From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31BBEC433E0 for ; Wed, 10 Jun 2020 11:00:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D1C6207C3 for ; Wed, 10 Jun 2020 11:00:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="XVuMF96i" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728384AbgFJLAt (ORCPT ); Wed, 10 Jun 2020 07:00:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59456 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728264AbgFJLAt (ORCPT ); Wed, 10 Jun 2020 07:00:49 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D940FC03E96B for ; Wed, 10 Jun 2020 04:00:48 -0700 (PDT) Received: from zn.tnic (p200300ec2f0c190029f750dc462a5b02.dip0.t-ipconnect.de [IPv6:2003:ec:2f0c:1900:29f7:50dc:462a:5b02]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 3BBD31EC0288; Wed, 10 Jun 2020 13:00:47 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1591786847; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type: content-transfer-encoding:content-transfer-encoding:in-reply-to: references; bh=u+yseAhSTuL9WNs4t9gjGaAfWzuvxDaGplm92riYglo=; b=XVuMF96ivnB/pJ0ZbhkJtJWrrdjumCWI0947ZFo2Xlzk2DMBIuLXWV287++m23gyMVUHsg deVOziwCEEsYbY8p0W0/8PMHTIVKeK+AuXmu8xI36hF1PNbzfXxdtEyk0KBzPdbBNJicME DG6ianVVbqqs3NmXp/7EiJCxOncMiFY= From: Borislav Petkov To: X86 ML Cc: Tom Lendacky , LKML Subject: [PATCH 0/3] x86/MSR: Add a MSR write callback Date: Wed, 10 Jun 2020 13:00:34 +0200 Message-Id: <20200610110037.11853-1-bp@alien8.de> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov 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