> > <TAbort- <MAbort- 
> > >SERR- <PERR- INTx-
> >     Latency: 0
> >     Interrupt: pin A routed to IRQ 23
> >     Region 0: Memory at f7c37000 (32-bit, non-prefetchable) [size=1K]
> >     Capabilities: [50] Power Management version 2
> >             Flags: PMEClk- DSI- D1- D2- AuxCurrent=375mA 
> > PME(D0+,D1-,D2-,D3hot+,D3cold+)
> >             Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
> >     Capabilities: [58] Debug port: BAR=1 offset=00a0
> >     Capabilities: [98] PCI Advanced Features
> >             AFCap: TP+ FLR+
> >             AFCtrl: FLR-
> >             AFStatus: TP-
> >     Kernel driver in use: ehci-pci
> > 
> > 00:1f.0 0601: 8086:8c4e (rev 05)
> >     Subsystem: 17aa:3097
> >     Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
> > Stepping- 
> > SERR- FastB2B- DisINTx-
> >     Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
> > <TAbort- <MAbort- 
> > >SERR- <PERR- INTx-
> >     Latency: 0
> >     Capabilities: [e0] Vendor Specific Information: Len=0c <?>
> >     Kernel driver in use: lpc_ich
> > 
> > 00:1f.2 0106: 8086:8c02 (rev 05) (prog-if 01 [AHCI 1.0])
> >     Subsystem: 17aa:3097
> >     Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
> > Stepping- 
> > SERR- FastB2B- DisINTx+
> >     Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
> > <TAbort- <MAbort- 
> > >SERR- <PERR- INTx-
> >     Latency: 0
> >     Interrupt: pin B routed to IRQ 27
> >     Region 0: I/O ports at f0d0 [size=8]
> >     Region 1: I/O ports at f0c0 [size=4]
> >     Region 2: I/O ports at f0b0 [size=8]
> >     Region 3: I/O ports at f0a0 [size=4]
> >     Region 4: I/O ports at f060 [size=32]
> >     Region 5: Memory at f7c36000 (32-bit, non-prefetchable) [size=2K]
> >     Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
> >             Address: fee00358  Data: 0000
> >     Capabilities: [70] Power Management version 3
> >             Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
> > PME(D0-,D1-,D2-,D3hot+,D3cold-)
> >             Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
> >     Capabilities: [a8] SATA HBA v1.0 BAR4 Offset=00000004
> >     Kernel driver in use: ahci
> > 
> > 00:1f.3 0c05: 8086:8c22 (rev 05)
> >     Subsystem: 17aa:3097
> >     Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- 
> > Stepping- SERR- 
> > FastB2B- DisINTx-
> >     Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
> > <TAbort- <MAbort- 
> > >SERR- <PERR- INTx-
> >     Interrupt: pin C routed to IRQ 18
> >     Region 0: Memory at f7c35000 (64-bit, non-prefetchable) [size=256]
> >     Region 4: I/O ports at 0580 [size=32]
> > 
> > 02:00.0 0604: 1283:8893 (rev 41) (prog-if 01 [Subtractive decode])
> >     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-
> >     Latency: 0, Cache Line Size: 64 bytes
> >     Bus: primary=02, secondary=03, subordinate=03, sec-latency=32
> >     I/O behind bridge: 0000f000-00000fff
> >     Memory behind bridge: fff00000-000fffff
> >     Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
> >     Secondary status: 66MHz+ FastB2B- ParErr- DEVSEL=medium >TAbort- 
> > <TAbort- <MAbort+ 
> > <SERR- <PERR-
> >     BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
> >             PriDiscTmr- SecDiscTmr+ DiscTmrStat- DiscTmrSERREn-
> >     Capabilities: [90] Power Management version 2
> >             Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=55mA 
> > PME(D0+,D1+,D2+,D3hot+,D3cold+)
> >             Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
> >     Capabilities: [a0] Subsystem: 17aa:3097
> > 
> > 
> > 
> > 
> > # dmidecode 2.12
> > SMBIOS 2.8 present.
> > 89 structures occupying 3527 bytes.
> > Table at 0x000EDC10.
> > 
> > Handle 0x0000, DMI type 0, 24 bytes
> > BIOS Information
> >     Vendor: LENOVO
> >     Version: FBKTA4AUS
> >     Release Date: 12/11/2014
> >     Address: 0xF0000
> >     Runtime Size: 64 kB
> >     ROM Size: 6656 kB
> >     Characteristics:
> >             PCI is supported
> >             BIOS is upgradeable
> >             BIOS shadowing is allowed
> >             Boot from CD is supported
> >             Selectable boot is supported
> >             BIOS ROM is socketed
> >             EDD is supported
> >             5.25"/1.2 MB floppy services are supported (int 13h)
> >             3.5"/720 kB floppy services are supported (int 13h)
> >             3.5"/2.88 MB floppy services are supported (int 13h)
> >             Print screen service is supported (int 5h)
> >             8042 keyboard services are supported (int 9h)
> >             Serial services are supported (int 14h)
> >             Printer services are supported (int 17h)
> >             ACPI is supported
> >             USB legacy is supported
> >             BIOS boot specification is supported
> >             Targeted content distribution is supported
> >             UEFI is supported
> >     BIOS Revision: 1.164
> >     Firmware Revision: 1.13
> > 
> > Handle 0x0001, DMI type 1, 27 bytes
> > System Information
> >     Manufacturer: LENOVO
> >     Product Name: 10A6S09R01
> >     Version: ThinkCentre M93p
> >     Serial Number:  
> >     UUID: CD155584-7150-11E4-A0B5-AE7A9F861500
> >     Wake-up Type: Power Switch
> >     SKU Number: LENOVO_MT_10A6
> >     Family: To be filled by O.E.M.
> > 
> > Handle 0x0002, DMI type 2, 15 bytes
> > Base Board Information
> >     Manufacturer: LENOVO
> >     Product Name: SHARKBAY
> >     Version: 0B98401 WIN
> >     Serial Number:                     
> >     Asset Tag:                          
> >     Features:
> >             Board is a hosting board
> >             Board is replaceable
> >     Location In Chassis: To be filled by O.E.M.
> >     Chassis Handle: 0x0003
> >     Type: Motherboard
> >     Contained Object Handles: 0
> > 
> > Handle 0x0003, DMI type 3, 25 bytes
> > Chassis Information
> >     Manufacturer: To Be Filled By O.E.M.
> >     Type: Desktop
> >     Lock: Not Present
> >     Version: To Be Filled By O.E.M.
> >     Serial Number: MJ01S0UJ
> >     Asset Tag:  
> >     Boot-up State: Safe
> >     Power Supply State: Safe
> >     Thermal State: Safe
> >     Security Status: None
> >     OEM Information: 0x00000000
> >     Height: Unspecified
> >     Number Of Power Cords: 1
> >     Contained Elements: 1
> >             <OUT OF SPEC> (0)
> >     SKU Number: To be filled by O.E.M.
> > 
> > Handle 0x0004, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J1A1
> >     Internal Connector Type: None
> >     External Reference Designator: PS2Mouse
> >     External Connector Type: PS/2
> >     Port Type: Mouse Port
> > 
> > Handle 0x0005, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J1A1
> >     Internal Connector Type: None
> >     External Reference Designator: Keyboard
> >     External Connector Type: PS/2
> >     Port Type: Keyboard Port
> > 
> > Handle 0x0006, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J2A1
> >     Internal Connector Type: None
> >     External Reference Designator: TV Out
> >     External Connector Type: Mini Centronics Type-14
> >     Port Type: Other
> > 
> > Handle 0x0007, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J2A2A
> >     Internal Connector Type: None
> >     External Reference Designator: COM A
> >     External Connector Type: DB-9 male
> >     Port Type: Serial Port 16550A Compatible
> > 
> > Handle 0x0008, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J2A2B
> >     Internal Connector Type: None
> >     External Reference Designator: Video
> >     External Connector Type: DB-15 female
> >     Port Type: Video Port
> > 
> > Handle 0x0009, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J3A1
> >     Internal Connector Type: None
> >     External Reference Designator: USB1
> >     External Connector Type: Access Bus (USB)
> >     Port Type: USB
> > 
> > Handle 0x000A, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J3A1
> >     Internal Connector Type: None
> >     External Reference Designator: USB2
> >     External Connector Type: Access Bus (USB)
> >     Port Type: USB
> > 
> > Handle 0x000B, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J3A1
> >     Internal Connector Type: None
> >     External Reference Designator: USB3
> >     External Connector Type: Access Bus (USB)
> >     Port Type: USB
> > 
> > Handle 0x000C, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J9A1 - TPM HDR
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x000D, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J9C1 - PCIE DOCKING CONN
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x000E, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J2B3 - CPU FAN
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x000F, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J6C2 - EXT HDMI
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0010, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J3C1 - GMCH FAN
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0011, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J1D1 - ITP
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0012, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J9E2 - MDC INTPSR
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0013, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J9E4 - MDC INTPSR
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0014, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J9E3 - LPC HOT DOCKING
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0015, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J9E1 - SCAN MATRIX
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0016, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J9G1 - LPC SIDE BAND
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0017, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J8F1 - UNIFIED
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0018, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J6F1 - LVDS
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x0019, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J2F1 - LAI FAN
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x001A, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J2G1 - GFX VID
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x001B, DMI type 8, 9 bytes
> > Port Connector Information
> >     Internal Reference Designator: J1G6 - AC JACK
> >     Internal Connector Type: Other
> >     External Reference Designator: Not Specified
> >     External Connector Type: None
> >     Port Type: Other
> > 
> > Handle 0x001C, DMI type 9, 17 bytes
> > System Slot Information
> >     Designation: J6B2
> >     Type: x16 PCI Express
> >     Current Usage: In Use
> >     Length: Long
> >     ID: 0
> >     Characteristics:
> >             3.3 V is provided
> >             Opening is shared
> >             PME signal is supported
> >     Bus Address: 0000:00:01.0
> > 
> > Handle 0x001D, DMI type 9, 17 bytes
> > System Slot Information
> >     Designation: J6B1
> >     Type: x1 PCI Express
> >     Current Usage: In Use
> >     Length: Short
> >     ID: 1
> >     Characteristics:
> >             3.3 V is provided
> >             Opening is shared
> >             PME signal is supported
> >     Bus Address: 0000:00:1c.3
> > 
> > Handle 0x001E, DMI type 9, 17 bytes
> > System Slot Information
> >     Designation: J6D1
> >     Type: x1 PCI Express
> >     Current Usage: In Use
> >     Length: Short
> >     ID: 2
> >     Characteristics:
> >             3.3 V is provided
> >             Opening is shared
> >             PME signal is supported
> >     Bus Address: 0000:00:1c.4
> > 
> > Handle 0x001F, DMI type 9, 17 bytes
> > System Slot Information
> >     Designation: J7B1
> >     Type: x1 PCI Express
> >     Current Usage: In Use
> >     Length: Short
> >     ID: 3
> >     Characteristics:
> >             3.3 V is provided
> >             Opening is shared
> >             PME signal is supported
> >     Bus Address: 0000:00:1c.5
> > 
> > Handle 0x0020, DMI type 10, 12 bytes
> > On Board Device 1 Information
> >     Type: Video
> >     Status: Enabled
> >     Description:    Onboard Video
> > On Board Device 2 Information
> >     Type: Ethernet
> >     Status: Enabled
> >     Description: Onboard LAN
> > On Board Device 3 Information
> >     Type: Sound
> >     Status: Disabled
> >     Description:   Onboard Audio
> > On Board Device 4 Information
> >     Type: SATA Controller
> >     Status: Enabled
> >     Description:   Sata Controller
> > 
> > Handle 0x0021, DMI type 11, 5 bytes
> > OEM Strings
> >     String 1: LENOVO ThinkCentre Embedded Controller -[FBCT13A-1.13]-
> >     String 2: LENOVO ThinkCentre BIOS Boot Block Revision 1.A1
> > 
> > Handle 0x0022, DMI type 12, 5 bytes
> > System Configuration Options
> >     Option 1: scre++
> > 
> > Handle 0x0023, DMI type 24, 5 bytes
> > Hardware Security
> >     Power-On Password Status: Disabled
> >     Keyboard Password Status: Enabled
> >     Administrator Password Status: Disabled
> >     Front Panel Reset Status: Not Implemented
> > 
> > Handle 0x0024, DMI type 32, 20 bytes
> > System Boot Information
> >     Status: No errors detected
> > 
> > Handle 0x0025, DMI type 34, 11 bytes
> > Management Device
> >     Description: LM78-1
> >     Type: LM78
> >     Address: 0x00000000
> >     Address Type: I/O Port
> > 
> > Handle 0x0026, DMI type 26, 22 bytes
> > Voltage Probe
> >     Description: LM78A
> >     Location: <OUT OF SPEC>
> >     Status: <OUT OF SPEC>
> >     Maximum Value: Unknown
> >     Minimum Value: Unknown
> >     Resolution: Unknown
> >     Tolerance: Unknown
> >     Accuracy: Unknown
> >     OEM-specific Information: 0x00000000
> >     Nominal Value: Unknown
> > 
> > Handle 0x0027, DMI type 36, 16 bytes
> > Management Device Threshold Data
> >     Lower Non-critical Threshold: 1
> >     Upper Non-critical Threshold: 2
> >     Lower Critical Threshold: 3
> >     Upper Critical Threshold: 4
> >     Lower Non-recoverable Threshold: 5
> >     Upper Non-recoverable Threshold: 6
> > 
> > Handle 0x0028, DMI type 35, 11 bytes
> > Management Device Component
> >     Description: To Be Filled By O.E.M.
> >     Management Device Handle: 0x0025
> >     Component Handle: 0x0025
> >     Threshold Handle: 0x0026
> > 
> > Handle 0x0029, DMI type 28, 22 bytes
> > Temperature Probe
> >     Description: LM78A
> >     Location: <OUT OF SPEC>
> >     Status: <OUT OF SPEC>
> >     Maximum Value: Unknown
> >     Minimum Value: Unknown
> >     Resolution: Unknown
> >     Tolerance: Unknown
> >     Accuracy: Unknown
> >     OEM-specific Information: 0x00000000
> >     Nominal Value: Unknown
> > 
> > Handle 0x002A, DMI type 36, 16 bytes
> > Management Device Threshold Data
> >     Lower Non-critical Threshold: 1
> >     Upper Non-critical Threshold: 2
> >     Lower Critical Threshold: 3
> >     Upper Critical Threshold: 4
> >     Lower Non-recoverable Threshold: 5
> >     Upper Non-recoverable Threshold: 6
> > 
> > Handle 0x002B, DMI type 35, 11 bytes
> > Management Device Component
> >     Description: To Be Filled By O.E.M.
> >     Management Device Handle: 0x0025
> >     Component Handle: 0x0028
> >     Threshold Handle: 0x0029
> > 
> > Handle 0x002C, DMI type 27, 15 bytes
> > Cooling Device
> >     Temperature Probe Handle: 0x0029
> >     Type: <OUT OF SPEC>
> >     Status: <OUT OF SPEC>
> >     Cooling Unit Group: 1
> >     OEM-specific Information: 0x00000000
> >     Nominal Speed: Unknown Or Non-rotating
> >     Description: Cooling Dev 1
> > 
> > Handle 0x002D, DMI type 36, 16 bytes
> > Management Device Threshold Data
> >     Lower Non-critical Threshold: 1
> >     Upper Non-critical Threshold: 2
> >     Lower Critical Threshold: 3
> >     Upper Critical Threshold: 4
> >     Lower Non-recoverable Threshold: 5
> >     Upper Non-recoverable Threshold: 6
> > 
> > Handle 0x002E, DMI type 35, 11 bytes
> > Management Device Component
> >     Description: To Be Filled By O.E.M.
> >     Management Device Handle: 0x0025
> >     Component Handle: 0x002B
> >     Threshold Handle: 0x002C
> > 
> > Handle 0x002F, DMI type 27, 15 bytes
> > Cooling Device
> >     Temperature Probe Handle: 0x0029
> >     Type: <OUT OF SPEC>
> >     Status: <OUT OF SPEC>
> >     Cooling Unit Group: 1
> >     OEM-specific Information: 0x00000000
> >     Nominal Speed: Unknown Or Non-rotating
> >     Description: Not Specified
> > 
> > Handle 0x0030, DMI type 36, 16 bytes
> > Management Device Threshold Data
> >     Lower Non-critical Threshold: 1
> >     Upper Non-critical Threshold: 2
> >     Lower Critical Threshold: 3
> >     Upper Critical Threshold: 4
> >     Lower Non-recoverable Threshold: 5
> >     Upper Non-recoverable Threshold: 6
> > 
> > Handle 0x0031, DMI type 35, 11 bytes
> > Management Device Component
> >     Description: To Be Filled By O.E.M.
> >     Management Device Handle: 0x0025
> >     Component Handle: 0x002E
> >     Threshold Handle: 0x002F
> > 
> > Handle 0x0032, DMI type 29, 22 bytes
> > Electrical Current Probe
> >     Description: ABC
> >     Location: <OUT OF SPEC>
> >     Status: <OUT OF SPEC>
> >     Maximum Value: Unknown
> >     Minimum Value: Unknown
> >     Resolution: Unknown
> >     Tolerance: Unknown
> >     Accuracy: Unknown
> >     OEM-specific Information: 0x00000000
> >     Nominal Value: Unknown
> > 
> > Handle 0x0033, DMI type 36, 16 bytes
> > Management Device Threshold Data
> > 
> > Handle 0x0034, DMI type 35, 11 bytes
> > Management Device Component
> >     Description: To Be Filled By O.E.M.
> >     Management Device Handle: 0x0025
> >     Component Handle: 0x0031
> >     Threshold Handle: 0x002F
> > 
> > Handle 0x0035, DMI type 26, 22 bytes
> > Voltage Probe
> >     Description: LM78A
> >     Location: Power Unit
> >     Status: OK
> >     Maximum Value: Unknown
> >     Minimum Value: Unknown
> >     Resolution: Unknown
> >     Tolerance: Unknown
> >     Accuracy: Unknown
> >     OEM-specific Information: 0x00000000
> >     Nominal Value: Unknown
> > 
> > Handle 0x0036, DMI type 28, 22 bytes
> > Temperature Probe
> >     Description: LM78A
> >     Location: Power Unit
> >     Status: OK
> >     Maximum Value: Unknown
> >     Minimum Value: Unknown
> >     Resolution: Unknown
> >     Tolerance: Unknown
> >     Accuracy: Unknown
> >     OEM-specific Information: 0x00000000
> >     Nominal Value: Unknown
> > 
> > Handle 0x0037, DMI type 27, 15 bytes
> > Cooling Device
> >     Temperature Probe Handle: 0x0036
> >     Type: Power Supply Fan
> >     Status: OK
> >     Cooling Unit Group: 1
> >     OEM-specific Information: 0x00000000
> >     Nominal Speed: Unknown Or Non-rotating
> >     Description: Cooling Dev 1
> > 
> > Handle 0x0038, DMI type 29, 22 bytes
> > Electrical Current Probe
> >     Description: ABC
> >     Location: Power Unit
> >     Status: OK
> >     Maximum Value: Unknown
> >     Minimum Value: Unknown
> >     Resolution: Unknown
> >     Tolerance: Unknown
> >     Accuracy: Unknown
> >     OEM-specific Information: 0x00000000
> >     Nominal Value: Unknown
> > 
> > Handle 0x0039, DMI type 39, 22 bytes
> > System Power Supply
> >     Power Unit Group: 1
> >     Location: To Be Filled By O.E.M.
> >     Name: To Be Filled By O.E.M.
> >     Manufacturer: To Be Filled By O.E.M.
> >     Serial Number: To Be Filled By O.E.M.
> >     Asset Tag: To Be Filled By O.E.M.
> >     Model Part Number: To Be Filled By O.E.M.
> >     Revision: To Be Filled By O.E.M.
> >     Max Power Capacity: Unknown
> >     Status: Present, OK
> >     Type: Switching
> >     Input Voltage Range Switching: Auto-switch
> >     Plugged: Yes
> >     Hot Replaceable: No
> >     Input Voltage Probe Handle: 0x0035
> >     Cooling Device Handle: 0x0037
> >     Input Current Probe Handle: 0x0038
> > 
> > Handle 0x003A, DMI type 41, 11 bytes
> > Onboard Device
> >     Reference Designation:  Onboard IGD
> >     Type: Video
> >     Status: Enabled
> >     Type Instance: 1
> >     Bus Address: 0000:00:02.0
> > 
> > Handle 0x003B, DMI type 41, 11 bytes
> > Onboard Device
> >     Reference Designation:  Onboard LAN
> >     Type: Ethernet
> >     Status: Enabled
> >     Type Instance: 1
> >     Bus Address: 0000:00:19.0
> > 
> > Handle 0x003C, DMI type 41, 11 bytes
> > Onboard Device
> >     Reference Designation:  Onboard 1394
> >     Type: Other
> >     Status: Enabled
> >     Type Instance: 1
> >     Bus Address: 0000:03:1c.2
> > 
> > Handle 0x003D, DMI type 4, 42 bytes
> > Processor Information
> >     Socket Designation: SOCKET 0
> >     Type: Central Processor
> >     Family: Core i7
> >     Manufacturer: Intel
> >     ID: C3 06 03 00 FF FB EB BF
> >     Signature: Type 0, Family 6, Model 60, Stepping 3
> >     Flags:
> >             FPU (Floating-point unit on-chip)
> >             VME (Virtual mode extension)
> >             DE (Debugging extension)
> >             PSE (Page size extension)
> >             TSC (Time stamp counter)
> >             MSR (Model specific registers)
> >             PAE (Physical address extension)
> >             MCE (Machine check exception)
> >             CX8 (CMPXCHG8 instruction supported)
> >             APIC (On-chip APIC hardware supported)
> >             SEP (Fast system call)
> >             MTRR (Memory type range registers)
> >             PGE (Page global enable)
> >             MCA (Machine check architecture)
> >             CMOV (Conditional move instruction supported)
> >             PAT (Page attribute table)
> >             PSE-36 (36-bit page size extension)
> >             CLFSH (CLFLUSH instruction supported)
> >             DS (Debug store)
> >             ACPI (ACPI supported)
> >             MMX (MMX technology supported)
> >             FXSR (FXSAVE and FXSTOR instructions supported)
> >             SSE (Streaming SIMD extensions)
> >             SSE2 (Streaming SIMD extensions 2)
> >             SS (Self-snoop)
> >             HTT (Multi-threading)
> >             TM (Thermal monitor supported)
> >             PBE (Pending break enabled)
> >     Version: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz
> >     Voltage: 1.2 V
> >     External Clock: 100 MHz
> >     Max Speed: 3800 MHz
> >     Current Speed: 3400 MHz
> >     Status: Populated, Enabled
> >     Upgrade: Socket BGA1155
> >     L1 Cache Handle: 0x003F
> >     L2 Cache Handle: 0x003E
> >     L3 Cache Handle: 0x0040
> >     Serial Number: Not Specified
> >     Asset Tag: Fill By OEM
> >     Part Number: Fill By OEM
> >     Core Count: 4
> >     Core Enabled: 4
> >     Thread Count: 8
> >     Characteristics:
> >             64-bit capable
> > 
> > Handle 0x003E, DMI type 7, 19 bytes
> > Cache Information
> >     Socket Designation: CPU Internal L2
> >     Configuration: Enabled, Not Socketed, Level 2
> >     Operational Mode: Write Back
> >     Location: Internal
> >     Installed Size: 1024 kB
> >     Maximum Size: 1024 kB
> >     Supported SRAM Types:
> >             Unknown
> >     Installed SRAM Type: Unknown
> >     Speed: Unknown
> >     Error Correction Type: Single-bit ECC
> >     System Type: Unified
> >     Associativity: 8-way Set-associative
> > 
> > Handle 0x003F, DMI type 7, 19 bytes
> > Cache Information
> >     Socket Designation: CPU Internal L1
> >     Configuration: Enabled, Not Socketed, Level 1
> >     Operational Mode: Write Back
> >     Location: Internal
> >     Installed Size: 256 kB
> >     Maximum Size: 256 kB
> >     Supported SRAM Types:
> >             Unknown
> >     Installed SRAM Type: Unknown
> >     Speed: Unknown
> >     Error Correction Type: Single-bit ECC
> >     System Type: Other
> >     Associativity: 8-way Set-associative
> > 
> > Handle 0x0040, DMI type 7, 19 bytes
> > Cache Information
> >     Socket Designation: CPU Internal L3
> >     Configuration: Enabled, Not Socketed, Level 3
> >     Operational Mode: Write Back
> >     Location: Internal
> >     Installed Size: 8192 kB
> >     Maximum Size: 8192 kB
> >     Supported SRAM Types:
> >             Unknown
> >     Installed SRAM Type: Unknown
> >     Speed: Unknown
> >     Error Correction Type: Single-bit ECC
> >     System Type: Unified
> >     Associativity: 16-way Set-associative
> > 
> > Handle 0x0041, DMI type 16, 23 bytes
> > Physical Memory Array
> >     Location: System Board Or Motherboard
> >     Use: System Memory
> >     Error Correction Type: None
> >     Maximum Capacity: 32 GB
> >     Error Information Handle: Not Provided
> >     Number Of Devices: 4
> > 
> > Handle 0x0042, DMI type 17, 40 bytes
> > Memory Device
> >     Array Handle: 0x0041
> >     Error Information Handle: Not Provided
> >     Total Width: Unknown
> >     Data Width: Unknown
> >     Size: No Module Installed
> >     Form Factor: DIMM
> >     Set: None
> >     Locator: ChannelA-DIMM0
> >     Bank Locator: BANK 0
> >     Type: Unknown
> >     Type Detail: None
> >     Speed: Unknown
> >     Manufacturer: [Empty]
> >     Serial Number: [Empty]
> >     Asset Tag: 9876543210
> >     Part Number: [Empty]
> >     Rank: Unknown
> >     Configured Clock Speed: Unknown
> >     Minimum voltage:  Unknown
> >     Maximum voltage:  Unknown
> >     Configured voltage:  Unknown
> > 
> > Handle 0x0043, DMI type 15, 73 bytes
> > System Event Log
> >     Area Length: 4096 bytes
> >     Header Start Offset: 0x0000
> >     Header Length: 16 bytes
> >     Data Start Offset: 0x0010
> >     Access Method: Memory-mapped physical 32-bit address
> >     Access Address: 0x000EF250
> >     Status: Valid, Not Full
> >     Change Token: 0x00000001
> >     Header Format: Type 1
> >     Supported Log Type Descriptors: 25
> >     Descriptor 1: Single-bit ECC memory error
> >     Data Format 1: None
> >     Descriptor 2: Multi-bit ECC memory error
> >     Data Format 2: None
> >     Descriptor 3: Parity memory error
> >     Data Format 3: None
> >     Descriptor 4: Bus timeout
> >     Data Format 4: None
> >     Descriptor 5: I/O channel block
> >     Data Format 5: None
> >     Descriptor 6: Software NMI
> >     Data Format 6: None
> >     Descriptor 7: POST memory resize
> >     Data Format 7: None
> >     Descriptor 8: POST error
> >     Data Format 8: POST results bitmap
> >     Descriptor 9: PCI parity error
> >     Data Format 9: None
> >     Descriptor 10: PCI system error
> >     Data Format 10: None
> >     Descriptor 11: CPU failure
> >     Data Format 11: None
> >     Descriptor 12: EISA failsafe timer timeout
> >     Data Format 12: None
> >     Descriptor 13: Correctable memory log disabled
> >     Data Format 13: None
> >     Descriptor 14: Logging disabled
> >     Data Format 14: None
> >     Descriptor 15: System limit exceeded
> >     Data Format 15: None
> >     Descriptor 16: Asynchronous hardware timer expired
> >     Data Format 16: None
> >     Descriptor 17: System configuration information
> >     Data Format 17: None
> >     Descriptor 18: Hard disk information
> >     Data Format 18: None
> >     Descriptor 19: System reconfigured
> >     Data Format 19: None
> >     Descriptor 20: Uncorrectable CPU-complex error
> >     Data Format 20: None
> >     Descriptor 21: Log area reset/cleared
> >     Data Format 21: None
> >     Descriptor 22: System boot
> >     Data Format 22: None
> >     Descriptor 23: End of log
> >     Data Format 23: None
> >     Descriptor 24: OEM-specific
> >     Data Format 24: OEM-specific
> >     Descriptor 25: OEM-specific
> >     Data Format 25: OEM-specific
> > 
> > Handle 0x0044, DMI type 17, 40 bytes
> > Memory Device
> >     Array Handle: 0x0041
> >     Error Information Handle: Not Provided
> >     Total Width: 64 bits
> >     Data Width: 64 bits
> >     Size: 8192 MB
> >     Form Factor: DIMM
> >     Set: None
> >     Locator: ChannelA-DIMM1
> >     Bank Locator: BANK 1
> >     Type: DDR3
> >     Type Detail: Synchronous
> >     Speed: 1600 MHz
> >     Manufacturer: Samsung
> >     Serial Number: 17C7415F
> >     Asset Tag: 9876543210
> >     Part Number: M378B1G73QH0-CK0  
> >     Rank: 2
> >     Configured Clock Speed: 1600 MHz
> >     Minimum voltage:  1.500 V
> >     Maximum voltage:  1.500 V
> >     Configured voltage:  1.500 V
> > 
> > Handle 0x0045, DMI type 20, 35 bytes
> > Memory Device Mapped Address
> >     Starting Address: 0x00000000000
> >     Ending Address: 0x001FFFFFFFF
> >     Range Size: 8 GB
> >     Physical Device Handle: 0x0044
> >     Memory Array Mapped Address Handle: 0x0049
> >     Partition Row Position: Unknown
> >     Interleave Position: 1
> >     Interleaved Data Depth: 2
> > 
> > Handle 0x0046, DMI type 17, 40 bytes
> > Memory Device
> >     Array Handle: 0x0041
> >     Error Information Handle: Not Provided
> >     Total Width: Unknown
> >     Data Width: Unknown
> >     Size: No Module Installed
> >     Form Factor: DIMM
> >     Set: None
> >     Locator: ChannelB-DIMM0
> >     Bank Locator: BANK 2
> >     Type: Unknown
> >     Type Detail: None
> >     Speed: Unknown
> >     Manufacturer: [Empty]
> >     Serial Number: [Empty]
> >     Asset Tag: 9876543210
> >     Part Number: [Empty]
> >     Rank: Unknown
> >     Configured Clock Speed: Unknown
> >     Minimum voltage:  Unknown
> >     Maximum voltage:  Unknown
> >     Configured voltage:  Unknown
> > 
> > Handle 0x0047, DMI type 17, 40 bytes
> > Memory Device
> >     Array Handle: 0x0041
> >     Error Information Handle: Not Provided
> >     Total Width: 64 bits
> >     Data Width: 64 bits
> >     Size: 8192 MB
> >     Form Factor: DIMM
> >     Set: None
> >     Locator: ChannelB-DIMM1
> >     Bank Locator: BANK 3
> >     Type: DDR3
> >     Type Detail: Synchronous
> >     Speed: 1600 MHz
> >     Manufacturer: Samsung
> >     Serial Number: 17C73CB4
> >     Asset Tag: 9876543210
> >     Part Number: M378B1G73QH0-CK0  
> >     Rank: 2
> >     Configured Clock Speed: 1600 MHz
> >     Minimum voltage:  1.500 V
> >     Maximum voltage:  1.500 V
> >     Configured voltage:  1.500 V
> > 
> > Handle 0x0048, DMI type 20, 35 bytes
> > Memory Device Mapped Address
> >     Starting Address: 0x00200000000
> >     Ending Address: 0x003FFFFFFFF
> >     Range Size: 8 GB
> >     Physical Device Handle: 0x0047
> >     Memory Array Mapped Address Handle: 0x0049
> >     Partition Row Position: Unknown
> >     Interleave Position: 2
> >     Interleaved Data Depth: 2
> > 
> > Handle 0x0049, DMI type 19, 31 bytes
> > Memory Array Mapped Address
> >     Starting Address: 0x00000000000
> >     Ending Address: 0x003FFFFFFFF
> >     Range Size: 16 GB
> >     Physical Array Handle: 0x0041
> >     Partition Width: 4
> > 
> > Handle 0x004D, DMI type 131, 22 bytes
> > OEM-specific Type
> >     Header and Data:
> >             83 16 4D 00 01 03 00 00 00 00 00 00 00 00 00 00
> >             00 00 00 00 80 01
> >     Strings:
> >             TVT-Enablement
> > 
> > Handle 0x004E, DMI type 136, 6 bytes
> > OEM-specific Type
> >     Header and Data:
> >             88 06 4E 00 00 00
> > 
> > Handle 0x004F, DMI type 140, 85 bytes
> > OEM-specific Type
> >     Header and Data:
> >             8C 55 4F 00 4C 45 4E 4F 56 4F 0B 00 01 57 AA 83
> >             75 D9 46 9D 5C 0C 0F 8A D3 41 A8 37 81 01 00 00
> >             00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> >             00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> >             00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> >             00 00 00 00 00
> > 
> > Handle 0x0050, DMI type 140, 47 bytes
> > OEM-specific Type
> >     Header and Data:
> >             8C 2F 50 00 4C 45 4E 4F 56 4F 0B 01 01 08 00 AF
> >             DF D1 79 CB 90 B9 6D A8 16 19 07 5E 54 2C 86 00
> >             00 00 00 10 00 10 00 10 01 D0 00 20 01 00 01
> > 
> > Handle 0x0051, DMI type 140, 63 bytes
> > OEM-specific Type
> >     Header and Data:
> >             8C 3F 51 00 4C 45 4E 4F 56 4F 0B 02 01 00 00 00
> >             00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> >             00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> >             00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> > 
> > Handle 0x0052, DMI type 140, 17 bytes
> > OEM-specific Type
> >     Header and Data:
> >             8C 11 52 00 4C 45 4E 4F 56 4F 0B 03 01 00 00 00
> >             00
> > 
> > Handle 0x0053, DMI type 140, 19 bytes
> > OEM-specific Type
> >     Header and Data:
> >             8C 13 53 00 4C 45 4E 4F 56 4F 0B 04 01 B2 00 4D
> >             53 20 00
> > 
> > Handle 0x0054, DMI type 134, 16 bytes
> > OEM-specific Type
> >     Header and Data:
> >             86 10 54 00 00 4A 10 00 00 4E 00 00 00 02 01 02
> >     Strings:
> >             TPM INFO
> >             System Reserved
> > 
> > Handle 0x0055, DMI type 10, 6 bytes
> > On Board Device Information
> >     Type: Other
> >     Status: Disabled
> >     Description: IBM Embedded Security Hardware Type 3
> > 
> > Handle 0x0056, DMI type 140, 19 bytes
> > OEM-specific Type
> >     Header and Data:
> >             8C 13 56 00 4C 45 4E 4F 56 4F 0B 05 01 02 00 00
> >             00 53 55
> > 
> > Handle 0x0057, DMI type 140, 23 bytes
> > OEM-specific Type
> >     Header and Data:
> >             8C 17 57 00 4C 45 4E 4F 56 4F 0B 06 01 00 00 00
> >             00 00 00 00 00 00 00
> > 
> > Handle 0x0058, DMI type 130, 20 bytes
> > OEM-specific Type
> >     Header and Data:
> >             82 14 58 00 24 41 4D 54 00 00 00 00 00 A5 8F 02
> >             01 00 00 00
> > 
> > Handle 0x0059, DMI type 131, 64 bytes
> > OEM-specific Type
> >     Header and Data:
> >             83 40 59 00 35 00 00 00 0A 00 00 00 00 00 04 00
> >             F8 00 4E 8C 00 00 00 00 09 E0 00 00 01 00 09 00
> >             60 04 00 00 00 00 00 00 C8 00 3A 15 00 00 00 00
> >             00 00 00 00 66 00 00 00 76 50 72 6F 00 00 00 00
> > 
> > Handle 0x005A, DMI type 13, 22 bytes
> > BIOS Language Information
> >     Language Description Format: Long
> >     Installable Languages: 3
> >             en|US|iso8859-1
> >             fr|FR|iso8859-1
> >             zh|CN|unicode
> >     Currently Installed Language: en|US|iso8859-1
> > 
> > Handle 0x005D, DMI type 127, 4 bytes
> > End Of Table
> > 
> > 
> > XEN dmesg:
> > 
> > Xen 4.6.0-unstable
> > (XEN) Xen version 4.6.0-unstable (root@) (gcc (Debian 4.9.1-19) 4.9.1) 
> > debug=y 
> > Thu Jan 22 05:41:00 EST 2015
> > (XEN) Latest ChangeSet: Fri Jan 16 04:59:02 2015 -0500 git:8ecc953
> > (XEN) Console output is synchronous.
> > (XEN) Bootloader: GRUB 2.02~beta2-15
> > (XEN) Command line: loglvl=all guest_loglvl=all dom0pvh=1 dom0_mem=max:2G 
> > sync_console com1=19200,8n1 console=com1 
> > iommu=debug,verbose,no-sharept,no-qinval,no-snoop apic_verbosity=debug
> > (XEN) Video information:
> > (XEN)  VGA is text mode 80x25, font 8x16
> > (XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
> > (XEN) Disc information:
> > (XEN)  Found 1 MBR signatures
> > (XEN)  Found 1 EDD information structures
> > (XEN) Xen-e820 RAM map:
> > (XEN)  0000000000000000 - 000000000009d800 (usable)
> > (XEN)  000000000009d800 - 00000000000a0000 (reserved)
> > (XEN)  00000000000e0000 - 0000000000100000 (reserved)
> > (XEN)  0000000000100000 - 00000000c27e0000 (usable)
> > (XEN)  00000000c27e0000 - 00000000c27e7000 (ACPI NVS)
> > (XEN)  00000000c27e7000 - 00000000c2c2f000 (usable)
> > (XEN)  00000000c2c2f000 - 00000000c30d6000 (reserved)
> > (XEN)  00000000c30d6000 - 00000000d48ea000 (usable)
> > (XEN)  00000000d48ea000 - 00000000d4976000 (reserved)
> > (XEN)  00000000d4976000 - 00000000d49d8000 (ACPI data)
> > (XEN)  00000000d49d8000 - 00000000d56f0000 (ACPI NVS)
> > (XEN)  00000000d56f0000 - 00000000d5fff000 (reserved)
> 
> So this is where one of the RMRRs sits in (and also where
> the faults occur according to the two numbers you sent
> earlier, which - as others have already said - is an indication
> of the reported RMRRs being incomplete), ...
> 
> > (XEN)  00000000d5fff000 - 00000000d6000000 (usable)
> > (XEN)  00000000d7000000 - 00000000df200000 (reserved)
> 
> ... and this is the exact range of the other one. But the usable
> entry between them is a sign of the firmware not doing the
> best job in assigning resources.
> 
> I don't, btw, think that blindly mapping all the reserved regions
> into PVH Dom0's P2M would be (or is, if that's what's happening
> today) correct - these regions are named reserved for a
> reason. In the case here it's actually RAM, not MMIO, and
> Dom0 (as well as Xen) has no business accessing these (for others
> this may be different, e.g. the LAPIC and IO-APIC ones below,
> but Xen learns/knows of them by means different from looking
> at the memory map).

I understand this this. At the same time I think pv dom0 does exactly
this blind mapping. I also tried to map these regions as read-only and
that worked. Can be this an option for these ram regions?

I also asked this question on usb-linux mailing list and received
similar to yours reply:
https://www.mail-archive.com/linux-usb@xxxxxxxxxxxxxxx/msg55128.html

> 
> > (XEN)  00000000f8000000 - 00000000fc000000 (reserved)
> > (XEN)  00000000fec00000 - 00000000fec01000 (reserved)
> > (XEN)  00000000fed00000 - 00000000fed04000 (reserved)
> > (XEN)  00000000fed1c000 - 00000000fed20000 (reserved)
> > (XEN)  00000000fee00000 - 00000000fee01000 (reserved)
> > (XEN)  00000000ff000000 - 0000000100000000 (reserved)
> > (XEN)  0000000100000000 - 000000041ee00000 (usable)
> 
> > (XEN) [VT-D]dmar.c:788: Host address width 39
> > (XEN) [VT-D]dmar.c:802: found ACPI_DMAR_DRHD:
> > (XEN) [VT-D]dmar.c:472:   dmaru->address = fed90000
> > (XEN) [VT-D]iommu.c:1136: drhd->address = fed90000 iommu->reg = 
> > ffff82c000201000
> > (XEN) [VT-D]iommu.c:1138: cap = c0000020660462 ecap = f0101a
> > (XEN) [VT-D]dmar.c:383:  endpoint: 0000:00:02.0
> > (XEN) [VT-D]dmar.c:802: found ACPI_DMAR_DRHD:
> > (XEN) [VT-D]dmar.c:472:   dmaru->address = fed91000
> > (XEN) [VT-D]iommu.c:1136: drhd->address = fed91000 iommu->reg = 
> > ffff82c000203000
> > (XEN) [VT-D]iommu.c:1138: cap = d2008020660462 ecap = f010da
> > (XEN) [VT-D]dmar.c:397:  IOAPIC: 0000:f0:1f.0
> > (XEN) [VT-D]dmar.c:361:  MSI HPET: 0000:f0:0f.0
> > (XEN) [VT-D]dmar.c:486:   flags: INCLUDE_ALL
> > (XEN) [VT-D]dmar.c:807: found ACPI_DMAR_RMRR:
> > (XEN) [VT-D]dmar.c:383:  endpoint: 0000:00:1d.0
> > (XEN) [VT-D]dmar.c:383:  endpoint: 0000:00:1a.0
> > (XEN) [VT-D]dmar.c:383:  endpoint: 0000:00:14.0
> > (XEN) [VT-D]dmar.c:676:   RMRR region: base_addr d5e6b000 end_address 
> > d5e91fff
> > (XEN) [VT-D]dmar.c:807: found ACPI_DMAR_RMRR:
> > (XEN) [VT-D]dmar.c:383:  endpoint: 0000:00:02.0
> > (XEN) [VT-D]dmar.c:676:   RMRR region: base_addr d7000000 end_address 
> > df1fffff
> 
> So there are at least some RMRRs here.
Yep, these seem to be fine and same on bare metal.
> 
> > (XEN) Bogus DMIBAR 0xfed18001 on 0000:00:00.0
> 
> Pretty clearly a firmware flaw.
> 
> > (XEN) traps.c:3216: GPF (0000): ffff82d0801e0716 -> ffff82d080235ef9
> > (XEN) traps.c:3216: GPF (0000): ffff82d0801e0716 -> ffff82d080235ef9
> > (XEN) traps.c:3216: GPF (0000): ffff82d0801e0716 -> ffff82d080235ef9
> > (XEN) traps.c:3216: GPF (0000): ffff82d0801e0716 -> ffff82d080235ef9
> > 
> > I am not sure about last lines here, I have not seen it before and leaving 
> > it as it is. 
> 
> These should at least be investigated.

yes, I am looking at these, something new.`
> 
> But - this being the end of the log: Where are the IOMMU faults
> you say you see? Without those, it's unclear which of the devices
> cause(s) them, and hence the lspci output isn't useful.

I did miss it. Here it is:


(XEN) [VT-D]iommu.c:744: iommu_enable_translation: iommu->reg = ffff82c000201000
(XEN) Enabled translation IOMMU 
(XEN) [VT-D]iommu.c:744: iommu_enable_translation: iommu->reg = ffff82c000203000
(XEN) Enabled translation IOMMU 
(XEN) Scrubbing Free RAM on 1 nodes using 4 CPUs
(XEN) [VT-D]iommu.c:875: iommu_fault_status: Fault Overflow
(XEN) [VT-D]iommu.c:877: iommu_fault_status: Primary Pending Fault
(XEN) [VT-D]iommu.c:855: DMAR:[DMA Read] Request device [0000:00:1a.0] fault 
addr d5d46000, iommu reg = ffff82c000203000
(XEN) DMAR:[fault reason 06h] PTE Read access is not set
(XEN) print_vtd_entries: iommu ffff83041ac0c9b0 dev 0000:00:1a.0 gmfn d5d46
(XEN)     root_entry = ffff83041ac07000
(XEN)     root_entry[0] = 291cc8001
(XEN)     context = ffff830291cc8000
(XEN)     context[d0] = 2_2920d2001
(XEN)     l4 = ffff8302920d2000
(XEN)     l4_index = 0
(XEN)     l4[0] = 2920d1003
(XEN)     l3 = ffff8302920d1000
(XEN)     l3_index = 3
(XEN)     l3[3] = 291cc7003
(XEN)     l2 = ffff830291cc7000
(XEN)     l2_index = ae
(XEN)     l2[ae] = 0
(XEN)     l2[ae] not present
 
...

[  641.390790] pci 0000:00:14.0: CONFIG_USB_XHCI_HCD is turned off, defaulting 
to EHCI.^M^M
[  641.437566] pci 0000:00:14.0: USB 3.0 devices will work at USB 2.0 
speeds.^M^M

mmu.c:875: iommu_fault_status: Fault Overflow
(XEN) [VT-D]iommu.c:877: iommu_fault_status: Primary Pending Fault
(XEN) [VT-D]iommu.c:855: DMAR:[DMA Read] Request device [0000:00:1d.0] fault 
addr d5d45000, iommu reg = ffff82c000203000
(XEN) DMAR:[fault reason 06h] PTE Read access is not set
(XEN) print_vtd_entries: iommu ffff83041ac0c9b0 dev 0000:00:1d.0 gmfn d5d45
(XEN)     root_entry = ffff83041ac07000
(XEN)     root_entry[0] = 291cc9001
(XEN)     context = ffff830291cc9000
(XEN)     context[e8] = 2_2920d3001
(XEN)     l4 = ffff8302920d3000
(XEN)     l4_index = 0
(XEN)     l4[0] = 2920d2003
(XEN)     l3 = ffff8302920d2000
(XEN)     l3_index = 3
(XEN)     l3[3] = 291cc8003
(XEN)     l2 = ffff830291cc8000
(XEN)     l2_index = ae
(XEN)     l2[ae] = 0
(XEN)     l2[ae] not present


> 
> Jan

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel


 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.