Hello Debian Kernel Team,
I'm the Community Manager for the Xen Project. I'm writing on behalf of the Xen Project community regarding a Linux kernel patch that improves virtual-machine performance on AMD EPYC systems running Xen or KVM (with Xen emulation).
The patch addresses a communication-performance issue between VMs on the same host. A workaround already exists downstream, but inclusion in Debian 11’s 5.10 kernel would ensure stable performance without manual adjustments. Greg KH declined to backport the series to 5.10 stable as it’s a performance improvement rather than a bug fix, but it has proven reliable in testing.
Patch reference:
- Mainline patch by Juergen Gross (SUSE)
or its backport:
- Backport by Teddy Astie (Vates)
Would you consider integrating this patch into Debian 11’s kernel?
Please let us know if you prefer that we open a bug for tracking.
I'm the Community Manager for the Xen Project. I'm writing on behalf of the Xen Project community regarding a Linux kernel patch that improves virtual-machine performance on AMD EPYC systems running Xen or KVM (with Xen emulation).
The patch addresses a communication-performance issue between VMs on the same host. A workaround already exists downstream, but inclusion in Debian 11’s 5.10 kernel would ensure stable performance without manual adjustments. Greg KH declined to backport the series to 5.10 stable as it’s a performance improvement rather than a bug fix, but it has proven reliable in testing.
Patch reference:
- Mainline patch by Juergen Gross (SUSE)
or its backport:
- Backport by Teddy Astie (Vates)
Would you consider integrating this patch into Debian 11’s kernel?
Please let us know if you prefer that we open a bug for tracking.
Very best regards,
Cody Zuschlag
Xen Project - Community Manager