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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 158E2C76188 for ; Mon, 22 Jul 2019 09:25:02 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 8E7AE21E6B for ; Mon, 22 Jul 2019 09:25:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="lWwY1OZQ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8E7AE21E6B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45sbmV5B2vzDqJ2 for ; Mon, 22 Jul 2019 19:24:58 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=none (mailfrom) smtp.mailfrom=bombadil.srs.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=batv+8b691fc55bcfc6b3008b+5811+infradead.org+hch@bombadil.srs.infradead.org; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=infradead.org header.i=@infradead.org header.b="lWwY1OZQ"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45sbkQ6sZlzDqHn for ; Mon, 22 Jul 2019 19:23:09 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=pOTBY6AtVEUDX9/NDgELbMsFV/6Jx30XrIPuhDqSF1M=; b=lWwY1OZQ6NlBZRVOwRFqOAU9R e/Wv3qaaZxGg0hcOW/WhwAB+OGdI1MFapTX6SQwKdijL3BmjRFZ7Y55cAWLc7ed4OyCdDzaKkw5aG +quVEzCfekBv3Q/ZFCrN8PWNtfra7RWxIRPdhZXUJiNgeqvueXW6kHYuUzVrzw+jcFUgqEAqERC9E mKjkbwbuIFGWYddiLBTWFVPLmCqCLWcJObR5FOb9ryVT0MaQqv6jZScC4PK2mM5HQZX/l79kgyjlY RgwHX8IThrH/IunfsEU9DkcbqiSNLMCrqKVt6z1R2sp+y1CIhLohdlLa9Is5f3o5YJoMik1wI9SFM kVhRIUJ0w==; Received: from hch by bombadil.infradead.org with local (Exim 4.92 #3 (Red Hat Linux)) id 1hpUXC-0006xE-OD; Mon, 22 Jul 2019 09:23:06 +0000 Date: Mon, 22 Jul 2019 02:23:06 -0700 From: Christoph Hellwig To: Alexey Kardashevskiy Subject: Re: question on "powerpc/pseries/dma: Allow SWIOTLB" Message-ID: <20190722092306.GA12167@infradead.org> References: <20190719071014.GA1922@infradead.org> <0f969485-a3fe-4436-a448-5f4c4f875cb2@ozlabs.ru> <20190719075348.GA2892@infradead.org> <33ba562c-1a87-58e2-4105-520834d5b969@ozlabs.ru> <20190719080532.GA3861@infradead.org> <14c9591a-5c8d-12a5-ed25-b7a41e0b1ad7@ozlabs.ru> <20190719122518.GA18682@infradead.org> <5c38b824-f703-bf97-3752-0f315b79b5a7@ozlabs.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5c38b824-f703-bf97-3752-0f315b79b5a7@ozlabs.ru> User-Agent: Mutt/1.11.4 (2019-03-13) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Christoph Hellwig , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Sat, Jul 20, 2019 at 09:22:49PM +1000, Alexey Kardashevskiy wrote: > > > On 19/07/2019 22:25, Christoph Hellwig wrote: > > On Fri, Jul 19, 2019 at 06:23:59PM +1000, Alexey Kardashevskiy wrote: > >> It is getting there and I still do not see why "swiotlb=force" should not > >> work if chosed in the cmdline. > > > > Ok, makes sense. But that means we also have the issue in a few > > other places.. > > Hmm, where? I got broadcom ethernet working with this. In all the other IOMMU drivers that conditionally forward to the dma direct ops. So it shouldn't affect powerpc.