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=-12.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 12565C433E7 for ; Tue, 1 Sep 2020 16:23:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DECB02098B for ; Tue, 1 Sep 2020 16:23:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=gmx.net header.i=@gmx.net header.b="fFtlmKxv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731112AbgIAQXX (ORCPT ); Tue, 1 Sep 2020 12:23:23 -0400 Received: from mout.gmx.net ([212.227.15.19]:50421 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729309AbgIAQXN (ORCPT ); Tue, 1 Sep 2020 12:23:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1598977327; bh=VcT1PIqQZcXCFi4aQmXr+rx2ZuYJ73wnhTYMW8H7+PU=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=fFtlmKxv2Y+p2huMqlURIGwCnY+YHR3OxCrqTmR7/c09gtEsmBQajpEBeWdzANXQU nOtwsOvykJoSrphCQY3l60MBSUuF98AeyYjUWc4soGvag+zKXapN25SAOhCuREYuas If9yS7veEqLQYXu1KBoCsQbtBSPXTizjivA2Vmz0= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.20.60] ([92.116.187.2]) by mail.gmx.com (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MK3W0-1jrdNg3lmA-00LUav; Tue, 01 Sep 2020 18:22:07 +0200 Subject: Re: [PATCH 07/28] 53c700: improve non-coherent DMA handling To: James Bottomley , Matthew Wilcox Cc: Christoph Hellwig , Mauro Carvalho Chehab , Thomas Bogendoerfer , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Ben Skeggs , Pawel Osciak , Marek Szyprowski , Matt Porter , iommu@lists.linux-foundation.org, Tom Lendacky , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-samsung-soc@vger.kernel.org, nouveau@lists.freedesktop.org, netdev@vger.kernel.org, linux-nvme@lists.infradead.org, linux-scsi@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org References: <20200819065555.1802761-1-hch@lst.de> <20200819065555.1802761-8-hch@lst.de> <1598971960.4238.5.camel@HansenPartnership.com> <20200901150554.GN14765@casper.infradead.org> <1598973776.4238.11.camel@HansenPartnership.com> From: Helge Deller Autocrypt: addr=deller@gmx.de; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <1598973776.4238.11.camel@HansenPartnership.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:ZB4M5bHJm2lT0eoLHk37MoNKcSKNbWnO0I+HozfOxJD3VBajWa/ 2YmeAFUi9NWtJ+BwUk/HUg0wTP7BOmNOnQ/gn+knEGQKbwqDbO3XJTfcv99kwA2MdYWpTg/ OELXP8GWQ4gUfymXUhK/7WblA+uNciI9f2zTsxEcsgOFoyBI0fFfIrl3FCp9IVjo9r0WPlF dWbroS2KiZXHO835wd86Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:M4PZy0wxx2o=:CpsZCDcX0hTdkQnvx3IlKn GAUEQQNQ7kNtc917PGYWcbYooCkewvBFUfOy/DpMNfcN1K/TM2fQAhdlJz7pYCkHO94Fhq0gN ZgVHlpHuuqpj8B5dFc4RwNGyns9gvuyn6faJpEloMlGsraJXmxZCyEnWCI5zHgavwNmb9mrnM y2nWJN2L462idmrD18bFjqWCzYo3Mg/qjoCLQKn1pmFcctArxevyCDPcvyZdmsC6TJ7euxSyv ykFbq7WOOa2ZPdD0c+OBjlGQjFs18FuwEQ+oB7yw3KHbifQZqL94RPmG9LUHK60WQ5Cm+v1su AUonzRplXMtNsj0tbKoZ3XaL0Ji6dXXTAMwd4GNQzTo8sm5fUmEpNrGOT90Rei1b2axNj4mpv WzoTUIC74wYe2spAtIwvNMszcn8GfQCIL41q9UP7Ae1V7PioT1UQF7F1IZ7sxz63/dMqkKq77 OVuCGhdZcTR6olpfCKP53X1ycW6molAI9F/mL4o1AIpYYYsr3Fi/ZHqtCBPTexmg9kedSbJKw Rphuwf8SoVT6qY+BsTFgOWeEj8Q6Uot5TFJ92NHahXyqcP5YFytIa8q0WB0jkCrAW88Dj7hMI 9V7zr8sJfQEIA8jnpy+xYazCGSBiyboARJyXc1q/7azwarcFqQfND0eshCJoT/9XOhEKBk4Fn 2Sj8bAW4K964PSpgSQAwjPQwknsqdtqA2QH9RfbiKdsXjWIYIALSzWJKl2yIv/VUU4KA298xq HNBYBnkFRxBsU2ILxR8zNOz36tvXvcLPHSg5DRRP7B+3C0dy81S346dnAoAVmK0DjPCXOpp67 Lm2w80/SRje5NzG1jnygwmyNxiyaQ3kfttEXfCtwoGpgVifyhvaY80skP2iz1KLDBGS6HKB18 BOCOBRn/deUeVee+0rc/42aFMsNRvtruHMinehuGBfqk2ou1BkKCptlWOck2S0RSxe47/AI5Y wnkVTwtC+iNIlU0W82GouYyLkqh55gUsh2gJvnmTvSvGwk7ArUABCJCOOnxDU5WuX3Si22AL1 O6N/9k9J4HrnnTwOaecHKSa8k1wQdPBkKviAg1ct9KW47XyZYBDP42txCUV7IZzT6JP5J67tN fBdJsKU/eqipSYf4M1IfwBiE8o/h/Pcu4RKFAyIWtX7C8sFVGVyAkyY+klHrPFf+PnMGclPI7 TDcPzNnXJQWLXNXIXHJso8DdEEU5NjEbmgcWh0RN7oBxOANTZWQ4aXOfNt5dhZsXHjR7bzg7E twgqH/LFHU56Rgmij Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org On 01.09.20 17:22, James Bottomley wrote: > On Tue, 2020-09-01 at 16:05 +0100, Matthew Wilcox wrote: >> On Tue, Sep 01, 2020 at 07:52:40AM -0700, James Bottomley wrote: >>> I think this looks mostly OK, except for one misnamed parameter >>> below. Unfortunately, the last non-coherent parisc was the 700 >>> series and I no longer own a box, so I can't test that part of it >>> (I can fire up the C360 to test it on a coherent arch). >> >> I have a 715/50 that probably hasn't been powered on in 15 years if >> you need something that old to test on (I believe the 725/100 uses >> the 7100LC and so is coherent). I'll need to set up a cross-compiler >> ... > > I'm not going to say no to actual testing, but it's going to be a world > of pain getting something so old going. I do have a box of older > systems I keep for architectural testing that I need to rummage around > in ... I just have a vague memory that my 715 actually caught fire a > decade ago and had to be disposed of. I still have a zoo of machines running for such testing, including a 715/64 and two 730. I'm going to test this git tree on the 715/64: git://git.infradead.org/users/hch/misc.git dma_alloc_pages Helge