>>> On 05.08.16 at 15:50, <andrew.coop...@citrix.com> wrote:
> --- a/xen/arch/x86/cpu/common.c
> +++ b/xen/arch/x86/cpu/common.c
> @@ -476,7 +476,7 @@ void detect_extended_topology(struct cpuinfo_x86 *c)
>               sub_index++;
>       } while ( LEAFB_SUBTYPE(ecx) != INVALID_TYPE );
>  
> -     core_select_mask = (~(-1 << core_plus_mask_width)) >> ht_mask_width;
> +     core_select_mask = (~(-1u << core_plus_mask_width)) >> ht_mask_width;

-1u is kind of bogus; could I talk you into using ~0u instead?

With that
Reviewed-by: Jan Beulich <jbeul...@suse.com>

Jan


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