From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753799AbdFMQ3o (ORCPT ); Tue, 13 Jun 2017 12:29:44 -0400 Received: from mail.skyhub.de ([5.9.137.197]:35136 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753579AbdFMQ26 (ORCPT ); Tue, 13 Jun 2017 12:28:58 -0400 From: Borislav Petkov To: X86 ML Cc: LKML Subject: [PATCH 6/8] x86/mce/mce-inject: Preset the MCE injection struct Date: Tue, 13 Jun 2017 18:28:33 +0200 Message-Id: <20170613162835.30750-7-bp@alien8.de> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170613162835.30750-1-bp@alien8.de> References: <20170613162835.30750-1-bp@alien8.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov Populate the MCE injection struct before doing initial injection so that values which don't change have sane defaults. Signed-off-by: Borislav Petkov Acked-by: Yazen Ghannam Tested-by: Yazen Ghannam --- arch/x86/kernel/cpu/mcheck/mce-inject.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/x86/kernel/cpu/mcheck/mce-inject.c b/arch/x86/kernel/cpu/mcheck/mce-inject.c index 00af8dd8fc59..231ad23b24a9 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-inject.c +++ b/arch/x86/kernel/cpu/mcheck/mce-inject.c @@ -103,6 +103,13 @@ DEFINE_SIMPLE_ATTRIBUTE(misc_fops, inj_misc_get, inj_misc_set, "%llx\n"); DEFINE_SIMPLE_ATTRIBUTE(addr_fops, inj_addr_get, inj_addr_set, "%llx\n"); DEFINE_SIMPLE_ATTRIBUTE(synd_fops, inj_synd_get, inj_synd_set, "%llx\n"); +static void setup_inj_struct(struct mce *m) +{ + memset(m, 0, sizeof(struct mce)); + + m->cpuvendor = boot_cpu_data.x86_vendor; +} + /* Update fake mce registers on current CPU. */ static void inject_mce(struct mce *m) { @@ -700,6 +707,8 @@ static int __init inject_init(void) register_nmi_handler(NMI_LOCAL, mce_raise_notify, 0, "mce_notify"); mce_register_injector_chain(&inject_nb); + setup_inj_struct(&i_mce); + pr_info("Machine check injector initialized\n"); return 0; -- 2.13.0