Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752745AbbGRSEY (ORCPT ); Sat, 18 Jul 2015 14:04:24 -0400 Received: from mga11.intel.com ([192.55.52.93]:50127 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752596AbbGRSEX convert rfc822-to-8bit (ORCPT ); Sat, 18 Jul 2015 14:04:23 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.15,499,1432623600"; d="scan'208";a="731368430" From: "Dixit, Ashutosh" To: "'Toshi Kani'" , "linux-kernel@vger.kernel.org" CC: "Dutt, Sudeep" , "Rao, Nikhil" , "Williams, Dan J" Subject: Regression in v4.2-rc1: vmalloc_to_page with ioremap Thread-Topic: Regression in v4.2-rc1: vmalloc_to_page with ioremap Thread-Index: AdDBg6sE58TZZr6USUGr8VaqMd033A== Date: Sat, 18 Jul 2015 18:04:21 +0000 Message-ID: <6DC2528F945B4149AB6566DFB5F22ED39BC5540B@ORSMSX115.amr.corp.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.22.254.139] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 654 Lines: 15 vmalloc_to_page with ioremap'd memory used to work correctly till v4.1. In v4.2-rc1 when ioremap is done using huge pages vmalloc_to_page on ioremap'd memory crashes. Are there plans to fix this? An example of the use of vmalloc_to_page with ioremap is in the Intel MIC SCIF driver (drivers/misc/mic/scif/scif_nodeqp.c) which dma map's the ioremap'd range of one device to a second device. Thanks, Ashutosh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/