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TeddyAstie

Xen Project covered this as XSA-489.

dinhngtu

Hello all,

XenClean 9.1.148 Prerelease is now available with a fix for error 1605 during execution.

This is a XenClean-only prerelease.

https://github.com/xcp-ng/win-pv-drivers/releases/tag/v9.1.148

dinhngtu

Thanks for the report. This is a known issue and will be fixed in the next full release.
In the meantime, I've released an interim XenClean 9.1.148 that will resolve this issue.

https://github.com/xcp-ng/win-pv-drivers/releases/tag/v9.1.148

yannsionneau

@timemaster5 To give you more feedback, I am currently testing with an AMD Ryzen Embedded V2748 with Radeon Graphics host with a Renoir [Radeon Vega Series / Radeon Vega Mobile Series] iGPU.
I'm also talking to XAPI team to coordinate the effort and try to see what we can/want to do about this.
My first effort is to confirm what works/does not work and give all the information they need to the XAPI team so that they can make the decision on what to do.
I'll update you with my findings.

yannsionneau

Can you retry with an up-to-date xcp-ng 8.3 please?

FYI on recent XCP-ng 8.3 versions the pci-passthrough will enable the ROM expansion bar. The guest VM will have access to it, so no need to pass it via qemu anymore.
See my comment on GitHub: https://github.com/xcp-ng/xcp/issues/786#issuecomment-4281846490

Regards,

Yann

timemaster5 created this issue in xcp-ng/xcp

open PCI ROM BAR not exposed to guest when using xen-pci-passthrough #786

yannsionneau

@gleveque Hello

Can you retry with an up-to-date XCP-ng 8.3 host?
PCI expansion ROM are now enabled when doing pass-through.
The guest VM can now access the ROM bar.

Regards,

Yann

yannsionneau

FYI this is not being forgotten, we still have a card about this assigned to someone, it will just take a bit more time than I thought before we work on this.
I'll send updates here when we have new elements.
Regards,
Yann

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open PCI ROM BAR not exposed to guest when using xen-pci-passthrough #786

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