Re: Please backport 9e249c484128 ("iommu/amd: serialize sequence allocation under concurrent TLB invalidations") to 6.12.y

> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1135313#43 confirmed
> that a backport of 9e249c484128 solved the problem. Now that one does
> not apply cleanly. As an alternative the following two might work, the
> first is a clean cherry-pick, the second on top needed a slight
> adjustment since in 6.12.y f32fe7cb0198 is not present.

Both patches queued for 6.12.y.

I extended the same backport to 6.6.y as well - it carries d2a0cac10597
and the same older atomic64_add_return(1,..) pattern, so it is exposed
to the same race.

--
Sasha