Dear Mykyta, Thank you so much for your reply. The information you provided is extremely useful to me.
I will test the PCI passthrough function according to the WIP branches. I will also promptly provide feedback on related issues. I hope that this can offer some help in the development of the PCI passthrough function. Best regards, Shenghui Qu Mykyta Poturai <mykyta_potu...@epam.com> 于2025年2月20日周四 16:19写道： > Hi Shenghui, > I have somewhat taken over the upstreaming effort for now, here is our > plan: > - 2025 Q1 > 1. Send "xen/arm: platform: Add support for R-Car Gen4" - Done > 2. Revive "SMMU handling for PCIe Passthrough on ARM" - Done > 3. Send "Add support for R-Car Gen4 PCIE Host" > 4. Revive "PCI devices passthrough on Arm, part 3" > - 2025 Q2 > 1. Send "IPMMU handling for PCIe Passthrough" > 2. Send "Enable the existing MSI-X and MSI handlers support for > ARM" > 3. Revive "Kconfig for PCI passthrough on ARM" > 4. Send "PCI devices passthrough on Arm, part 4(pci scan support)" > > Please note that most Q2 patches depend on Q1 patches in some way, so it > may require waiting some more time if the review process takes a long time. > > There are downstream WIP branches > https://github.com/Deedone/xen/tree/pci_passthrough_wip (based on > 4.20-rc3), > > https://gitlab.com/xen-project/people/bmarquis/xen-arm-poc/-/commits/poc/pci-passthrough > (based on 4.17-unstable) that currently have PCI passthrough working on > Arm, but on upstream it is not yet functional. There is also work done > on moving PCI host from hardware domain to a separate driver domain, but > it is very WIP and not yet ready to be upstreamed. > > -- > Mykyta > > On 14.02.25 12:55, shenghui qu wrote: > > Dear Stewart > > > > Thank you for being looped into this discussion. > > Following Stefano’s guidance, I’d like to seek further clarity on the > > current development of PCI Passthrough support for Xen/ARM. > > Specifically, I have two questions: > > 1.Roadmap: Are there clear milestones or a timeline for completing PCI > > Passthrough support on ARM? For instance, is this feature targeted for > > inclusion in Xen 4.20 or later releases？ > > 2.Current Status: Could you elaborate on the technical progress so far? > > > > Looking forward to your insights. > > > > Best regards, > > Shenghui Qu > > > > Stefano Stabellini <sstabell...@kernel.org > > <mailto:sstabell...@kernel.org>> 于2025年2月14日周五 04:14写道： > > > > Hi Shenghui, > > > > Thank you for your interest in Xen! Let me add Stewart, who can > provide > > you with an overview of the latest status of PCI Passthrough on ARM. > > > > Among the various items in progress, I would like to highlight this > > series from Mykyta, which is currently under review: > > > > https://marc.info/?l=xen-devel&m=173918318831281 > > > > Cheers, > > > > Stefano > > > > On Thu, 13 Feb 2025, shenghui qu wrote: > > > Dear Maintainers, > > > > > > I hope this email finds you well. > > > > > > I recently came across the Xen Project 4.19 Feature List, which > > mentions that PCI passthrough work on ARM is ongoing, including some > > > refactoring and improvements of the existing code. It also states > > that this work will be included in the next few releases. > > > I am very interested in the current development plan and progress > > of PCI passthrough on ARM. Could you kindly provide an update on > this? > > > > > > Additionally, I would like to know how I can access any available > > testing patches related to this work. > > > > > > I appreciate your time and effort in maintaining and improving > > the Xen Project. Looking forward to your response. > > > > > > Best regards,Shenghui Qu > > > > > > >
