[PATCH v2 0/2] Inject a PMI for KVM Guest when ToPA buffer is filled
From: Luwei Kang
Date: Mon Feb 18 2019 - 06:26:50 EST
Each intel processor trace table of physical addresses (ToPA) entry
has an INT bit. If this bit is set, the processor will signal a
performance-monitoring interrupt (PMI) when the corresponding trace
output region is filled. This patch set will inject a PMI for Intel
Processor Trace when ToPA buffer is filled.
>From v1:
- Exported a global function pointers may not a good chioce.
Add a new member in kvm_guest_cbs to send Intel PT PMI for KVM guest.
Luwei Kang (2):
KVM: x86: Inject PMI for KVM guest
KVM: x86: Add support of clear Trace_ToPA_PMI status
arch/x86/events/intel/core.c | 6 +++++-
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/include/asm/msr-index.h | 8 ++++++++
arch/x86/kvm/vmx/pmu_intel.c | 8 +++++++-
arch/x86/kvm/x86.c | 10 ++++++++++
include/linux/perf_event.h | 1 +
6 files changed, 32 insertions(+), 2 deletions(-)
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1.8.3.1