On Wed, Sep 17, 2014 at 05:04:33PM +0200, Radim Krčmář wrote:
> which would result in a similar if-else hack
>
> if (family > X)
> ebx.split.max_monitor_line_size_after_family_X = 0
> else
> ebx.split.max_monitor_line_size = 0
>
> other options are
> ebx.split.after_family_X.max_monitor_line_size
> or even
> ebx.split.max_monitor_line_size.after_family_X
And how is that better than simply doing
cpuid = cpuid_ebx(5);
if (family > X)
max_monitor_line_size = cpuid & MASK_FAM_X;
else
max_monitor_line_size = cpuid & MASK_BEFORE_FAM_X;
?
With proper variable naming all is perfectly clear, readable
and simple. You don't need to open even the CPUID manual - the
variable tells you you're getting the max monitor line size -
"ebx.split.max_monitor_line_size_after_family_X" needs me to parse it
with my eyes first.
--
Regards/Gruss,
Boris.
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