From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3ttgdW52F5zDqHF for ; Wed, 4 Jan 2017 17:19:42 +1100 (AEDT) Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id v046IeRY032840 for ; Wed, 4 Jan 2017 01:19:40 -0500 Received: from e23smtp09.au.ibm.com (e23smtp09.au.ibm.com [202.81.31.142]) by mx0b-001b2d01.pphosted.com with ESMTP id 27rkvyqgkr-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 04 Jan 2017 01:19:40 -0500 Received: from localhost by e23smtp09.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 4 Jan 2017 16:19:37 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 456D02CE805A for ; Wed, 4 Jan 2017 17:19:35 +1100 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v046JZ4o7143900 for ; Wed, 4 Jan 2017 17:19:35 +1100 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v046JYwm027825 for ; Wed, 4 Jan 2017 17:19:35 +1100 From: Vaibhav Jain To: linuxppc-dev@lists.ozlabs.org Cc: Vaibhav Jain , frederic.barrat@fr.ibm.com, Andrew Donnellan , Ian Munsie , Christophe Lombard , Philippe Bergheaud , Gregory Kurz Subject: [RESEND] cxl: Force psl data-cache flush during device shutdown Date: Wed, 4 Jan 2017 11:48:52 +0530 Message-Id: <20170104061852.18512-1-vaibhav@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This change adds a force psl data cache flush during device shutdown callback. This should reduce a possibility of psl holding a dirty cache line while the CAPP is being reinitialized, which may result in a UE [load/store] machine check error. Signed-off-by: Vaibhav Jain --- Resend: Fixed the author ident. --- drivers/misc/cxl/pci.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c index 80a87ab..73432e7 100644 --- a/drivers/misc/cxl/pci.c +++ b/drivers/misc/cxl/pci.c @@ -1610,6 +1610,9 @@ static void cxl_pci_remove_adapter(struct cxl *adapter) cxl_sysfs_adapter_remove(adapter); cxl_debugfs_adapter_remove(adapter); + /* Flush adapter datacache as its about to be removed */ + cxl_data_cache_flush(adapter); + cxl_deconfigure_adapter(adapter); device_unregister(&adapter->dev); -- 2.9.3