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Message-Id: <77fb14dd-26d5-a647-bed1-142d56d26374@au1.ibm.com> Date: Thu, 14 Sep 2017 10:37:24 +1000 From: Andrew Donnellan <andrew.donnellan@....ibm.com> To: Larry Finger <Larry.Finger@...inger.net>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...abs.org> Cc: linuxppc-dev@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org> Subject: 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@....ibm.com IBM Australia Limited
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