From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id AAC30A04E0; Thu, 28 Nov 2019 12:05:21 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 7FE4E2B96; Thu, 28 Nov 2019 12:05:21 +0100 (CET) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by dpdk.org (Postfix) with ESMTP id ABBB4293C for ; Thu, 28 Nov 2019 12:05:18 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Nov 2019 03:05:17 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,253,1571727600"; d="scan'208";a="410660179" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.96]) ([10.237.221.96]) by fmsmga006.fm.intel.com with ESMTP; 28 Nov 2019 03:05:15 -0800 To: David Marchand , Andrew Rybchenko Cc: Vamsi Attunuru , Jerin Jacob , John McNamara , Marko Kovacevic , dev , Kiran Kumar K , Igor Ryzhov , Thomas Monjalon References: <20191120160009.46270-1-ferruh.yigit@intel.com> <20191120172227.42798-1-ferruh.yigit@intel.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v2] kni: increase kernel version requirement for VA X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On 11/28/2019 11:02 AM, David Marchand wrote: > On Thu, Nov 28, 2019 at 11:45 AM Andrew Rybchenko > wrote: >> >> On 11/21/19 1:30 AM, David Marchand wrote: >>> On Wed, Nov 20, 2019 at 6:28 PM David Marchand >>> wrote: >>>> On Wed, Nov 20, 2019 at 6:22 PM Ferruh Yigit wrote: >>>>> A build error reported related to the selected >>>>> 'get_user_pages_remote()' kernel API: >>>>> >>>>> .../kernel/linux/kni/kni_dev.h:113:8: >>>>> error: too few arguments to function ‘get_user_pages_remote’ >>>>> ret = get_user_pages_remote(tsk, tsk->mm, iova, 1 >>>>> ^~~~~~~~~~~~~~~~~~~~~ >>>>> >>>>> Currently there are three version of the 'get_user_pages_remote()' >>>>> supported, based on kernel version >>>>> < 4.9, = 4.9, > 4.9 >>>>> >>>>> These version based checks are not working fine with the distro kernels >>>>> which is the cause of reported build error. The error reported by the >>>>> kernel version 4.8, but it is using API defined in > 4.9. >>>>> >>>>> To be able to take control of this, and possible more, related build >>>>> error, increasing the minimum supported kernel version for iova=va with >>>>> KNI to kernel version 4.9. >>>>> >>>>> This leaves us with single version of the kernel API and more >>>>> manageable. >>>>> >>>>> Signed-off-by: Ferruh Yigit >>> Reviewed-by: David Marchand >>> >>> We need this change to fix compilation issues for -rc3. >>> Applied, thanks. >> >> The build is still broken on Debian 9 stretch which has Linux 4.9.189, >> but corresponding function still has no the last argument. >> It looks like requirements should be bumped to >=4.10.0. > > It came with: > 5b56d49fc31d - mm: add locked parameter to get_user_pages_remote() (2 > years, 11 months ago) > > $ git describe --contains 5b56d49fc31d > v4.10-rc1~110^2~56 > > The check on > 4.9.0 is wrong, it should be >= 4.10.0 yes. > > Thanks for details, let me do the patch.