Bug#850425: mpt3sas "swiotlb buffer is full" problem only under Xen

From	Juergen Gross <jgross@suse.com>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#850425: mpt3sas "swiotlb buffer is full" problem only under Xen
Date	2019-03-12 20:30 +0100
Message-ID	<xAVg5-1qY-5@gated-at.bofh.it> (permalink)
References	(3 earlier) <xAS8y-7XT-9@gated-at.bofh.it> <xAS8y-7XT-7@gated-at.bofh.it> <xAVg5-1qY-7@gated-at.bofh.it> <sWB2h-1hn-5@gated-at.bofh.it> <xAVg5-1qY-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On 12/03/2019 17:41, Hans van Kranenburg wrote:
> On 3/12/19 5:04 PM, Juergen Gross wrote:
>> On 11/03/2019 20:50, Hans van Kranenburg wrote:
>>> On 3/11/19 7:34 AM, Juergen Gross wrote:
>>>>
>>>> I'm not sure. Patch 3 of this series is basically already there (see
>>>> commit c6d4381220a0087ce19dbf6984d92c451bd6b364). So maybe all we need
>>>> is patch 4, which should really be easy to do?
>>>>
>>>> Hans, could you give it a try? You'd need to use a 4.20 kernel at least.
>>>> I can do the official patch posting in case you confirm it working.
>>>
>>> Ehm ok, well... This is interesting.
>>>
>>> I just built a 4.20.13 (without the patch), and I did it from the Debian
>>> kernel team repo, because then I just get all latest config options like
>>> I would get them in Debian.
>>>
>>> I rebooted the HP Z820 with it (with Xen 4.11) and I don't see any
>>> errors similar to the ones I pasted earlier.
>>>
>>> I haven't been running any domU on it yet (just installed it), but this
>>> is not what I expected.
>>
>> Well, commit c6d4381220a0087ce19dbf6984d92c451bd6b364 is part of a
>> rather large series making the dma interface cleaner and using it more
>> correctly where appropriate. Maybe your use case is covered by this
>> series already.
> 
> It seems so. That's good, of course, but it also means that I cannot be
> of any use here any more to test the additional proposed change. ;]

I don't think the change is needed any longer.

Christoph's series was meant to fix stuff like that and it did that very
well.


Juergen

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Bug#850425: mpt3sas "swiotlb buffer is full" problem only under Xen Juergen Gross <jgross@suse.com> - 2019-03-11 08:00 +0100
  Bug#850425: mpt3sas "swiotlb buffer is full" problem only under Xen Juergen Gross <jgross@suse.com> - 2019-03-12 17:10 +0100
    Bug#850425: mpt3sas "swiotlb buffer is full" problem only under Xen Juergen Gross <jgross@suse.com> - 2019-03-12 20:30 +0100

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