On 01/15/2017 11:49 AM, Larry Finger wrote:
On 01/06/2017 11:06 AM, Larry Finger wrote:
On 01/06/2017 08:06 AM, Frank Mehnert wrote:
Hi Larry,
On Dienstag, 3. Januar 2017 21:48:06 CET Larry Finger wrote:
On 12/27/2016 11:16 AM, Larry Finger wrote:
On 12/27/2016 10:56 AM, Larry Finger wrote:
In kernel 4.10-rc1, the kernel routines register_cpu_notifier() and
unregister_cpu_notifier() have been removed and their function replaced by
callbacks from the hotplug state machine. After looking at the changes
required
in some other drivers, I have seen that the required changes will not be
trivial. Before I start doing the work, I want to know if the changes have
been
started and/or done by Oracle.
One thing I failed to mention. Commit 7fd8329ba502 in 4.10-rc1 also messes up
the ability to define true/false in an out-of-kernel driver. I have
submitted a
kernel patch to fix this
(http://lkml.iu.edu/hypermail/linux/kernel/1612.3/00086.html), but it has not
yet been merged or received any comments.
My patch was merged today. It has not yet hit mainline, but I expect it to be
there as of 4.10-rc3. I still have no fix for the missing
register_cpu_notifier(), etc.
thanks for the information. I assume we will do it like the Linux kernel and use
cpuhp_setup_state_nocalls() to register CPU hotplug callbacks. But before we can
provide a fix we need to do a few tests.
I think that is the correct approach, but I have not had time to actually do it
yet. Unlike most API changes, this one is a bit more intrusive. Once you get a
patch, I would be pleased to help test it. Having to boot an old kernel to run a
VM is getting old. In addition, the openSUSE kernel HEAD project is running
4.10-rcX kernels, and the VB build fails every time they trigger a new build.
Version 5.1.14 has a proper fix, which is better than the hack I posted. In
addition, the fix for the true/false problem was merged into kernel mainline
yesterday. It will definitely be in kernel 4.10-rc5.
Larry
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