Re: Regression for Power PC in 4.14-rc0 - bisected to commit 31bfdb036f12

From: Andrew Donnellan
Date: Wed Sep 13 2017 - 20:39:06 EST

On 14/09/17 10:07, Larry Finger wrote:
When booting my PowerBook Aluminum G4, I get a pop-up screen that says "The system is running in low-graphics mode. Your screen, graphics card, and input device settings could not be detected correctly. You will need to configure these yourself." This is a big-endian 74xx CPU. The lscpu command says it is a PowerBook5,6 model.

This problem has been bisected to commit 31bfdb036f12 ("powerpc: Use instruction emulation infrastructure to handle alignment faults"). I am confident of the accuracy of the bisection.

Attached is the configuration.

Try with

(A selftest for the instruction emulation will make its way upstream eventually...)

Andrew Donnellan OzLabs, ADL Canberra
andrew.donnellan@xxxxxxxxxxx IBM Australia Limited