On 11/07/18 11:15, Woodhouse, David wrote:
> On Wed, 2018-05-30 at 13:09 +0200, Juergen Gross wrote:
>> There is no need to set the same capabilities for each cpu
>> individually. This can easily be done for all cpus when starting the
>> kernel.
>> Upstream commit: 0808e80cb760de2733c0527d2090ed2205a1eef8 ("xen: set
>> cpu capabilities from xen_start_kernel()")
>> Signed-off-by: Juergen Gross <jgr...@suse.com>
>> Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com>
> That breaks PV guests because they get KAISER enabled — when
> kaiser_check_boottime_disable() runs, X86_FEATURE_XENPV isn't set.

Which kernel version are you talking about?

With upstream commit 60d3450167433f2d099ce2869dc52dd9e7dc9b29 which will
be part of next stable-4.9 everything is fine.


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