From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758365AbdLRLh1 (ORCPT ); Mon, 18 Dec 2017 06:37:27 -0500 Received: from mail.skyhub.de ([5.9.137.197]:57820 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750813AbdLRLh0 (ORCPT ); Mon, 18 Dec 2017 06:37:26 -0500 From: Borislav Petkov To: X86 ML Cc: LKML Subject: [PATCH tip:ras/core 1/3] x86/MCE/AMD: Define a function to get SMCA bank type Date: Mon, 18 Dec 2017 12:37:12 +0100 Message-Id: <20171218113714.1456-1-bp@alien8.de> X-Mailer: git-send-email 2.13.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yazen Ghannam Scalable MCA systems have various types of banks. The bank's type can determine how we handle errors from it. For example, if a bank represents a UMC (Unified Memory Controller) then we will need to convert its address from a normalized address to a system physical address before handling the error. Signed-off-by: Yazen Ghannam Cc: Tony Luck Cc: linux-edac Cc: x86-ml Link: http://lkml.kernel.org/r/20171207203955.118171-1-Yazen.Ghannam@amd.com [ Verify m->bank is within range and use bank pointer. ] Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/mcheck/mce_amd.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/x86/kernel/cpu/mcheck/mce_amd.c b/arch/x86/kernel/cpu/mcheck/mce_amd.c index a38ab1fa53a2..661c4738be27 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_amd.c +++ b/arch/x86/kernel/cpu/mcheck/mce_amd.c @@ -110,6 +110,20 @@ const char *smca_get_long_name(enum smca_bank_types t) } EXPORT_SYMBOL_GPL(smca_get_long_name); +static enum smca_bank_types smca_get_bank_type(struct mce *m) +{ + struct smca_bank *b; + + if (m->bank >= N_SMCA_BANK_TYPES) + return N_SMCA_BANK_TYPES; + + b = &smca_banks[m->bank]; + if (!b->hwid) + return N_SMCA_BANK_TYPES; + + return b->hwid->bank_type; +} + static struct smca_hwid smca_hwid_mcatypes[] = { /* { bank_type, hwid_mcatype, xec_bitmap } */ -- 2.13.0