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Date: Tue, 1 Sep 2020 18:41:12 +0200 From: Helge Deller <deller@....de> To: James Bottomley <James.Bottomley@...senPartnership.com>, Matthew Wilcox <willy@...radead.org> Cc: Christoph Hellwig <hch@....de>, Mauro Carvalho Chehab <mchehab@...nel.org>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Joonyoung Shim <jy0922.shim@...sung.com>, Seung-Woo Kim <sw0312.kim@...sung.com>, Kyungmin Park <kyungmin.park@...sung.com>, Ben Skeggs <bskeggs@...hat.com>, Pawel Osciak <pawel@...iak.com>, Marek Szyprowski <m.szyprowski@...sung.com>, Matt Porter <mporter@...nel.crashing.org>, iommu@...ts.linux-foundation.org, Tom Lendacky <thomas.lendacky@....com>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, linux-media@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-ia64@...r.kernel.org, linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org, linux-samsung-soc@...r.kernel.org, nouveau@...ts.freedesktop.org, netdev@...r.kernel.org, linux-nvme@...ts.infradead.org, linux-scsi@...r.kernel.org, linux-mm@...ck.org, alsa-devel@...a-project.org Subject: Re: [PATCH 07/28] 53c700: improve non-coherent DMA handling On 01.09.20 18:21, Helge Deller wrote: > 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 This tree boots nicely (up to a command prompt with i82596 nic working): 53c700: Version 2.8 By James.Bottomley@...senPartnership.com scsi0: 53c710 rev 2 scsi host0: LASI SCSI 53c700 scsi 0:0:6:0: Direct-Access QUANTUM FIREBALL_TM3200S 300X PQ: 0 ANSI: 2 scsi target0:0:6: Beginning Domain Validation scsi 0:0:6:0: tag#56 Enabling Tag Command Queuing scsi target0:0:6: asynchronous scsi target0:0:6: FAST-10 SCSI 10.0 MB/s ST (100 ns, offset 8) scsi target0:0:6: Domain Validation skipping write tests scsi target0:0:6: Ending Domain Validation scsi 0:0:6:1: tag#63 Disabling Tag Command Queuing st: Version 20160209, fixed bufsize 32768, s/g segs 256 sd 0:0:6:0: Power-on or device reset occurred sd 0:0:6:0: Attached scsi generic sg0 type 0 LASI 82596 driver - Revision: 1.30 Found i82596 at 0xf0107000, IRQ 17 eth0: 82596 at 0xf0107000, 08:00:09:c2:9e:60 IRQ 17. sd 0:0:6:0: [sda] 6281856 512-byte logical blocks: (3.22 GB/3.00 GiB) sd 0:0:6:0: [sda] Write Protect is off Christoph, you may add a Tested-by: Helge Deller <deller@....de> # parisc to the series. Helge
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