Re: Why the mce reverts in 4.16-rt?
- Date: Wed, 11 Jul 2018 09:23:11 +0200
- From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
- Subject: Re: Why the mce reverts in 4.16-rt?
On 2018-07-10 20:56:24 [-0400], Steven Rostedt wrote:
> Hi Sebastian,
> I'm looking at backporting patches from 4.16-rt and noticed that you
> Revert "x86: Convert mce timer to hrtimer"
> Revert "x86/mce: use swait queue for mce wakeups"
> With no explanation to why they were reverted. When did things change?
> Should this be 4.14-rt material?
from the announce email:
| Changes since v4.16.8-rt2:
| - Drop two MCE related patches. They are no longer required since the
| timer wheel rework.
The timer wheel rework made it possible to have a raw_spin_lock_t in the
timer_list timer. The problem with MCE was that it enqueued a timer from
hardirq context which is now possible. So the patches are no longer
required. This revert does not fix a bug in v4.14 nor does it break
> -- Steve