Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-19 Thread Andreas Kinzler
On 18.11.2019 17:25, George Dunlap wrote: Where were these values collected -- on a PV dom0? Or from within the guest? Neither. Bare metal kernel - no Xen at all. Could you try this with `0111` instead? Works. '1000' crashes again. Now it is clear that 7 is the maximum Windows accepts.

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-18 Thread George Dunlap
On 11/18/19 4:11 PM, Andreas Kinzler wrote: > On 15.11.2019 18:13, 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

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-18 Thread Andreas Kinzler
On 15.11.2019 18:13, 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 = [ "0x8008:ecx=0100" ] to xl.cfg

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-18 Thread Jan Beulich
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

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-18 Thread George Dunlap
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 = [

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-18 Thread Jan Beulich
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 = [ "0x8008:ecx=0100"

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-18 Thread Jan Beulich
On 18.11.2019 13:29, 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 = [

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-18 Thread Jan Beulich
On 15.11.2019 18:13, 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 = [ "0x8008:ecx=0100"

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-15 Thread Steven Haigh
Can add weight to these findings. Tested with Xen 4.12.1 and the cpuid line suggested and it looks like my Windows VM has come up with 4 vCPUS. I can't RDP in to make sure its 100% booted, but it certainly isn't doing the crash dump cycle - and CPU usage is consistent with being successfully

Re: [Xen-devel] Ryzen 3xxx works with Windows

2019-11-15 Thread George Dunlap
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 = [ "0x8008:ecx=0100" ] > > to xl.cfg and then Windows runs great

[Xen-devel] Ryzen 3xxx works with Windows

2019-11-15 Thread Andreas Kinzler
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 = [ "0x8008:ecx=0100" ] to xl.cfg and then Windows runs great with 16 vCPUs. Cinebench R15 score is >2050 which is more