(subset) [PATCH v2 4/4] powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT

[Michael Ellerman]

On Wed, 23 Aug 2023 15:53:17 +1000, Michael Ellerman wrote:
> lppaca_shared_proc() takes a pointer to the lppaca which is typically
> accessed through get_lppaca().  With DEBUG_PREEMPT enabled, this leads
> to checking if preemption is enabled, for example:
> 
>   BUG: using smp_processor_id() in preemptible [00000000] code: grep/10693
>   caller is lparcfg_data+0x408/0x19a0
>   CPU: 4 PID: 10693 Comm: grep Not tainted 6.5.0-rc3 #2
>   Call Trace:
>     dump_stack_lvl+0x154/0x200 (unreliable)
>     check_preemption_disabled+0x214/0x220
>     lparcfg_data+0x408/0x19a0
>     ...
> 
> [...]

Applied to powerpc/next.

[4/4] powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT
      https://git.kernel.org/powerpc/c/eac030b22ea12cdfcbb2e941c21c03964403c63f

cheers