[PATCH 0/2] Add missing trace points in emulator path

From: "Hou Wenlong" <houwenlong.hwl@antgroup.com>
To: kvm@vger.kernel.org
Subject: [PATCH 0/2] Add missing trace points in emulator path
Date: Thu, 28 Jul 2022 16:25:03 +0800	[thread overview]
Message-ID: <cover.1658913543.git.houwenlong.hwl@antgroup.com> (raw)

Some existed trace points are missing in emulator path, e.g.,
RDMSR/WRMSR emulation and CR read/write emulation. However,
if add those trace points in emulator common interfaces in
arch/x86/kvm/x86.c, other instruction emulation may use those
interfaces too and cause too much trace records. But add those
trace points in em_* functions in arch/x86/kvm/emulate.c seems
to be ugly. Luckily, RDMSR/WRMSR emulation uses a sepreate
interface, so add trace points for RDMSR/WRMSR in emulator
path is acceptable like normal path.

Hou Wenlong (2):
  KVM: x86: Return emulator error if RDMSR/WRMSR emulation failed
  KVM: x86: Add missing trace points for RDMSR/WRMSR in emulator path

 arch/x86/kvm/x86.c | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

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2.31.1