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SubjectRE: [PATCH] powerpc: Fix lazy preemption for powerpc 32bit
Date
> From: Sebastian Andrzej Siewior [mailto:bigeasy@linutronix.de] 
> On 2020-03-18 21:26:40 [+0100], Thomas Graziadei wrote:
>> From: Thomas Graziadei <thomas.graziadei@omicronenergy.com>
>>
>> The 32bit powerpc assembler implementation of the lazy preemption set
>> the _TIF_PERSYSCALL_MASK on the low word. This could lead to modprobe
>> segfaults and a kernel panic - not syncing: Attempt to kill init!
>> issue.
>>
>> Fixed by shifting the mask by 16 bit using andis and lis.
>
> bah. Thank you for catching this.
> Still e500 based powerpc I assume?

Well thanks for the great work and yes still e500 powerpc based.

>
>> Signed-off-by: Thomas Graziadei <thomas.graziadei@omicronenergy.com>
>
> Sebastian

Thomas
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