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a=rsa-sha256; c=simple/simple; d=hansenpartnership.com; s=20151216; t=1598973779; bh=oM6M8l0ba8Kwr86wVvWOr0ibc9GeoVF02RI3gdpRvZg=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=UvqMRf/V4bYGUnXRFYzHR0MoWszTvt72MUDJlkPgLVL7Z5C9ghIwUJJ5HYM5kfJ3n 5VYFPt986TvN+zbqjMT6pkl+t9bvzRZjP81gXVEMiUig/anUDkmm0cM9tI1gLXtLCF UIwKWRUmpM4JixpLzQm9dVgj9tnlX6pm+UJWHqoc= Received: from bedivere.hansenpartnership.com ([127.0.0.1]) by localhost (bedivere.hansenpartnership.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id U-JPs2CIcW43; Tue, 1 Sep 2020 08:22:58 -0700 (PDT) Received: from [153.66.254.174] (c-73-35-198-56.hsd1.wa.comcast.net [73.35.198.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by bedivere.hansenpartnership.com (Postfix) with ESMTPSA id 8B8B18EE0F5; Tue, 1 Sep 2020 08:22:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=hansenpartnership.com; s=20151216; t=1598973778; bh=oM6M8l0ba8Kwr86wVvWOr0ibc9GeoVF02RI3gdpRvZg=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=QlglmDYfmn+LUmPHNl9G1vxZ4WANgTGEDBcv3VoTq5jkCobGzHRwV7MDXP/8CkPRF DlnAvyJzmngr5D0/wC86DqyXRPVdp/OwUQc4zsVd3Mrk54apOxtDVbGKnBnOuqrFqS /e8+ps58Vp9230FkQlqzYQQbltdvuVP33ee7Vxcw= Message-ID: <1598973776.4238.11.camel@HansenPartnership.com> Subject: Re: [PATCH 07/28] 53c700: improve non-coherent DMA handling From: James Bottomley To: Matthew Wilcox Date: Tue, 01 Sep 2020 08:22:56 -0700 In-Reply-To: <20200901150554.GN14765@casper.infradead.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> X-Mailer: Evolution 3.26.6 Mime-Version: 1.0 Cc: alsa-devel@alsa-project.org, linux-ia64@vger.kernel.org, linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig , linux-samsung-soc@vger.kernel.org, Joonyoung Shim , linux-scsi@vger.kernel.org, Kyungmin Park , Ben Skeggs , Matt Porter , linux-media@vger.kernel.org, Tom Lendacky , Pawel Osciak , Mauro Carvalho Chehab , linux-arm-kernel@lists.infradead.org, Thomas Bogendoerfer , linux-parisc@vger.kernel.org, netdev@vger.kernel.org, Seung-Woo Kim , linux-mips@vger.kernel.org, iommu@lists.linux-foundation.org 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, 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. James _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu