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From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>,
	LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 0/3] x86/MSR: Add a MSR write callback
Date: Wed, 10 Jun 2020 13:00:34 +0200	[thread overview]
Message-ID: <20200610110037.11853-1-bp@alien8.de> (raw)

From: Borislav Petkov <bp@suse.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


             reply	other threads:[~2020-06-10 11:00 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-10 11:00 Borislav Petkov [this message]
2020-06-10 11:00 ` [PATCH 1/3] x86/msr: Pass a single MSR value to __rwmsr_on_cpus() too Borislav Petkov
2020-06-10 11:00 ` [PATCH 2/3] x86/msr: Add wrmsrl_val_on_cpus() Borislav Petkov
2020-06-10 11:00 ` [PATCH 3/3] x86/msr: Add an MSR write callback Borislav Petkov
2020-06-10 12:32   ` Peter Zijlstra
2020-06-10 13:21     ` Borislav Petkov
2020-06-10 14:01       ` Peter Zijlstra

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