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=-6.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 DEFFBC433E0 for ; Tue, 9 Feb 2021 10:55:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9EEC064E70 for ; Tue, 9 Feb 2021 10:55:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232161AbhBIKzK (ORCPT ); Tue, 9 Feb 2021 05:55:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:42276 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231886AbhBIKv4 (ORCPT ); Tue, 9 Feb 2021 05:51:56 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id A4BC464E4B; Tue, 9 Feb 2021 10:39:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1612867197; bh=/jh06s5G/k5IVhUW0yt0cXHDhlQpDXNonOEqGQ0F5qg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NvMFBEAJSBSoBgfeE00P1l46u1S3zR8ZgC92VkrGXNBZQuRkiv3FBf5/BWa3AU0l2 +Bcp0x149qDPwTIkgv9CTtwbxFBMuydrVT7JTYBcT2SpShOevWsbynTFEld/q+rWL7 +RbWKxPN1+fsK/BNEFqHZj5ruw1wX0KC4xxywqXU= Date: Tue, 9 Feb 2021 11:39:54 +0100 From: Greg KH To: obayashi.yoshimasa@socionext.com Cc: sumit.garg@linaro.org, hch@lst.de, m.szyprowski@samsung.com, robin.murphy@arm.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, daniel.thompson@linaro.org Subject: Re: DMA direct mapping fix for 5.4 and earlier stable branches Message-ID: References: <27bbe35deacb4ca49f31307f4ed551b5@SOC-EX02V.e01.socionext.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 09, 2021 at 10:19:07AM +0000, obayashi.yoshimasa@socionext.com wrote: > > How do you judge "mature"? > > My basic criteria are > * Function is exist, but bug fix is necessary: "mature" > * Function extension is necessary: "immature" > > > And again, if a feature isn't present in a specific kernel version, why would you think that it would be > > a viable solution for you to use? > > So, "a feature isn't present in a specific kernel version", > also means "immature" according to my criteria. Great, please use the 5.10 or newer kernel release then. thanks, greg k-h 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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 77D71C433E6 for ; Tue, 9 Feb 2021 10:40:04 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DEBAB64E6F for ; Tue, 9 Feb 2021 10:40:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DEBAB64E6F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 91225860F6; Tue, 9 Feb 2021 10:40:03 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id l3_dTlnwHANX; Tue, 9 Feb 2021 10:40:03 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 1C87885E98; Tue, 9 Feb 2021 10:40:03 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id E8441C0174; Tue, 9 Feb 2021 10:40:02 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1ED6BC013A for ; Tue, 9 Feb 2021 10:40:01 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 1AFFE85EBF for ; Tue, 9 Feb 2021 10:40:01 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id nHmnWfKo5dqf for ; Tue, 9 Feb 2021 10:39:57 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by fraxinus.osuosl.org (Postfix) with ESMTPS id CF32185E98 for ; Tue, 9 Feb 2021 10:39:57 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id A4BC464E4B; Tue, 9 Feb 2021 10:39:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1612867197; bh=/jh06s5G/k5IVhUW0yt0cXHDhlQpDXNonOEqGQ0F5qg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NvMFBEAJSBSoBgfeE00P1l46u1S3zR8ZgC92VkrGXNBZQuRkiv3FBf5/BWa3AU0l2 +Bcp0x149qDPwTIkgv9CTtwbxFBMuydrVT7JTYBcT2SpShOevWsbynTFEld/q+rWL7 +RbWKxPN1+fsK/BNEFqHZj5ruw1wX0KC4xxywqXU= Date: Tue, 9 Feb 2021 11:39:54 +0100 From: Greg KH To: obayashi.yoshimasa@socionext.com Subject: Re: DMA direct mapping fix for 5.4 and earlier stable branches Message-ID: References: <27bbe35deacb4ca49f31307f4ed551b5@SOC-EX02V.e01.socionext.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Cc: sumit.garg@linaro.org, daniel.thompson@linaro.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, iommu@lists.linux-foundation.org, robin.murphy@arm.com, hch@lst.de X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Tue, Feb 09, 2021 at 10:19:07AM +0000, obayashi.yoshimasa@socionext.com wrote: > > How do you judge "mature"? > > My basic criteria are > * Function is exist, but bug fix is necessary: "mature" > * Function extension is necessary: "immature" > > > And again, if a feature isn't present in a specific kernel version, why would you think that it would be > > a viable solution for you to use? > > So, "a feature isn't present in a specific kernel version", > also means "immature" according to my criteria. Great, please use the 5.10 or newer kernel release then. thanks, greg k-h _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu