Re: PCI pass-through problem for SN570 NVME SSD

["G.R." <firemeteor@xxxxxxxxxxxxxxxxxxxxx>]

On Mon, Jul 4, 2022 at 9:09 PM Roger Pau Monné <roger.pau@xxxxxxxxxx> wrote:
> >
> > 05:00.0 Non-Volatile memory controller: Sandisk Corp Device 501a (prog-if 
> > 02 [NVM Express])
> >       Subsystem: Sandisk Corp Device 501a
> >       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 16
> >       NUMA node: 0
> >       IOMMU group: 13
> >       Region 0: Memory at a2600000 (64-bit, non-prefetchable) [size=16K]
> >       Region 4: Memory at a2604000 (64-bit, non-prefetchable) [size=256]
>
> I think I'm slightly confused, the overlapping happens at:
>
> (XEN) d1: GFN 0xf3078 (0xa2616,0,5,7) -> (0xa2504,0,5,7) not permitted
>
> So it's MFNs 0xa2616 and 0xa2504, yet none of those are in the BAR
> ranges of this device.
>
> Can you paste the lspci -vvv output for any other device you are also
> passing through to this guest?
>

I just realized that the address may change in different environments.
In previous email chains, I used a cached dump from a Linux
environment running outside the hypervisor.
Sorry for the confusion. Refreshing with a XEN dom0 dump.

The other device I used is a SATA controller. I think I can get what
you are looking for now.
Both a2616 and a2504 are found!

00:17.0 SATA controller: Intel Corporation Cannon Lake PCH SATA AHCI
Controller (rev 10) (prog-if 01 [AHCI 1.0])
        DeviceName: Onboard - SATA
        Subsystem: Gigabyte Technology Co., Ltd Cannon Lake PCH SATA
AHCI Controller
        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 A routed to IRQ 16
        Region 0: Memory at a2610000 (32-bit, non-prefetchable) [size=8K]
        Region 1: Memory at a2616000 (32-bit, non-prefetchable) [size=256]
        Region 2: I/O ports at 4090 [size=8]
        Region 3: I/O ports at 4080 [size=4]
        Region 4: I/O ports at 4060 [size=32]

05:00.0 Non-Volatile memory controller: Sandisk Corp Device 501a
(prog-if 02 [NVM Express])
        Subsystem: Sandisk Corp Device 501a
        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 11
        Region 0: Memory at a2500000 (64-bit, non-prefetchable) [size=16K]
        Region 4: Memory at a2504000 (64-bit, non-prefetchable) [size=256]

Thanks,
G.R.



> Thanks, Roger.

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