Re: Report in downstream Debian: mpt3sas broken with xen dom0 with update to 5.10.149 in 5.10.y.

[Andrew Cooper]

On 14/03/2023 11:23 am, Juergen Gross wrote:
> On 14.03.23 12:17, Joost Roeleveld wrote:
>>> On Mon, Oct 24, 2022 at 05:28:05PM +0000, Andrew Cooper wrote:
>>>> I don't know exactly how this translates to Linux internals, but most
>>>> devices are fine and it's routinely the mpt2/3sas drivers which
>>>> encounter problems.  It would be lovely if we could get to the
>>>> bottom of
>>>> this for once and for all.
>>>
>>> So to summarize my two mails: I think te use of dma_get_required_mask
>>> in mpt3sas is wrong, and the dma_get_required_mask return value from
>>> xen-swiotlb is also wrong. Fixing either one should fix this problem,
>>> and I think we should fix both.
>>
>> Hi all,
>>
>> Is there anything that can be done to get this fixed in xen and the
>> kernel somehow?
>> I keep having to manually patch the mpt3sas driver to prevent it from
>> being able to switch to 32bit mode each time I upgrade the kernel.
>
> Just use 5.10.173.

Its still broken even in 6.1

We've just stumbled over this yet again in XenServer.

~Andrew