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

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 https://patchwork.ozlabs.org/patch/813153/

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

-- 
Andrew Donnellan              OzLabs, ADL Canberra
andrew.donnellan@au1.ibm.com  IBM Australia Limited

On 09/13/2017 07:37 PM, Andrew Donnellan wrote:

On 14/09/17 10:07, Larry Finger wrote:

quoted

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 https://patchwork.ozlabs.org/patch/813153/

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

That patch does fix my problem. Thanks for the quick response.

Larry