Re: ivhd0 IO_PAGE_FAULT EVT with external disk

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On Fri, 30 Jul 2021, Bjoern A. Zeeb wrote:

> On Fri, 30 Jul 2021, Peter Grehan wrote:
>
>>> I grabbed an external USB drive from an Intel machine and put it to an AMD 
>>> host
>>> using it to boot directly from it like:
>>>          -s 3,ahci-hd,/dev/da0,sectorsize=512 \
>> ...
>> 
>>> On the AMD machine this doesn't work and I get a lot of:
>>> 
>>> ivhd0: EVT INTR 45 Status:0x1a EVT Head:0xfb0 Tail:0x430]^M
>>>    [CMD Total 0xaf] Tail:0xaf0, Head:0xaf0.^M
>> ...
>>> Is this in theory supposed to work?
>> 
>> Yes.
>
> Good.
>
>
>>> Does this in any way depend on the USB
>>> port used or are we simply working on the device node?
>> 
>> bhyve only uses the device node.
>
> Also good.
>
>
>> Do you have passthru devices configured ? If so, are they under the same 
>> controller that the USB device is on ?
>
> I do.
> And they did work fine without the raw disk (netbooting FreeBSD).
> If I remove the passthru devices the Linux on the disk boots.

Actually, I as too early given it went through grub and was saying:
Loading Linux 5.10.40 ...
Loading initial ramdisk ...

Then bhyve died with:
 	vm_run error -1, errno 14

but no other information in dmesg or console or from bhyve.  I assume
that is two issues now...


> nexus0
>  cryptosoft0
>  aesni0
>  smbios0
>  ram0
>  apic0
>  vtvga0
>  acpi0
>    cpu0
>      hwpstate0
>      acpi_perf0
>      cpufreq0
>    cpu1
>      acpi_perf1
>    cpu2
>      acpi_perf2
>    cpu3
>      acpi_perf3
>    acpi_button0
>    pcib0
>      pci0
>        hostb0
>        amdiommu0
>        hostb1
>        pcib1
>          pci1
>            ppt0
>        pcib2
>          pci2
>            igb0
>        pcib3
>          pci3
>            ppt1
>        pcib4
>          pci4
>            ppt2
>        pcib5
>          pci5
>            ppt3
>        xhci0
>          usbus0
>            uhub1
>              umass0
>        ahci0
>          ahcich0
>          ahcich1
>        ehci0
>          usbus1
>            uhub0
>              uhub2
>        isab0
>          isa0
>            orm0
>            superio0
>              wbwd0
>        sdhci_pci0
>        hostb2
>        hostb3
>        hostb4
>        hostb5
>        hostb6
>        hostb7
>    acpi_tz0
> ...
>
>
>> (also what version of FreeBSD on the host)
>
> HEAD as of a few days or weeks ago.
>
>

-- 
Bjoern A. Zeeb                                                     r15:7
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