Why does Red Hat and Fedora software not distinguish between AMD and Intel kernels?

[Prarit Bhargava]

On 02/07/2014 09:21 AM, James Harrison wrote:
> Hello,
> I remember the times when Redhat software releases (6.2, 7.3, 8, 9) had a specific kernel for AMD and Intel CPUs.
> 
> Now forward on to present day and Red Hat software has one kernel build for AMD and Intel CPUs. When was the decision to switch to an all in one encompassing kernel and is there a performance hit. What allows us to have one kernel build for two different CPUs? 
> 
> The reason I ask these questions is that Ubuntu is still distinguishing between AMD and Intel CPUs. Why, and what is the difference between what they do and what Red Hat do to their Kernel compiles.
> 

Hmm ... I didn't know that.  I'm sure there is some reason for it but I know of
no kernel issues that require this to be the case.  I suppose there *might* be
some performance benefit but I would have thought by now we would have heard
from Red Hat Customers who require an AMD kernel.

P.