Re: [Qemu-devel] [RFC 2 PATCH 03/16] hw/i386: Introduce X86CPUTopoInfo to contain topology info

[Babu Moger <babu.moger@amd.com>]

On 10/10/19 10:54 PM, Eduardo Habkost wrote:
> On Fri, Sep 06, 2019 at 07:11:57PM +0000, Moger, Babu wrote:
>> This is an effort to re-arrange few data structure for better
>> readability. Add X86CPUTopoInfo which will have all the topology
>> informations required to build the cpu topology. There is no
>> functional changes.
>>
>> Signed-off-by: Babu Moger <babu.moger@amd.com>
>> ---
> [...]
>> +typedef struct X86CPUTopoInfo {
>> +    unsigned numa_nodes;
>> +    unsigned nr_sockets;
>> +    unsigned nr_dies;
>> +    unsigned nr_cores;
>> +    unsigned nr_threads;
>> +} X86CPUTopoInfo;
> 
> With more complex topologies, the meaning of each of those fields
> may be ambiguous.  e.g.: is nr_cores cores per die, cores per
> ccx, or cores per socket?  Maybe we should use this opportunity
> to use more explicit names like threads_per_core, cores_per_die,
> dies_per_socket.

Yes. Changed it to

typedef struct X86CPUTopoInfo {
    unsigned nodes_per_pkg;
    unsigned dies_per_pkg;
    unsigned cores_per_die;
    unsigned threads_per_core;
} X86CPUTopoInfo;