On Wed, Feb 07, 2018 at 04:31:59PM +0000, Rolf Neugebauer wrote: > On Wed, Feb 7, 2018 at 2:34 PM, Greg KH <gre...@linuxfoundation.org> wrote: > > On Tue, Feb 06, 2018 at 03:24:44PM +0100, Borislav Petkov wrote: > >> On Tue, Feb 06, 2018 at 02:09:35PM +0000, Rolf Neugebauer wrote: > >> > The backport of 7e702d17ed1 ("x86/microcode/intel: Extend BDW > >> > late-loading further with LLC size check") to 4.9.79 and 4.4.14 causes > >> > a division by zero panic on some single vCPU machine types on Google > >> > Cloud (e.g. g1-small and n1-standard-1): > >> > >> The microcode loader is not supposed to load in a guest. > >> > >> Greg, I guess you need something like this: > >> > >> a15a753539ec ("x86/microcode/AMD: Do not load when running on a > >> hypervisor") > >> > >> I haven't tried whether it applies cleanly though... > > > > It applied cleanly to 4.9 (with some fuzz, but looks clean enough...) > > > > But for 4.4, not at all. Rolf, any chance you could backport the patch > > there for this issue? If not, I can add it to my queue, but it might > > take a few days... > > The backport was straight forward. I've added it below. If my mailer > (gmail) screws this up let me where I should send it with 'git > send-email'
Yeah, it's messed up, can you resend it please? thanks, greg k-h