Redhat 9 removes RXE (SoftROCE) support

Redhat 9 removes RXE (SoftROCE) support

[Christoph Lameter]

I was surprised to find that RHEL 9 removes ROCE support after it was a
"tech preview" in Redhat 8. Its a good feature with many use cases here
and there for development, testing and production issues.

Any idea why Redhat would not support RXE? Could we get a campaign going
to convince Redhat to include RXE?


From:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9-beta/pdf/considerations_in_adopting_rhel_9/red_hat_enterprise_linux-9-beta-considerations_in_adopting_rhel_9-en-us.pdf


11.2. REMOVED HARDWARE SUPPORT

This section lists devices (drivers, adapters) that have been removed from RHEL 9.
PCI device IDs are in the format of vendor:device:subvendor:subdevice. If no device ID is listed, all
devices associated with the corresponding driver are unmaintained. To  check the PCI IDs of the
hardware on your system, run the lspci -nn command.

Device ID Driver Device name
Soft-RoCE (rdma_rxe)
HNS-RoCE HNS GE/10GE/25GE/50GE/100GE RDMA Network
Contro

Re: Redhat 9 removes RXE (SoftROCE) support

[Zhu Yanjun]

On Thu, May 19, 2022 at 7:24 AM Doug Ledford <dledford@redhat.com> wrote:
>
> We had too many issues with it in the past.  It might be getting better, I haven't been watching closely, but it had issues before.

Yes. Recently several patch series are merged into SoftRoCE. We will
do more work to make it better.

Zhu Yanjun

>
> On Fri, May 13, 2022 at 9:51 AM Christoph Lameter <cl@gentwo.de> wrote:
>>
>> I was surprised to find that RHEL 9 removes ROCE support after it was a
>> "tech preview" in Redhat 8. Its a good feature with many use cases here
>> and there for development, testing and production issues.
>>
>> Any idea why Redhat would not support RXE? Could we get a campaign going
>> to convince Redhat to include RXE?
>>
>>
>> From:
>> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9-beta/pdf/considerations_in_adopting_rhel_9/red_hat_enterprise_linux-9-beta-considerations_in_adopting_rhel_9-en-us.pdf
>>
>>
>> 11.2. REMOVED HARDWARE SUPPORT
>>
>> This section lists devices (drivers, adapters) that have been removed from RHEL 9.
>> PCI device IDs are in the format of vendor:device:subvendor:subdevice. If no device ID is listed, all
>> devices associated with the corresponding driver are unmaintained. To  check the PCI IDs of the
>> hardware on your system, run the lspci -nn command.
>>
>> Device ID Driver Device name
>> Soft-RoCE (rdma_rxe)
>> HNS-RoCE HNS GE/10GE/25GE/50GE/100GE RDMA Network
>> Contro
>>
>
>
> --
> Doug Ledford <dledford@redhat.com>
> GPG KeyID: B826A3330E572FDD
> Key fingerprint = AE6B 1BDA 122B 23B4 265B  1274 B826 A333 0E57 2FDD

Re: Redhat 9 removes RXE (SoftROCE) support

[Haris Iqbal]

On Fri, May 13, 2022 at 3:50 PM Christoph Lameter <cl@gentwo.de> wrote:
>
> I was surprised to find that RHEL 9 removes ROCE support after it was a
> "tech preview" in Redhat 8. Its a good feature with many use cases here
> and there for development, testing and production issues.
>
> Any idea why Redhat would not support RXE? Could we get a campaign going
> to convince Redhat to include RXE?

Yes. We use RXE for testing/development in VMs.

>
>
> From:
> https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9-beta/pdf/considerations_in_adopting_rhel_9/red_hat_enterprise_linux-9-beta-considerations_in_adopting_rhel_9-en-us.pdf
>
>
> 11.2. REMOVED HARDWARE SUPPORT
>
> This section lists devices (drivers, adapters) that have been removed from RHEL 9.
> PCI device IDs are in the format of vendor:device:subvendor:subdevice. If no device ID is listed, all
> devices associated with the corresponding driver are unmaintained. To  check the PCI IDs of the
> hardware on your system, run the lspci -nn command.
>
> Device ID Driver Device name
> Soft-RoCE (rdma_rxe)
> HNS-RoCE HNS GE/10GE/25GE/50GE/100GE RDMA Network
> Contro

Re: Redhat 9 removes RXE (SoftROCE) support

[Christoph Lameter]

On Wed, 18 May 2022, Doug Ledford wrote:

> We had too many issues with it in the past.  It might be getting better, I
> haven't been watching closely, but it had issues before.

We have been using it without issues in  Redhat 7 but now in Redhat 8 its gone.