From: Christoph Hellwig <hch@lst.de>
To: Christian Zigotzky <chzigotzky@xenosoft.de>
Cc: Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
linux-arch@vger.kernel.org, darren@stevens-zone.net,
mad skateman <madskateman@gmail.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
paulus@samba.org, rtd2@xtra.co.nz,
"contact@a-eon.com" <contact@a-eon.com>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
nsaenzjulienne@suse.de
Subject: Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M
Date: Thu, 21 Nov 2019 19:02:26 +0100 [thread overview]
Message-ID: <20191121180226.GA3852@lst.de> (raw)
In-Reply-To: <b3217742-2c0b-8447-c9ac-608b93265363@xenosoft.de>
On Thu, Nov 21, 2019 at 05:34:48PM +0100, Christian Zigotzky wrote:
> I modified the patch and compiled a new RC8 of kernel 5.4 today. (patch
> attached)
>
> We have to wait to Rolands test results with his SCSI PCI card. I tested it
> today but my TV card doesn't work with this patch.
I think we have two sorta overlapping issues here. One is that I think
we need the bus_dma_limit, which should mostly help for something like
a SCSI controller that doesn't need streaming mappings (btw, do we
have more details on that somewhere?).
And something weird with the videobuf things. Your change of the dma
masks suggests that the driver doesn't do the right allocations and thus
hits bounce buffering (swiotlb). We should fix that for real, but the
fact that the bounce buffering itself also fails is even more interesting.
Can you try this git branch:
git://git.infradead.org/users/hch/misc.git fsl-dma-debugging
Gitweb:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/fsl-dma-debugging
and send me the dmesg with that with your TV adapter?
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Christian Zigotzky <chzigotzky@xenosoft.de>
Cc: linux-arch@vger.kernel.org, darren@stevens-zone.net,
rtd2@xtra.co.nz, linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
paulus@samba.org, mad skateman <madskateman@gmail.com>,
"contact@a-eon.com" <contact@a-eon.com>,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
nsaenzjulienne@suse.de
Subject: Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M
Date: Thu, 21 Nov 2019 19:02:26 +0100 [thread overview]
Message-ID: <20191121180226.GA3852@lst.de> (raw)
In-Reply-To: <b3217742-2c0b-8447-c9ac-608b93265363@xenosoft.de>
On Thu, Nov 21, 2019 at 05:34:48PM +0100, Christian Zigotzky wrote:
> I modified the patch and compiled a new RC8 of kernel 5.4 today. (patch
> attached)
>
> We have to wait to Rolands test results with his SCSI PCI card. I tested it
> today but my TV card doesn't work with this patch.
I think we have two sorta overlapping issues here. One is that I think
we need the bus_dma_limit, which should mostly help for something like
a SCSI controller that doesn't need streaming mappings (btw, do we
have more details on that somewhere?).
And something weird with the videobuf things. Your change of the dma
masks suggests that the driver doesn't do the right allocations and thus
hits bounce buffering (swiotlb). We should fix that for real, but the
fact that the bounce buffering itself also fails is even more interesting.
Can you try this git branch:
git://git.infradead.org/users/hch/misc.git fsl-dma-debugging
Gitweb:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/fsl-dma-debugging
and send me the dmesg with that with your TV adapter?
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Christian Zigotzky <chzigotzky@xenosoft.de>
Cc: linux-arch@vger.kernel.org, darren@stevens-zone.net,
rtd2@xtra.co.nz,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
paulus@samba.org, mad skateman <madskateman@gmail.com>,
"contact@a-eon.com" <contact@a-eon.com>,
Robin Murphy <robin.murphy@arm.com>,
Christoph Hellwig <hch@lst.de>,
nsaenzjulienne@suse.de
Subject: Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M
Date: Thu, 21 Nov 2019 19:02:26 +0100 [thread overview]
Message-ID: <20191121180226.GA3852@lst.de> (raw)
In-Reply-To: <b3217742-2c0b-8447-c9ac-608b93265363@xenosoft.de>
On Thu, Nov 21, 2019 at 05:34:48PM +0100, Christian Zigotzky wrote:
> I modified the patch and compiled a new RC8 of kernel 5.4 today. (patch
> attached)
>
> We have to wait to Rolands test results with his SCSI PCI card. I tested it
> today but my TV card doesn't work with this patch.
I think we have two sorta overlapping issues here. One is that I think
we need the bus_dma_limit, which should mostly help for something like
a SCSI controller that doesn't need streaming mappings (btw, do we
have more details on that somewhere?).
And something weird with the videobuf things. Your change of the dma
masks suggests that the driver doesn't do the right allocations and thus
hits bounce buffering (swiotlb). We should fix that for real, but the
fact that the bounce buffering itself also fails is even more interesting.
Can you try this git branch:
git://git.infradead.org/users/hch/misc.git fsl-dma-debugging
Gitweb:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/fsl-dma-debugging
and send me the dmesg with that with your TV adapter?
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2019-11-21 18:02 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-16 7:06 Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M Christian Zigotzky
2019-11-16 7:06 ` Christian Zigotzky
2019-11-21 7:29 ` Christoph Hellwig
2019-11-21 7:29 ` Christoph Hellwig
2019-11-21 7:29 ` Christoph Hellwig
2019-11-21 12:16 ` Christian Zigotzky
2019-11-21 12:16 ` Christian Zigotzky
2019-11-21 12:16 ` Christian Zigotzky
2019-11-21 12:21 ` Christian Zigotzky
2019-11-21 12:21 ` Christian Zigotzky
2019-11-21 12:21 ` Christian Zigotzky
2019-11-21 13:33 ` Robin Murphy
2019-11-21 13:33 ` Robin Murphy
2019-11-21 13:33 ` Robin Murphy
2019-11-21 16:34 ` Christian Zigotzky
2019-11-21 16:34 ` Christian Zigotzky
2019-11-21 16:34 ` Christian Zigotzky
2019-11-21 18:02 ` Christoph Hellwig [this message]
2019-11-21 18:02 ` Christoph Hellwig
2019-11-21 18:02 ` Christoph Hellwig
2019-11-21 18:21 ` Christian Zigotzky
2019-11-21 18:21 ` Christian Zigotzky
2019-11-21 18:21 ` Christian Zigotzky
2019-11-23 11:42 ` Christian Zigotzky
2019-11-23 11:42 ` Christian Zigotzky
2019-11-23 11:42 ` Christian Zigotzky
2019-11-25 7:39 ` Christoph Hellwig
2019-11-25 7:39 ` Christoph Hellwig
2019-11-25 7:39 ` Christoph Hellwig
2019-11-25 9:32 ` Mike Rapoport
2019-11-25 9:32 ` Mike Rapoport
2019-11-25 9:32 ` Mike Rapoport
2019-11-25 9:32 ` Mike Rapoport
2019-11-25 9:32 ` Mike Rapoport
2019-11-25 16:38 ` Christian Zigotzky
2019-11-25 16:38 ` Christian Zigotzky
2019-11-25 16:38 ` Christian Zigotzky
2019-11-26 11:57 ` Christian Zigotzky
2019-11-26 11:57 ` Christian Zigotzky
2019-11-26 11:57 ` Christian Zigotzky
2019-11-25 16:36 ` Christian Zigotzky
2019-11-25 16:36 ` Christian Zigotzky
2019-11-25 16:36 ` Christian Zigotzky
2019-11-26 11:26 ` Christian Zigotzky
2019-11-26 11:26 ` Christian Zigotzky
2019-11-26 11:26 ` Christian Zigotzky
2019-11-26 16:40 ` Christoph Hellwig
2019-11-26 16:40 ` Christoph Hellwig
2019-11-26 16:40 ` Christoph Hellwig
2019-11-27 6:56 ` Mike Rapoport
2019-11-27 6:56 ` Mike Rapoport
2019-11-27 6:56 ` Mike Rapoport
2019-11-27 6:56 ` Mike Rapoport
2019-11-27 8:53 ` Christoph Hellwig
2019-11-27 8:53 ` Christoph Hellwig
2019-11-27 8:53 ` Christoph Hellwig
2019-11-27 15:14 ` Christian Zigotzky
2019-11-27 15:14 ` Christian Zigotzky
2019-11-27 15:14 ` Christian Zigotzky
2019-12-04 8:56 ` Christoph Hellwig
2019-12-04 8:56 ` Christoph Hellwig
2019-12-04 8:56 ` Christoph Hellwig
2019-12-04 12:22 ` Christian Zigotzky
2019-12-04 12:22 ` Christian Zigotzky
2019-12-04 12:22 ` Christian Zigotzky
2019-12-04 12:22 ` Christian Zigotzky
2020-01-10 7:10 ` Christian Zigotzky
2020-01-10 7:10 ` Christian Zigotzky
2020-01-10 7:10 ` Christian Zigotzky
2020-01-15 15:18 ` Christoph Hellwig
2020-01-15 15:18 ` Christoph Hellwig
2020-01-15 15:18 ` Christoph Hellwig
-- strict thread matches above, loose matches on Subject: below --
2019-10-29 4:49 Christian Zigotzky
2019-10-30 0:10 ` Christian Zigotzky
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