From: Luwei Kang <luwei.kang@intel.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
hpa@zytor.com, x86@kernel.org, pbonzini@redhat.com,
rkrcmar@redhat.com, peterz@infradead.org, acme@kernel.org,
alexander.shishkin@linux.intel.com, jolsa@redhat.com,
namhyung@kernel.org, kan.liang@linux.intel.com,
ak@linux.intel.com, konrad.wilk@oracle.com,
Janakarajan.Natarajan@amd.com, mattst88@gmail.com,
tim.c.chen@linux.intel.com, Luwei Kang <luwei.kang@intel.com>
Subject: [PATCH v2 0/2] Inject a PMI for KVM Guest when ToPA buffer is filled
Date: Mon, 18 Feb 2019 19:26:06 -0500 [thread overview]
Message-ID: <1550535968-7652-1-git-send-email-luwei.kang@intel.com> (raw)
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(-)
--
1.8.3.1
next reply other threads:[~2019-02-18 11:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-19 0:26 Luwei Kang [this message]
2019-02-19 0:26 ` [PATCH v2 1/2] KVM: x86: Inject PMI for KVM guest Luwei Kang
2019-02-19 0:26 ` [PATCH v2 2/2] KVM: x86: Add support of clear Trace_ToPA_PMI status Luwei Kang
2019-02-22 17:24 ` [PATCH v2 0/2] Inject a PMI for KVM Guest when ToPA buffer is filled Paolo Bonzini
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