Re: [Xen-devel] [PATCH v1 04/12] xen/hvmlite: Bootstrap HVMlite guest
From: Borislav Petkov
Date: Wed Jan 27 2016 - 11:14:58 EST
On Wed, Jan 27, 2016 at 02:50:36PM +0000, David Vrabel wrote:
> Surely the interesting comparison here is how is (early) microcode
> loading disabled in KVM guests?
It isn't - kvm simply ignores the write to the microcode application
MSRs MSR_AMD64_PATCH_LOADER and MSR_IA32_UCODE_REV, respectively.
> We should use the same mechanism for HVMlite guests.
SUSE Linux GmbH, GF: Felix ImendÃrffer, Jane Smithard, Graham Norton, HRB 21284 (AG NÃrnberg)