kernel-4.18.0-553.71.1.0.1.el8_10 (OL8) and kernel-5.14.0-570.37.1.0.1.el9_6 (OL9) do not contain the fix. kernel-6.12.0-55.29.1.0.1.el10_0 (OL10) does.
Xen Guru
Private
Posts
-
RE: Epyc VM to VM networking slow
-
RE: Passthrough Contention Problems with Console and Linux VM
@chicagomed said in Passthrough Contention Problems with Console and Linux VM:
@TeddyAstie great will take a look this weekend. Is there anything in particular you want us to test / check out?
What works/doesn't work and overall performance.
-
RE: Passthrough Contention Problems with Console and Linux VM
@DustinB said in Passthrough Contention Problems with Console and Linux VM:
@olivierlambert yes please
It's something we're still evaluating, and there are known bugs (including some for unknown reasons).
There are still rough edges, not everything works perfectly; but it's somewhat there.What works (tested) :
- UEFI guests (OVMF knows how to drive virtio-gpu devices)
- Linux operating systems with virtio-gpu drivers
- High resolutions
What doesn't work :
- VGA compatibility mode doesn't work properly
- BIOS guests have no display at least at the beginning
- operating systems without virtio-gpu drivers may or may not work properly (e.g Windows without appropriate drivers), but that still wants to be tested
- cursor integration is a bit limited in Xen Orchestra (may not match guest cursor icon); but at least you don't see duplicate cursors
To test it (not production ready)
# Download repo file for XCP-ng 8.3 wget https://koji.xcp-ng.org/repos/user/8/8.3/xcpng-users.repo -O /etc/yum.repos.d/xcpng-users.repo yum update --enablerepo=xcp-ng-tae1you should see virtiovga packages for QEMU and Xapi.
Then, you set virtio-vga for your VM.
xe vm-param-set uuid=GUEST_UUID platform:vga=virtio(or vm-param-add depending on whether or not the parameter has been set previously)
Regarding Windows support; KVM VirtIO drivers provides a "virito-gpu DoD" which should work (tested with upstream Xen, but not yet with XCP-ng).
-
RE: PCI device doesn't show in XO or xe pci-list
@chicagomed If
lspcishows the PCI device in its output we probably need to check if XAPI layer "sees" all this devices and correctly reports them to XO. Ping @Team-XAPI-Network -
RE: NVMe SSD not found when installing
Hello,
Make sure Intel VMD is disabled (this is the hardware RAID feature of Intel, and it doesn't currently work on XCP-ng; you probably don't need it unless you are looking to make a RAID). We found some modern platforms enabling by default (which also causes issues with Windows).
-
RE: 🚨 AI on XCP‑ng 8.3: Not Ready for Prime Time? FlashAttention/ROCm Passthrough Stalls vs Proxmox & Bare‑Metal
@emuchogu-0 said in
AI on XCP‑ng 8.3: Not Ready for Prime Time? FlashAttention/ROCm Passthrough Stalls vs Proxmox & Bare‑Metal:xl dmesg (dom0) and dom0 dmesg
Guest dmesg filtered for amdgpu, rocm, hsa, xnack, pasid, iommu, fault messages
Guest lspci -vv for the GPU (MSI/MSI-X state, BARs)
rocminfo from the guest
Minimal reproducer scripts for llama.cpp and ollama (FlashAttention on/off)You need to provide this information; we can't blind guess where something is failing.
-
RE: RealTimeIsUniversal - Windows VM - PV driver does not work
Fix committed upstream.
-
RE: [HELP] XCP-ng 4.17.5 dom0 kernel panic — page fault in TCP stack, crashdump attached
@dnikola Intel, Family 6 Model 183, that's a 14th gen desktop chip right? 16 cores and Z690 gives me pause, there's the instability issue that this generation has esp. with unlocked chips. Do you run any overclocking? (beware of some gaming BIOSes that overclock by default)
