On 08/10/15 23:14, Ben Hutchings wrote:
> On Wed, 2015-09-02 at 10:18 +0100, Ian Campbell wrote:
>> [resending to correct stable address, sorry folks]
>>
>> TL;DR: Any backport of 30b03d05e074 to earlier than commit 1401c00e59e
>> ("xen/gntdev: convert priv->lock to a mutex", which was added in v4.0)
>> needs $something doing to it, either s/mutex/spinlock/ or (more likely)
>> backporting of 1401c00e59e too.
>>
>> Looking at LTS:
>>
>> 3.18.y:> > Backported both.
>> 3.16.y:> > Has backported neither
>> 3.14.y:> > * Only backported 30b03d05e074
>> 3.12.y:> > Has backported neither
>> 3.10.y:> > * Only backported 30b03d05e074
>> 3.4.y:> > Has backported neither
>> 3.2.y:> > Has backported neither
>>
>> So AFAICT 3.14.y and 3.10.y need fixes, probably following 3.18 and
>> backporting 1401c00e59e.
>>
>> 3.16/12/4/2 might need to be careful if they subsequently pick up 30b03d05.
> [...]
>
> I came up with the patch below for 3.2. Let me know if it's not
> correct.
Please just take commit 1401c00e59e instead.
David
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