RE: [Linux v4.10.0-rc1] call-traces after suspend-resume (pm? i915? cpu/hotplug?)

From: Doug Smythies
Date: Wed Dec 28 2016 - 19:34:05 EST

On 2016.12.28 14:33 Rafael J. Wysocki wrote:
> On Wed, Dec 28, 2016 at 11:00 AM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
>> On Wed, Dec 28, 2016 at 9:29 AM, Jani Nikula <jani.nikula@xxxxxxxxx> wrote:
>>> On Wed, 28 Dec 2016, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
>>>> On Tue, Dec 27, 2016 at 10:13 PM, Pavel Machek <pavel@xxxxxx> wrote:
>>>> P.S.: Revert "cpu/hotplug: Prevent overwriting of callbacks"
>>>> This reverts commit dc280d93623927570da279e99393879dbbab39e7
>>>> Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
>>>> Date: Wed Dec 21 20:19:49 2016 +0100
>>>> cpu/hotplug: Prevent overwriting of callbacks

With respect to kernel 4.10-rc1 and the above referenced commit:

On my computer rdmsr was not working, and therefore many tools
that use it (i.e. turbostat) were also broken.

I bisected the kernel down to the same above referenced commit.
After finding some potentially related e-mails, I built a
4.10-rc1+ kernel with these:

0dad3a3 x86/mce/AMD: Make the init code more robust
b9d9d69 smp/hotplug: Undo tglxs brainfart
b4b8664 arm64: don't pull uaccess.h into *.S
7ce7d89 Linux 4.10-rc1

And now rdmsr is working fine, as is trubostat.