On 2018-12-13 09:39:46 [-0500], Sasha Levin wrote:
On Thu, Dec 13, 2018 at 09:33:36AM -0500, Sasha Levin wrote:
On Thu, Dec 13, 2018 at 03:09:15PM +0100, Sebastian Andrzej Siewior wrote:
Hi,
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.
What about 4.14? I see that at least some of these patches are missing there.
so v4.4 was easy peasy, v4.9 required a little work. So let me worry about v4.14 and v4.19 next.
Hrm, there was something really fishy with the headers on your original mail...
Interesting and I'm sorry. So infradead.org rejected all of my emails saying something similar but I have no clue what went wrong.
Sebastian