Re: Boot problem on PPC with 4.4-git - Bisected to commit 21266be

From: Dan Williams
Date: Wed Jan 20 2016 - 15:08:33 EST


On Wed, Jan 20, 2016 at 12:01 PM, Larry Finger
<Larry.Finger@xxxxxxxxxxxx> wrote:
> My PowerBook G4 Aluminum with a 32-bit PPC processor fails to boot for the
> 4.4-git series. The problem was bisected to commit 21266be. It took a while
> to figure out why a commit that only rearranges the Kconfig files could
> cause the problem.
>
> The answer came when I read the commit message for 90a545e98126 and saw that
> "Recompiling with CONFIG_IO_STRICT_DEVMEM=n" might be necessary. After I
> made that change, the system boots.
>
> If it is the graphics hardware driver at fault, the VGA controller is listed
> as an ATI RV350 [Mobility Radeon 9600 M10] with PCI ID 1002:4350. It uses
> radeon as the driver.
>
> I'm not sure if this is a bug in the configuration, but I know that
> selecting the default answer to all the new configuration parameters leaves
> me with a machine that is unbootable.

I agree that the default configuration should remain bootable. I'll
send a change that does not force that default.

Thanks for the report and sorry for the inconvenience.