Jim Mattson

Sportscaster- TV-Radio in Central Illinois

morton, illinois, united states

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LKML: Jim Mattson: Re: [PATCH v4 4/6] KVM: x86/pmu: Re-evaluate Host-Only/Guest-Only on nested SVM transitions

On Wed, Apr 15, 2026 at 5:29 PM Sean Christopherson wrote: > > On Wed, Apr 15, 2026, Jim Mattson wrote: > > On Wed, Apr 15, 2026 at 2:26 PM Sean Christopherson wrote: > > > On Thu, Apr 09, 2026, Jim Mattson wrote: > > > > ... See more

lkml.org•Jim Mattson•Apr 17, 2026

LKML: Jim Mattson: Re: [PATCH v4 4/6] KVM: x86/pmu: Re-evaluate Host-Only/Guest-Only on nested SVM transitions

On Wed, Apr 15, 2026 at 2:26 PM Sean Christopherson wrote: > > On Thu, Apr 09, 2026, Jim Mattson wrote: > > On Thu, Apr 9, 2026 at 2:21 PM Sean Christopherson wrote: > > > > > > On Thu, Apr 09, 2026, Sean Christopherson wrote... See more

lkml.org•Jim Mattson•Apr 15, 2026

LKML: Jim Mattson: Re: [PATCH 2/4] perf/x86/intel: Don't context switch DS_AREA (and PEBS config) if PEBS is unused

On Tue, Apr 14, 2026 at 3:49 PM Sean Christopherson wrote: > > On Tue, Apr 14, 2026, Jim Mattson wrote: > > On Tue, Apr 14, 2026 at 12:14 PM Sean Christopherson wrote: > > > @@ -5065,6 +5056,28 @@ static struct perf_guest_switch_msr *... See more

lkml.org•Jim Mattson•Apr 15, 2026

LKML: Jim Mattson: Re: [PATCH 2/4] perf/x86/intel: Don't context switch DS_AREA (and PEBS config) if PEBS is unused

On Tue, Apr 14, 2026 at 12:14 PM Sean Christopherson wrote: > > When filling the list of MSRs to be loaded by KVM on VM-Enter and VM-Exit, > insert DS_AREA and (conditionally) MSR_PEBS_DATA_CFG into the list if and > only if PEBS will be activ... See more

lkml.org•Jim Mattson•Apr 14, 2026

LKML: Jim Mattson: Re: [PATCH v9 02/10] x86/bhi: Make clear_bhb_loop() effective on newer CPUs

On Tue, Apr 7, 2026 at 12:11 PM Pawan Gupta wrote: > > On Tue, Apr 07, 2026 at 11:40:57AM -0700, Jim Mattson wrote: > > My proposal is as follows: > > > > 1. The (advanced) hypervisor can advertise to the guest (via CPUID bit > ... See more

lkml.org•Jim Mattson•Apr 7, 2026

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Featured Articles

LKML: Jim Mattson: Re: [PATCH v4 4/6] KVM: x86/pmu: Re-evaluate Host-Only/Guest-Only on nested SVM transitions

LKML: Jim Mattson: Re: [PATCH v4 4/6] KVM: x86/pmu: Re-evaluate Host-Only/Guest-Only on nested SVM transitions

LKML: Jim Mattson: Re: [PATCH 2/4] perf/x86/intel: Don't context switch DS_AREA (and PEBS config) if PEBS is unused

LKML: Jim Mattson: Re: [PATCH 2/4] perf/x86/intel: Don't context switch DS_AREA (and PEBS config) if PEBS is unused

LKML: Jim Mattson: Re: [PATCH v9 02/10] x86/bhi: Make clear_bhb_loop() effective on newer CPUs

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LKML: Jim Mattson: Re: [PATCH v4 4/6] KVM: x86/pmu: Re-evaluate Host-Only/Guest-Only on nested SVM transitions

LKML: Jim Mattson: Re: [PATCH v4 4/6] KVM: x86/pmu: Re-evaluate Host-Only/Guest-Only on nested SVM transitions

LKML: Jim Mattson: Re: [PATCH 2/4] perf/x86/intel: Don't context switch DS_AREA (and PEBS config) if PEBS is unused

LKML: Jim Mattson: Re: [PATCH 2/4] perf/x86/intel: Don't context switch DS_AREA (and PEBS config) if PEBS is unused

LKML: Jim Mattson: Re: [PATCH v9 02/10] x86/bhi: Make clear_bhb_loop() effective on newer CPUs

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