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Subject: Re: Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board
 installed, unless RAM size limited to 3500M
From: Christian Zigotzky <chzigotzky@xenosoft.de>
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Hello,
Kernel 5.4-rc5: Error message without limitation to 3.5G RAM:=20
[ 25.654852] bttv 1000:04:05.0: overflow 0x00000000fe077000+4096 of DMA mask=
 ffffffff bus mask df000000
The kernel configured the bttv card for DMA in the upper region of RAM but t=
he device believes that it only supports 32-bit addressing.
The TV card works without the limitation to 3.5G RAM with the kernel 4.20.17=
. The issue has started with the PowerPC updates 4.21-1 [1]
Cheers,
Christian
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commi=
t/?id=3D8d6973327ee84c2f40dd9efd8928d4a1186c96e2


> On 29. Oct 2019, at 05:49, Christian Zigotzky <chzigotzky@xenosoft.de> wro=
te:
>=20
> Hello,
>=20
> The bug with some PCI devices if you have more than 3.5G installed still e=
xist in the RC5. Could you please look in the following bug report.
>=20
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=3D205201
>=20
> Thanks,
> Christian