From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D729FC432BE for ; Wed, 11 Aug 2021 13:34:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BC6F960FC0 for ; Wed, 11 Aug 2021 13:34:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231577AbhHKNe4 (ORCPT ); Wed, 11 Aug 2021 09:34:56 -0400 Received: from linux.microsoft.com ([13.77.154.182]:37796 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231176AbhHKNey (ORCPT ); Wed, 11 Aug 2021 09:34:54 -0400 Received: from sequoia (162-237-133-238.lightspeed.rcsntx.sbcglobal.net [162.237.133.238]) by linux.microsoft.com (Postfix) with ESMTPSA id C9C0720B36E8; Wed, 11 Aug 2021 06:34:29 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com C9C0720B36E8 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1628688870; bh=iJ8ub44l6VK5NjTbHxNb2jEQpC8aI8b5NdIRxFyGFkU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=BG30X4OIWWd5u0SY3cdFhu/9wSK3owQChOAptr/0exvCtCMUU6VloO0gHK6mpXqqb /g9gnyv7798xU/TkiW+Jqu2d4K0a+OAqxUc2AoGsr76GbvI252D4czK5KyH29i9wyl 5bAYKEifcOPoTaCWHrfauo8LE8XbD4Ygfc0Q7sQY= Date: Wed, 11 Aug 2021 08:34:27 -0500 From: Tyler Hicks To: Pavel Machek Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Sumit Garg , Jens Wiklander Subject: Re: [PATCH 4.19 36/54] tee: add tee_shm_alloc_kernel_buf() Message-ID: <20210811133427.GG5469@sequoia> References: <20210810172944.179901509@linuxfoundation.org> <20210810172945.369365872@linuxfoundation.org> <20210811072434.GB10829@duo.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210811072434.GB10829@duo.ucw.cz> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021-08-11 09:24:34, Pavel Machek wrote: > Hi! > > > commit dc7019b7d0e188d4093b34bd0747ed0d668c63bf upstream. > > > > Adds a new function tee_shm_alloc_kernel_buf() to allocate shared memory > > from a kernel driver. This function can later be made more lightweight > > by unnecessary dma-buf export. > > 5.10 contains follow-up patches actually using the export, but 4.19 > does not. I believe it should be dropped from 4.19. That's correct. Those follow-up patches that made use of this function were only needed back to 5.4. Tyler > > Best regards, > Pavel > -- > DENX Software Engineering GmbH, Managing Director: Wolfgang Denk > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany