linux-kernel - [PATCH 0/3] x86/MSR: Add a MSR write callback

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Date:   Wed, 10 Jun 2020 13:00:34 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     X86 ML <x86@...nel.org>
Cc:     Tom Lendacky <thomas.lendacky@....com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/3] x86/MSR: Add a MSR write callback

From: Borislav Petkov <bp@...e.de>

Hi all,

here's a small set which adds a callback to execute when a MSR is
written. Patch 3 explains the need for it.

Thx.

Borislav Petkov (3):
  x86/msr: Pass a single MSR value to __rwmsr_on_cpus() too
  x86/msr: Add wrmsrl_val_on_cpus()
  x86/msr: Add an MSR write callback

 arch/x86/include/asm/msr.h   | 10 ++++++++++
 arch/x86/kernel/cpu/bugs.c   |  2 +-
 arch/x86/kernel/cpu/common.c | 31 +++++++++++++++++++++++++++++++
 arch/x86/kernel/msr.c        |  3 +++
 arch/x86/lib/msr-smp.c       | 26 +++++++++++++++++++++++---
 5 files changed, 68 insertions(+), 4 deletions(-)

-- 
2.21.0