From: Christian Zigotzky <chzigotzky@xenosoft.de>
To: Mike Rapoport <rppt@linux.ibm.com>, Christoph Hellwig <hch@lst.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>,
nsaenzjulienne@suse.de
Subject: Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M
Date: Wed, 27 Nov 2019 16:14:43 +0100 [thread overview]
Message-ID: <6a4289cf-d2b5-2357-f1ad-eeab44ab3b1e@xenosoft.de> (raw)
In-Reply-To: <20191127065624.GB16913@linux.ibm.com>
On 27 November 2019 at 07:56 am, Mike Rapoport wrote:
>
> Maybe we'll simply force bottom up allocation before calling
> swiotlb_init()? Anyway, it's the last memblock allocation.
>
>
> diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
> index 62f74b1b33bd..771e6cf7e2b9 100644
> --- a/arch/powerpc/mm/mem.c
> +++ b/arch/powerpc/mm/mem.c
> @@ -286,14 +286,15 @@ void __init mem_init(void)
> /*
> * book3s is limited to 16 page sizes due to encoding this in
> * a 4-bit field for slices.
> */
> BUILD_BUG_ON(MMU_PAGE_COUNT > 16);
>
> #ifdef CONFIG_SWIOTLB
> + memblock_set_bottom_up(true);
> swiotlb_init(0);
> #endif
>
> high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
> set_max_mapnr(max_pfn);
> memblock_free_all();
>
>
Hello Mike,
I tested the latest Git kernel with your new patch today. My PCI TV card
works without any problems.
Thanks,
Christian
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next prev parent reply other threads:[~2019-11-27 15:15 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <F1EBB706-73DF-430E-9020-C214EC8ED5DA@xenosoft.de>
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 [this message]
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
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