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From: Christian Zigotzky <chzigotzky@xenosoft.de>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-arch@vger.kernel.org, darren@stevens-zone.net,
	mad skateman <madskateman@gmail.com>,
	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: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M
Date: Sat, 16 Nov 2019 08:06:05 +0100	[thread overview]
Message-ID: <F1EBB706-73DF-430E-9020-C214EC8ED5DA@xenosoft.de> (raw)

FYI: Source files of the Dawicontrol DC 2976 UW SCSI board (PCI): https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/scsi/sym53c8xx_2?h=v5.4-rc7

/*
 *  DMA addressing mode.
 *
 *  0 : 32 bit addressing for all chips.
 *  1 : 40 bit addressing when supported by chip.
 *  2 : 64 bit addressing when supported by chip,
 *      limited to 16 segments of 4 GB -> 64 GB max.
 */
#define   SYM_CONF_DMA_ADDRESSING_MODE CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE

Cyrus config:

CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1

I will configure “0 : 32 bit addressing for all chips” for the RC8. Maybe this is the solution.

> On 13. Nov 2019, at 12:02, Christoph Hellwig <hch@lst.de> wrote:
> 
> Interesting.  Give me some time to come up with a real fix, as drivers
> really should not mess with GFP flags for these allocations, and even
> if they did swiotlb is supposed to take care of any resulting problems.

             reply	other threads:[~2019-11-16  7:08 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-16  7:06 Christian Zigotzky [this message]
2019-11-21  7:29 ` Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M Christoph Hellwig
2019-11-21 12:16   ` Christian Zigotzky
2019-11-21 12:21     ` Christian Zigotzky
2019-11-21 13:33       ` Robin Murphy
2019-11-21 16:34         ` Christian Zigotzky
2019-11-21 18:02           ` Christoph Hellwig
2019-11-21 18:21             ` Christian Zigotzky
2019-11-23 11:42             ` Christian Zigotzky
2019-11-25  7:39               ` Christoph Hellwig
2019-11-25  9:32                 ` Mike Rapoport
2019-11-25 16:38                   ` Christian Zigotzky
2019-11-26 11:57                   ` Christian Zigotzky
2019-11-25 16:36                 ` Christian Zigotzky
2019-11-26 11:26                 ` Christian Zigotzky
2019-11-26 16:40                   ` Christoph Hellwig
2019-11-27  6:56                     ` Mike Rapoport
2019-11-27  8:53                       ` Christoph Hellwig
2019-11-27 15:14                       ` Christian Zigotzky
2019-12-04  8:56                       ` Christoph Hellwig
2019-12-04 12:22                         ` Christian Zigotzky
2020-01-10  7:10                         ` Christian Zigotzky
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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