Re: [Qemu-devel] [PATCH qemu] sysemu: support up to 1024 vCPUs

[Alexey Kardashevskiy]

Ping, anyone?

I rather expected floods of mails on such a controversial topic :)


On 11/10/16 09:19, Alexey Kardashevskiy wrote:
> Ping, anyone?
> 
> 
> On 04/10/16 11:33, Alexey Kardashevskiy wrote:
>> From: Greg Kurz <address@hidden>
>>
>> Some systems can already provide more than 255 hardware threads.
>>
>> Bumping the QEMU limit to 1024 seems reasonable:
>> - it has no visible overhead in top;
>> - the limit itself has no effect on hot paths.
>>
>> Signed-off-by: Greg Kurz <address@hidden>
>> Signed-off-by: Alexey Kardashevskiy <address@hidden>
>> ---
>>  include/sysemu/sysemu.h | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
>> index ef2c50b..2ec0bd8 100644
>> --- a/include/sysemu/sysemu.h
>> +++ b/include/sysemu/sysemu.h
>> @@ -173,7 +173,7 @@ extern int mem_prealloc;
>>   *
>>   * Note that cpu->get_arch_id() may be larger than MAX_CPUMASK_BITS.
>>   */
>> -#define MAX_CPUMASK_BITS 255
>> +#define MAX_CPUMASK_BITS 1024
>>  
>>  #define MAX_OPTION_ROMS 16
>>  typedef struct QEMUOptionRom {
>>
> 
> 


-- 
Alexey