Upstream Support for LoongArch

Upstream Support for LoongArch

[Kaiyang Wu]

Hello Proxmox maintainers,

We are currently bootstrapping and maintaining an unofficial LoongArch 
(Debian: loong64) port based on Debian 13 Trixie from the Loong13 
project (https://loong13.debian.net/). We are currently tracking the 
required patches to build packages on LoongArch at 
https://github.com/orgs/pve-loong64-port/repositories.

LoongArch is a new RISC ISA developed by Loongson Technology. The 
Loongson 3 family supports virtualization via the LVZ extension, and 
while the Loongson 2 family of SoCs do not support virtualization, they 
are capable of running containerized applications via LXC. The 
performance of the latest mainstream server processor, Loongson 
3C6000/S, is about equivalent to an AMD Ryzen 7 5700 and, the latest 
Loongson 2 SoC, 2K3000, is about equivalent to an Intel N95. This means 
that Loongson's mainstream processors are capable of hosting Proxmox VE 
instances.

There is an existing unofficial port of Proxmox VE 9.0 to LoongArch 
maintained by Lierfang (https://github.com/jiangcuo/pxvirt). While we 
recognize their effort on maintaining the port, the repository has not 
been actively maintained for 8 months. We do not plan on using their 
patchset and will maintain our own in order to align them for upstreaming.

We would like to seek chances to support LoongArch officially by Proxmox 
in the future. Loongson Hobbyists Community (https://loongfans.cn/en/) 
will provide long term support for the LoongArch port. If needed, we 
will be able to supply LoongArch devices for testing. To support the 
upstream work, we would like to know about the current workflow for 
managing patches, maintenance, and testing process. We are happy to 
answer any of your questions or comments.

We originally intended to send this E-Mail from wukaiyang@loongfans.cn, 
but we were unable to subscribe to the mailing list, as the mailing list 
server rejected our mailing addresses with the error message: Recipient 
address rejected: Service is unavailable (try later).

Best,
Kaiyang Wu

Re: Upstream Support for LoongArch

[Thomas Lamprecht]

Hello,

Am 25.05.26 um 05:17 schrieb Kaiyang Wu:
> LoongArch is a new RISC ISA developed by Loongson Technology. The Loongson 3 family supports virtualization via the LVZ extension, and while the Loongson 2 family of SoCs do not support virtualization, they are capable of running containerized applications via LXC. The performance of the latest mainstream server processor, Loongson 3C6000/S, is about equivalent to an AMD Ryzen 7 5700 and, the latest Loongson 2 SoC, 2K3000, is about equivalent to an Intel N95. This means that Loongson's mainstream processors are capable of hosting Proxmox VE instances.

Interesting, I could only find these benchmarks [0] which are relatively recent.
It doesn't shows that great performance, albeit it's probably not the best available HW the best/newest HW.
FWIW, for us having recent and good server-class HW available globally is a key requirement before we can consider any official support.
And here I don't just mean that you can send us some (test) system or the like, but that some - e.g. European - vendors provide this relatively hassle free, as then we and our end users here can buy it.

[0]: https://www.phoronix.com/review/loongson-3b6000-loongarch

> There is an existing unofficial port of Proxmox VE 9.0 to LoongArch maintained by Lierfang (https://github.com/jiangcuo/pxvirt). While we recognize their effort on maintaining the port, the repository has not been actively maintained for 8 months. We do not plan on using their patchset and will maintain our own in order to align them for upstreaming.
> 
> We would like to seek chances to support LoongArch officially by Proxmox in the future. Loongson Hobbyists Community (https://loongfans.cn/en/) will provide long term support for the LoongArch port. If needed, we will be able to supply LoongArch devices for testing. To support the upstream work, we would like to know about the current workflow for managing patches, maintenance, and testing process. We are happy to answer any of your questions or comments.

LoongArch does seem interesting and made great steps to become a powerful architecture.
We will definitively keep an eye out and revisit it in the Future, that said, for now we do not plan to actively work on an official version from our side.
I think the next best time to revisit this topic might be in about a year and a few months, then the next major release should be released, and with that also ideally the support status in upstream Debian better - which would help a lot - and maybe even some newer HW available.

Thanks again for your interest, if there are contained patches for improving multi-arch support that helps your downstream port, we are happy to check them out and if non-invasive will also apply them already.

best regards,
 Thomas

SPAM: Re: Upstream Support for LoongArch

[Kaiyang Wu]

Hi Thomas,

We are glad to see your interest in the architecture.

While we currently do not have any European vendors, we are able to 
supply Loongson hardware in reasonably efficient manner, see:

https://loongfans.cn/en/intro#i-m-sold-where-can-i-buy-one

But yes, we are indeed working on supporting more overseas vendors for 
LoongArch hardware. In the mean time, We will continuously maintain the 
unofficial port and align it to the upstream maintenance guidelines and 
idioms. Thank you for the feedback!

Best,
Kaiyang Wu

Thomas Lamprecht 於 2026/5/26 17:12 寫道:
> Hello,
> 
> Am 25.05.26 um 05:17 schrieb Kaiyang Wu:
>> LoongArch is a new RISC ISA developed by Loongson Technology. The Loongson 3 family supports virtualization via the LVZ extension, and while the Loongson 2 family of SoCs do not support virtualization, they are capable of running containerized applications via LXC. The performance of the latest mainstream server processor, Loongson 3C6000/S, is about equivalent to an AMD Ryzen 7 5700 and, the latest Loongson 2 SoC, 2K3000, is about equivalent to an Intel N95. This means that Loongson's mainstream processors are capable of hosting Proxmox VE instances.
> 
> Interesting, I could only find these benchmarks [0] which are relatively recent.
> It doesn't shows that great performance, albeit it's probably not the best available HW the best/newest HW.
> FWIW, for us having recent and good server-class HW available globally is a key requirement before we can consider any official support.
> And here I don't just mean that you can send us some (test) system or the like, but that some - e.g. European - vendors provide this relatively hassle free, as then we and our end users here can buy it.
> 
> [0]: https://www.phoronix.com/review/loongson-3b6000-loongarch
> 
>> There is an existing unofficial port of Proxmox VE 9.0 to LoongArch maintained by Lierfang (https://github.com/jiangcuo/pxvirt). While we recognize their effort on maintaining the port, the repository has not been actively maintained for 8 months. We do not plan on using their patchset and will maintain our own in order to align them for upstreaming.
>>
>> We would like to seek chances to support LoongArch officially by Proxmox in the future. Loongson Hobbyists Community (https://loongfans.cn/en/) will provide long term support for the LoongArch port. If needed, we will be able to supply LoongArch devices for testing. To support the upstream work, we would like to know about the current workflow for managing patches, maintenance, and testing process. We are happy to answer any of your questions or comments.
> 
> LoongArch does seem interesting and made great steps to become a powerful architecture.
> We will definitively keep an eye out and revisit it in the Future, that said, for now we do not plan to actively work on an official version from our side.
> I think the next best time to revisit this topic might be in about a year and a few months, then the next major release should be released, and with that also ideally the support status in upstream Debian better - which would help a lot - and maybe even some newer HW available.
> 
> Thanks again for your interest, if there are contained patches for improving multi-arch support that helps your downstream port, we are happy to check them out and if non-invasive will also apply them already.
> 
> best regards,
>   Thomas
>