Nicholas Piggin writes:
> Michael Ellerman's on January 17, 2019 9:35 pm:
>> Currently in system_call_exit() we have an optimisation where we
>> disable MSR_RI (recoverable interrupt) and MSR_EE (external interrupt
>> enable) in a single mtmsrd instruction.
>>
>> Unfortunately this will no
Michael Ellerman's on January 17, 2019 9:35 pm:
> Currently in system_call_exit() we have an optimisation where we
> disable MSR_RI (recoverable interrupt) and MSR_EE (external interrupt
> enable) in a single mtmsrd instruction.
>
> Unfortunately this will no longer work with THREAD_INFO_IN_TASK,
Currently in system_call_exit() we have an optimisation where we
disable MSR_RI (recoverable interrupt) and MSR_EE (external interrupt
enable) in a single mtmsrd instruction.
Unfortunately this will no longer work with THREAD_INFO_IN_TASK,
because then the load of TI_FLAGS might fault and
