On Fri, Feb 07, 2014 at 09:56:29AM -0500, Prarit Bhargava wrote:
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.
Haven't looked in some time, but last I knew, they don't ship both an amd
and an intel kernel. They ship an "i386" kernel, which works for all x86
cpus, amd and intel alike, and they ship an "amd64" kernel, which works
for all x86_64 cpus, amd and intel alike. This is the exact same thing as
us shipping i386 and x86_64 packages, just slightly different naming (AMD
originated the platform, Debian named their 64-bit packages accordingly).
--
Jarod Wilson
jarod(a)redhat.com