Re: [Xen-devel] pvops microcode support for AMD FAM >= 15

[Ian Campbell <ijc@xxxxxxxxxxxxxx>]

(trim quote please...)
On Wed, 2012-12-05 at 21:47 +0000, Konrad Rzeszutek Wilk wrote:
> Do you want to prep a patch that I can stick in my 'microcode' branch?
> .. That I will at some point try to upstream.

You might want to look back at the archives when Jeremy first tried to
upstream this work, it was a vehement "No" and the resulting thread was
not pretty.

Now that we have early loading via the hypervisor in 4.2 and Linux is
finally in the process of growing its own early microcode loading
solution I suspect the No would be even firmer.

It is on xenbits if you want it anyway:

git://xenbits.xen.org/people/ianc/linux-2.6.git debian/wheezy/microcode

About the only argument I can see for continuing to try upstreaming this
stuff is that in
http://www.gossamer-threads.com/lists/linux/kernel/1583630 Fenghua says:

        Note, however, that Linux users have gotten used to being able
        to install a microcode patch in the field without having a
        reboot; we support that model too.

i.e. this is an argument for keeping the previous scheme in parallel,
which I suppose is an argument for supporting the same under Xen (I
don't know if its a good one though.

Ian.

-- 
Ian Campbell


All the existing 2.0.x kernels are to buggy for 2.1.x to be the
main goal.
                -- Alan Cox


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel