Re: [Xen-devel] [PATCH 1/2] AMD/VPMU: 0xc0010000 - 0xc001007 MSRs are in PMU range

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 08/08/2016 10:09 AM, Jan Beulich wrote:
>> The reserved bits look the same on all supported families --- bits
>> 63:42, 39:36, 21 and 19. Except apparently on family 12h bit 19 is MBZ.
> Isn't MBZ == reserved for all practical purposes? 

My understanding is that when something is MBZ we know we shouldn't
write 1 there. Reserved can be either 1 or 0 --- that's what my system
may have with bit 19 set. (Although it's also possible that POST or BIOS
are sloppy).

-boris

> In any event the
> patch is fine then afaic.
>
> Jan
>



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