[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Ryzen 3xxx works with Windows
On 18.11.2019 16:15, George Dunlap wrote: > On 11/18/19 12:54 PM, Jan Beulich wrote: >> On 18.11.2019 12:39, George Dunlap wrote: >>> On 11/15/19 5:06 PM, Andreas Kinzler wrote: >>>> Hello All, >>>> >>>> I compared the CPUID listings from Ryzen 2700X (attached as tar.xz) to >>>> 3700X and found only very few differences. I added >>>> >>>> cpuid = [ "0x80000008:ecx=xxxxxxxxxxxxxxxx0100xxxxxxxxxxxx" ] >>>> >>>> to xl.cfg and then Windows runs great with 16 vCPUs. Cinebench R15 score >>>> is >2050 which is more or less the bare metal value. >>> >>> So this is setting those bits to 0100, or 4. >> >> One of the many possible problems with our incrementing of this field >> could be that this results in a value that in "reserved" as per AMD's >> documentation. At least for some of the Fam17 models they document >> exactly which values are "legal". > > Do you have a reference for this? Unfortunately none that I can share. But you can bet that OS vendors use that rather than the public variant(s) for their development work. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/xen-devel
|
![]() |
Lists.xenproject.org is hosted with RackSpace, monitoring our |