On 13/03/2019 07:39, Jan Beulich wrote: >>>> On 12.03.19 at 17:53, <roger....@citrix.com> wrote: >> IIRC we agreed that systems with mixed CPU versions are not supported, >> hence the same microcode blob should be used to update all the >> possible CPUs on the system, so a list should not be needed here. > That's not what I recall. We agreed to not store everything, because > mixed-family / mixed-model systems are commonly not supported by > the hw vendors. But mixed stepping systems may well be.
The difference between Skylake and CascadeLake server CPUs is only in the stepping (4 vs 6). Same for Kaby/Coffee/Whiskey/Amber lake (the mobile and desktop lines have a model each, and newer generations are just new steppings). I'll have to defer to Intel as to exactly what is supported, but when I asked this before, the answer was that no heterogeneity was supported at all, not even at the stepping level or platform ID level. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
