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=-15.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,INCLUDES_PULL_REQUEST, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=unavailable 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 A1D42C2D0D3 for ; Sat, 21 Dec 2019 09:24:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7C49521927 for ; Sat, 21 Dec 2019 09:24:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726115AbfLUJYG (ORCPT ); Sat, 21 Dec 2019 04:24:06 -0500 Received: from mx2.suse.de ([195.135.220.15]:55324 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725845AbfLUJYG (ORCPT ); Sat, 21 Dec 2019 04:24:06 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 60011AC23; Sat, 21 Dec 2019 09:24:04 +0000 (UTC) Date: Sat, 21 Dec 2019 10:23:53 +0100 From: Borislav Petkov To: Linus Torvalds Cc: linux-edac , lkml Subject: [GIT PULL] RAS urgent for 5.5 Message-ID: <20191221092353.GA5832@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Linus, please pull three urgent RAS fixes for the AMD side of things: - initialize struct mce.bank so that calculated error severity on AMD SMCA machines is correct - do not send IPIs early during bank initialization, when interrupts are disabled - a fix for when only a subset of MCA banks are enabled, which led to boot hangs on some new AMD CPUs. Thx. --- The following changes since commit e42617b825f8073569da76dc4510bfa019b1c35a: Linux 5.5-rc1 (2019-12-08 14:57:55 -0800) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ras-urgent-for-linus for you to fetch changes up to a3a57ddad061acc90bef39635caf2b2330ce8f21: x86/mce: Fix possibly incorrect severity calculation on AMD (2019-12-17 09:39:53 +0100) ---------------------------------------------------------------- Jan H. Schönherr (1): x86/mce: Fix possibly incorrect severity calculation on AMD Konstantin Khlebnikov (1): x86/MCE/AMD: Do not use rdmsr_safe_on_cpu() in smca_configure() Yazen Ghannam (1): x86/MCE/AMD: Allow Reserved types to be overwritten in smca_banks[] arch/x86/kernel/cpu/mce/amd.c | 4 ++-- arch/x86/kernel/cpu/mce/core.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/mce/amd.c b/arch/x86/kernel/cpu/mce/amd.c index 5167bd2bb6b1..d6cf5c18a7e0 100644 --- a/arch/x86/kernel/cpu/mce/amd.c +++ b/arch/x86/kernel/cpu/mce/amd.c @@ -266,10 +266,10 @@ static void smca_configure(unsigned int bank, unsigned int cpu) smca_set_misc_banks_map(bank, cpu); /* Return early if this bank was already initialized. */ - if (smca_banks[bank].hwid) + if (smca_banks[bank].hwid && smca_banks[bank].hwid->hwid_mcatype != 0) return; - if (rdmsr_safe_on_cpu(cpu, MSR_AMD64_SMCA_MCx_IPID(bank), &low, &high)) { + if (rdmsr_safe(MSR_AMD64_SMCA_MCx_IPID(bank), &low, &high)) { pr_warn("Failed to read MCA_IPID for bank %d\n", bank); return; } diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 5f42f25bac8f..2e2a421c8528 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -819,8 +819,8 @@ static int mce_no_way_out(struct mce *m, char **msg, unsigned long *validp, if (quirk_no_way_out) quirk_no_way_out(i, m, regs); + m->bank = i; if (mce_severity(m, mca_cfg.tolerant, &tmp, true) >= MCE_PANIC_SEVERITY) { - m->bank = i; mce_read_aux(m, i); *msg = tmp; return 1; -- Regards/Gruss, Boris. SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg