On 9/7/18 10:31 AM, Olaf Hering wrote:
> The command 'xl vcpu-set 0 0', issued in dom0, will crash dom0:
>
> BUG: unable to handle kernel NULL pointer dereference at 02d8
> PGD 0 P4D 0
> Oops: [#1] PREEMPT SMP NOPTI
> CPU: 7 PID: 65 Comm: xenwatch Not tainted
On 11/09/18 12:48, Olaf Hering wrote:
> Am Tue, 11 Sep 2018 09:52:58 +0200
> schrieb Olaf Hering :
>
>> As Jürgen suggested in another mail, Xen should probably disable hotplugging
>> for cpu#0 in the generic setup code. Then cpu_is_hotpluggable(cpu) would
>> do the right thing.
>
> The relevant
Am Tue, 11 Sep 2018 09:52:58 +0200
schrieb Olaf Hering :
> As Jürgen suggested in another mail, Xen should probably disable hotplugging
> for cpu#0 in the generic setup code. Then cpu_is_hotpluggable(cpu) would
> do the right thing.
The relevant code is all private to arch/x86/kernel/topology.c.
On 11/09/18 09:52, Olaf Hering wrote:
> Am Fri, 7 Sep 2018 12:56:37 -0400
> schrieb Boris Ostrovsky :
>
>> I was hoping you'd respond to my question about warning.
>
> It looks like CONFIG_BOOTPARAM_HOTPLUG_CPU0=y is the reason for the warning.
> As Jürgen suggested in another mail, Xen should
Am Fri, 7 Sep 2018 12:56:37 -0400
schrieb Boris Ostrovsky :
> I was hoping you'd respond to my question about warning.
It looks like CONFIG_BOOTPARAM_HOTPLUG_CPU0=y is the reason for the warning.
As Jürgen suggested in another mail, Xen should probably disable hotplugging
for cpu#0 in the
Am Fri, 7 Sep 2018 12:56:37 -0400
schrieb Boris Ostrovsky :
> I was hoping you'd respond to my question about warning.
>
> root@haswell> xl vcpu-set 3 0
> and in the guest
>
> [root@vm-0238 ~]# [ 32.866955] [ cut here ]
> [ 32.866963] spinlock on CPU0 exists on
On 09/07/2018 10:31 AM, Olaf Hering wrote:
> The command 'xl vcpu-set 0 0', issued in dom0, will crash dom0:
>
> BUG: unable to handle kernel NULL pointer dereference at 02d8
> PGD 0 P4D 0
> Oops: [#1] PREEMPT SMP NOPTI
> CPU: 7 PID: 65 Comm: xenwatch Not tainted
On 07/09/18 16:31, Olaf Hering wrote:
> The command 'xl vcpu-set 0 0', issued in dom0, will crash dom0:
>
> BUG: unable to handle kernel NULL pointer dereference at 02d8
> PGD 0 P4D 0
> Oops: [#1] PREEMPT SMP NOPTI
> CPU: 7 PID: 65 Comm: xenwatch Not tainted
