From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp09.au.ibm.com (e23smtp09.au.ibm.com [202.81.31.142]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id A7A7D1400CB for ; Fri, 9 May 2014 17:49:49 +1000 (EST) Received: from /spool/local by e23smtp09.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 9 May 2014 17:49:49 +1000 Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [9.190.235.21]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 9E9CC3578047 for ; Fri, 9 May 2014 17:49:47 +1000 (EST) Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s497nW1q9634210 for ; Fri, 9 May 2014 17:49:32 +1000 Received: from d23av04.au.ibm.com (localhost [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s497nkAw021269 for ; Fri, 9 May 2014 17:49:47 +1000 From: Gavin Shan To: linuxppc-dev@lists.ozlabs.org, kvm-ppc@vger.kernel.org Subject: [PATCH 06/10] powerpc/eeh: Avoid event on passed PE Date: Fri, 9 May 2014 17:49:38 +1000 Message-Id: <1399621782-23281-7-git-send-email-gwshan@linux.vnet.ibm.com> In-Reply-To: <1399621782-23281-1-git-send-email-gwshan@linux.vnet.ibm.com> References: <1399621782-23281-1-git-send-email-gwshan@linux.vnet.ibm.com> Cc: aik@ozlabs.ru, alex.williamson@redhat.com, qiudayu@linux.vnet.ibm.com, Gavin Shan List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , If we detects frozen state on PE that has been passed to guest, we needn't handle it. Instead, we rely on the guest to detect and recover it. The patch avoid EEH event on the frozen passed PE so that the guest can have chance to handle that. Signed-off-by: Gavin Shan --- arch/powerpc/kernel/eeh.c | 8 ++++++++ arch/powerpc/platforms/powernv/eeh-ioda.c | 3 ++- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/eeh.c b/arch/powerpc/kernel/eeh.c index 9c6b899..6543f05 100644 --- a/arch/powerpc/kernel/eeh.c +++ b/arch/powerpc/kernel/eeh.c @@ -400,6 +400,14 @@ int eeh_dev_check_failure(struct eeh_dev *edev) if (ret > 0) return ret; + /* + * If the PE has been passed to guest, we won't check the + * state. Instead, let the guest handle it if the PE has + * been frozen. + */ + if (eeh_pe_passed(pe)) + return 0; + /* If we already have a pending isolation event for this * slot, we know it's bad already, we don't need to check. * Do this checking under a lock; as multiple PCI devices diff --git a/arch/powerpc/platforms/powernv/eeh-ioda.c b/arch/powerpc/platforms/powernv/eeh-ioda.c index 1b5982f..03a3ed2 100644 --- a/arch/powerpc/platforms/powernv/eeh-ioda.c +++ b/arch/powerpc/platforms/powernv/eeh-ioda.c @@ -890,7 +890,8 @@ static int ioda_eeh_next_error(struct eeh_pe **pe) opal_pci_eeh_freeze_clear(phb->opal_id, frozen_pe_no, OPAL_EEH_ACTION_CLEAR_FREEZE_ALL); ret = EEH_NEXT_ERR_NONE; - } else if ((*pe)->state & EEH_PE_ISOLATED) { + } else if ((*pe)->state & EEH_PE_ISOLATED || + eeh_pe_passed(*pe)) { ret = EEH_NEXT_ERR_NONE; } else { pr_err("EEH: Frozen PHB#%x-PE#%x (%s) detected\n", -- 1.8.3.2