On Tue, Dec 18, 2018 at 11:10:39PM +0100, Sebastian Andrzej Siewior wrote:
[ resending without broken headers ]
this is a backport of commit 7aa54be297655 ("locking/qspinlock, x86:
Provide liveness guarantee") for the v4.9 stable tree.
For the v4.4 tree the ARCH_USE_QUEUED_SPINLOCKS option got disabled on
x86.
For v4.9 it has been decided to do a minimal backport of the final fix
(including all its dependencies).
With this backport I can't reproduce the issue in the latest v4.9-RT
tree. I was able to boot (and use) an arm64 box with these patches so it
is not broken in an abvious way.
Queued up, thank you.
I've also grabbed 6cc65be4f6f2a ("locking/qspinlock: Fix build for
anonymous union in older GCC compilers").
--
Thanks,
Sasha
