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Message-Id: <20211119102117.22304-1-nsaenzju@redhat.com>
Date: Fri, 19 Nov 2021 11:21:16 +0100
From: Nicolas Saenz Julienne <nsaenzju@...hat.com>
To: linux-arm-kernel@...ts.infradead.org, maz@...nel.org,
rostedt@...dmis.org
Cc: james.morse@....com, alexandru.elisei@....com,
suzuki.poulose@....com, catalin.marinas@....com, will@...nel.org,
nsaenzju@...hat.com, linux-kernel@...r.kernel.org,
kvmarm@...ts.cs.columbia.edu, mingo@...hat.com,
mtosatti@...hat.com, nilal@...hat.com
Subject: [RFC PATCH 0/2] KVM: arm64: Host/Guest trace syncronization
This small series introduces the necessary infrastructure to be able to
syncronize host and guest traces. The approach I'm following is a bit
biased since I tried to replicate the methods I've been using in the
past with x86.
This was tested on an Ampere Mt. Jade based machine.
---
Nicolas Saenz Julienne (2):
arm64/tracing: add cntvct based trace clock
KVM: arm64: export cntvoff in debugfs
arch/arm64/include/asm/kvm_host.h | 1 +
arch/arm64/include/asm/trace_clock.h | 12 ++++++++++++
arch/arm64/kernel/Makefile | 2 +-
arch/arm64/kernel/trace_clock.c | 12 ++++++++++++
arch/arm64/kvm/Makefile | 2 +-
arch/arm64/kvm/arch_timer.c | 2 +-
arch/arm64/kvm/debugfs.c | 25 +++++++++++++++++++++++++
include/kvm/arm_arch_timer.h | 3 +++
8 files changed, 56 insertions(+), 3 deletions(-)
create mode 100644 arch/arm64/include/asm/trace_clock.h
create mode 100644 arch/arm64/kernel/trace_clock.c
create mode 100644 arch/arm64/kvm/debugfs.c
--
2.33.1
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