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

[Alexey Kardashevskiy]

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