Hello, Laurent.
On Thu, Aug 24, 2017 at 02:10:31PM +0200, Laurent Vivier wrote:
> > Yeah, it just needs to match up new cpus to the cpu ids assigned to
> > the right node.
>
> We are not able to assign the cpu ids to the right node before the CPU
> is present, because firmware doesn't provide CPU
On 23/08/2017 15:26, Tejun Heo wrote:
> Hello, Michael.
>
> On Wed, Aug 23, 2017 at 09:00:39PM +1000, Michael Ellerman wrote:
>>> I don't think that's true. The CPU id used in kernel doesn't have to
>>> match the physical one and arch code should be able to pre-map CPU IDs
>>> to nodes and use th
Hello, Michael.
On Wed, Aug 23, 2017 at 09:00:39PM +1000, Michael Ellerman wrote:
> > I don't think that's true. The CPU id used in kernel doesn't have to
> > match the physical one and arch code should be able to pre-map CPU IDs
> > to nodes and use the matching one when hotplugging CPUs. I'm n
On 23/08/2017 13:00, Michael Ellerman wrote:
> Hi Tejun,
>
> Tejun Heo writes:
>> Hello, Michael.
>>
>> On Tue, Aug 22, 2017 at 11:41:41AM +1000, Michael Ellerman wrote:
This is something powerpc needs to fix.
>>>
>>> There is no way for us to fix it.
>>
>> I don't think that's true. The CP
Hi Tejun,
Tejun Heo writes:
> Hello, Michael.
>
> On Tue, Aug 22, 2017 at 11:41:41AM +1000, Michael Ellerman wrote:
>> > This is something powerpc needs to fix.
>>
>> There is no way for us to fix it.
>
> I don't think that's true. The CPU id used in kernel doesn't have to
> match the physical
Hello, Michael.
On Tue, Aug 22, 2017 at 11:41:41AM +1000, Michael Ellerman wrote:
> > This is something powerpc needs to fix.
>
> There is no way for us to fix it.
I don't think that's true. The CPU id used in kernel doesn't have to
match the physical one and arch code should be able to pre-map
Tejun Heo writes:
> On Mon, Aug 21, 2017 at 03:49:50PM +0200, Laurent Vivier wrote:
>> In wq_numa_init() a list of NUMA nodes with their list of possible CPUs
>> is built.
>>
>> Unfortunately, on powerpc, the Firmware is only able to provide the
>> node of a CPU if the CPU is present. So, in our
On Mon, Aug 21, 2017 at 03:49:50PM +0200, Laurent Vivier wrote:
> In wq_numa_init() a list of NUMA nodes with their list of possible CPUs
> is built.
>
> Unfortunately, on powerpc, the Firmware is only able to provide the
> node of a CPU if the CPU is present. So, in our case (possible CPU)
> CPU
In wq_numa_init() a list of NUMA nodes with their list of possible CPUs
is built.
Unfortunately, on powerpc, the Firmware is only able to provide the
node of a CPU if the CPU is present. So, in our case (possible CPU)
CPU ids are known, but as the CPU is not present, the node id is
unknown and all
