Re: [PATCH 4/4] KVM: x86: Hyper-V tsc page setup

2016-09-19 Thread Roman Kagan
On Mon, Sep 19, 2016 at 01:39:13PM +0200, Paolo Bonzini wrote: > Lately tsc page was implemented but filled with empty > values. This patch setup tsc page scale and offset based > on vcpu tsc, tsc_khz and HV_X64_MSR_TIME_REF_COUNT value. > > The valid tsc page drops HV_X64_MSR_TIME_REF_COUNT msr

[PATCH 4/4] KVM: x86: Hyper-V tsc page setup

2016-09-19 Thread Paolo Bonzini
Lately tsc page was implemented but filled with empty values. This patch setup tsc page scale and offset based on vcpu tsc, tsc_khz and HV_X64_MSR_TIME_REF_COUNT value. The valid tsc page drops HV_X64_MSR_TIME_REF_COUNT msr reads count to zero which potentially improves performance. Signed-off-b

Re: [PATCH 4/4] KVM: x86: Hyper-V tsc page setup

2016-09-02 Thread Roman Kagan
On Thu, Sep 01, 2016 at 05:26:15PM +0200, Paolo Bonzini wrote: > Lately tsc page was implemented but filled with empty > values. This patch setup tsc page scale and offset based > on vcpu tsc, tsc_khz and HV_X64_MSR_TIME_REF_COUNT value. > > The valid tsc page drops HV_X64_MSR_TIME_REF_COUNT msr

[PATCH 4/4] KVM: x86: Hyper-V tsc page setup

2016-09-01 Thread Paolo Bonzini
Lately tsc page was implemented but filled with empty values. This patch setup tsc page scale and offset based on vcpu tsc, tsc_khz and HV_X64_MSR_TIME_REF_COUNT value. The valid tsc page drops HV_X64_MSR_TIME_REF_COUNT msr reads count to zero which potentially improves performance. Signed-off-b