On 11/19/22 13:29, Dongli Zhang wrote:
The "perf stat" at the VM side still works even we set "-cpu host,-pmu" in
the QEMU command line. That is, neither "-cpu host,-pmu" nor "-cpu EPYC"
could disable the pmu virtualization in an AMD environment.
We still see below at VM kernel side ...
[0.
Hi Greg and Liang,
On 11/21/22 6:23 AM, Liang Yan wrote:
>
> On 11/21/22 06:03, Greg Kurz wrote:
>> On Sat, 19 Nov 2022 04:29:00 -0800
>> Dongli Zhang wrote:
>>
>>> The "perf stat" at the VM side still works even we set "-cpu host,-pmu" in
>>> the QEMU command line. That is, neither "-cpu host,-
On 11/21/22 06:03, Greg Kurz wrote:
On Sat, 19 Nov 2022 04:29:00 -0800
Dongli Zhang wrote:
The "perf stat" at the VM side still works even we set "-cpu host,-pmu" in
the QEMU command line. That is, neither "-cpu host,-pmu" nor "-cpu EPYC"
could disable the pmu virtualization in an AMD enviro
On Sat, 19 Nov 2022 04:29:00 -0800
Dongli Zhang wrote:
> The "perf stat" at the VM side still works even we set "-cpu host,-pmu" in
> the QEMU command line. That is, neither "-cpu host,-pmu" nor "-cpu EPYC"
> could disable the pmu virtualization in an AMD environment.
>
> We still see below at V
The "perf stat" at the VM side still works even we set "-cpu host,-pmu" in
the QEMU command line. That is, neither "-cpu host,-pmu" nor "-cpu EPYC"
could disable the pmu virtualization in an AMD environment.
We still see below at VM kernel side ...
[0.510611] Performance Events: Fam17h+ core
