Bug 205201 - Booting halts if Dawicontrol DC-2976 UW SCSI board installed, unless RAM size limited to 3500M

Wed Oct 30 11:10:19 AEDT 2019

Hello,
Kernel 5.4-rc5: Error message without limitation to 3.5G RAM: 
[ 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 the 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/commit/?id=8d6973327ee84c2f40dd9efd8928d4a1186c96e2

> On 29. Oct 2019, at 05:49, Christian Zigotzky <chzigotzky at xenosoft.de> wrote:
> 
> Hello,
> 
> The bug with some PCI devices if you have more than 3.5G installed still exist in the RC5. Could you please look in the following bug report.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=205201
> 
> Thanks,
> Christian