Hi Zhao,
On 4/10/25 2:45 AM, Zhao Liu wrote:
> On Sun, Mar 30, 2025 at 06:32:29PM -0700, Dongli Zhang wrote:
>> Date: Sun, 30 Mar 2025 18:32:29 -0700
>> From: Dongli Zhang
>> Subject: [PATCH v3 10/10] target/i386/kvm: don't stop Intel PMU counters
>> X-Mailer:
On Sun, Mar 30, 2025 at 06:32:29PM -0700, Dongli Zhang wrote:
> Date: Sun, 30 Mar 2025 18:32:29 -0700
> From: Dongli Zhang
> Subject: [PATCH v3 10/10] target/i386/kvm: don't stop Intel PMU counters
> X-Mailer: git-send-email 2.43.5
>
> The kvm_put_msrs() sets the MSRs usin
The kvm_put_msrs() sets the MSRs using KVM_SET_MSRS. The x86 KVM processes
these MSRs one by one in a loop, only saving the config and triggering the
KVM_REQ_PMU request. This approach does not immediately stop the event
before updating PMC.
In additional, PMU MSRs are set only at levels >= KVM_PU
