Hi Zhao,
On 4/9/25 10:05 PM, Zhao Liu wrote:
> Hi Dongli,
>
> The logic is fine for me :-) And thank you to take my previous
> suggestion. When I revisit here after these few weeks, I have some
> thoughts:
>
>> +if (pmu_cap) {
>> +if ((pmu_cap & KVM_PMU_CAP_DISABLE) &&
>> +
Hi Zhao,
On 4/9/25 10:05 PM, Zhao Liu wrote:
> Hi Dongli,
>
> The logic is fine for me :-) And thank you to take my previous
> suggestion. When I revisit here after these few weeks, I have some
> thoughts:
>
>> +if (pmu_cap) {
>> +if ((pmu_cap & KVM_PMU_CAP_DISABLE) &&
>> +
Hi Dongli,
The logic is fine for me :-) And thank you to take my previous
suggestion. When I revisit here after these few weeks, I have some
thoughts:
> +if (pmu_cap) {
> +if ((pmu_cap & KVM_PMU_CAP_DISABLE) &&
> +!X86_CPU(cpu)->enable_pmu) {
> +
There is no way to distinguish between the following scenarios:
(1) KVM_CAP_PMU_CAPABILITY is not supported.
(2) KVM_CAP_PMU_CAPABILITY is supported but disabled via the module
parameter kvm.enable_pmu=N.
In scenario (1), there is no way to fully disable AMD PMU virtualization.
In scenario (2),
