[Xen-devel] Re: [PATCH] xen: xen_init_cpuid_mask: Zero cx before calling xen_cpuid

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

On 08/08/09 13:15, Josh Triplett wrote:
> CPUID function 1 doesn't use cx, but xen_cpuid doesn't know that,
> resulting in this warning:
>
> arch/x86/xen/enlighten.c: In function âxen_start_kernelâ:
> arch/x86/xen/enlighten.c:192: warning: âcxâ may be used uninitialized in this 
> function
> arch/x86/xen/enlighten.c:205: note: âcxâ was declared here
>
> Set cx = 0 to avoid this warning.  This seems preferable to implementing
> a xen_cpuid_nocount without the input constraint for cx, and either of
> those seem preferable to just ignoring the warning.
>   

Thanks, applied.

    J

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