Once stop_machine() is gone from the CPU offline path, we won't be able
to depend on disabling preemption to prevent CPUs from going offline
from under us.
Use the get/put_online_cpus_atomic() APIs to prevent CPUs from going
offline, while invoking from atomic context.
Cc: Gleb Natapov
Cc: Paolo
Il 25/06/2013 22:30, Srivatsa S. Bhat ha scritto:
> - cpu = get_cpu();
> + cpu = get_online_cpus_atomic();
> vmx_vcpu_load(&vmx->vcpu, cpu);
> vmx->vcpu.cpu = cpu;
> err = vmx_vcpu_setup(vmx);
> vmx_vcpu_put(&vmx->vcpu);
> - put_cpu();
> + put_online_cpus_ato
On 06/26/2013 01:16 PM, Paolo Bonzini wrote:
> Il 25/06/2013 22:30, Srivatsa S. Bhat ha scritto:
>> -cpu = get_cpu();
>> +cpu = get_online_cpus_atomic();
>> vmx_vcpu_load(&vmx->vcpu, cpu);
>> vmx->vcpu.cpu = cpu;
>> err = vmx_vcpu_setup(vmx);
>> vmx_vcpu_put(&vmx->vcpu);
Il 26/06/2013 10:06, Srivatsa S. Bhat ha scritto:
> On 06/26/2013 01:16 PM, Paolo Bonzini wrote:
>> Il 25/06/2013 22:30, Srivatsa S. Bhat ha scritto:
>>> - cpu = get_cpu();
>>> + cpu = get_online_cpus_atomic();
>>> vmx_vcpu_load(&vmx->vcpu, cpu);
>>> vmx->vcpu.cpu = cpu;
>>> err = v
On 06/26/2013 01:53 PM, Paolo Bonzini wrote:
> Il 26/06/2013 10:06, Srivatsa S. Bhat ha scritto:
>> On 06/26/2013 01:16 PM, Paolo Bonzini wrote:
>>> Il 25/06/2013 22:30, Srivatsa S. Bhat ha scritto:
- cpu = get_cpu();
+ cpu = get_online_cpus_atomic();
vmx_vcpu_load(&vmx->vcpu, c
Il 26/06/2013 10:41, Srivatsa S. Bhat ha scritto:
> On 06/26/2013 01:53 PM, Paolo Bonzini wrote:
>> Il 26/06/2013 10:06, Srivatsa S. Bhat ha scritto:
>>> On 06/26/2013 01:16 PM, Paolo Bonzini wrote:
Il 25/06/2013 22:30, Srivatsa S. Bhat ha scritto:
> - cpu = get_cpu();
> + cpu = get_on
