Excerpts from Christophe Leroy's message of January 11, 2022 1:29 am:
> CC arch/powerpc/kernel/time.o
> In file included from <command-line>:
> ./arch/powerpc/include/asm/hw_irq.h: In function 'do_hard_irq_enable':
> ././include/linux/compiler_types.h:335:45: error: call to
> '__compiletime_assert_35' declared with attribute error: BUILD_BUG failed
> 335 | _compiletime_assert(condition, msg,
> __compiletime_assert_, __COUNTER__)
> | ^
> ././include/linux/compiler_types.h:316:25: note: in definition of macro
> '__compiletime_assert'
> 316 | prefix ## suffix();
> \
> | ^~~~~~
> ././include/linux/compiler_types.h:335:9: note: in expansion of macro
> '_compiletime_assert'
> 335 | _compiletime_assert(condition, msg,
> __compiletime_assert_, __COUNTER__)
> | ^~~~~~~~~~~~~~~~~~~
> ./include/linux/build_bug.h:39:37: note: in expansion of macro
> 'compiletime_assert'
> 39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond),
> msg)
> | ^~~~~~~~~~~~~~~~~~
> ./include/linux/build_bug.h:59:21: note: in expansion of macro
> 'BUILD_BUG_ON_MSG'
> 59 | #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
> | ^~~~~~~~~~~~~~~~
> ./arch/powerpc/include/asm/hw_irq.h:483:9: note: in expansion of macro
> 'BUILD_BUG'
> 483 | BUILD_BUG();
> | ^~~~~~~~~
>
> should_hard_irq_enable() returns false on PPC32 so this BUILD_BUG() shouldn't
> trigger.
>
> Force inlining of should_hard_irq_enable()
>
> Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu>
> Fixes: 0faf20a1ad16 ("powerpc/64s/interrupt: Don't enable MSR[EE] in irq
> handlers unless perf is in use")
> Cc: Nicholas Piggin <npig...@gmail.com>
Acked-by: Nicholas Piggin <npig...@gmail.com>
Thanks,
Nick
> ---
> arch/powerpc/include/asm/hw_irq.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/include/asm/hw_irq.h
> b/arch/powerpc/include/asm/hw_irq.h
> index a58fb4aa6c81..674e5aaafcbd 100644
> --- a/arch/powerpc/include/asm/hw_irq.h
> +++ b/arch/powerpc/include/asm/hw_irq.h
> @@ -473,7 +473,7 @@ static inline bool arch_irq_disabled_regs(struct pt_regs
> *regs)
> return !(regs->msr & MSR_EE);
> }
>
> -static inline bool should_hard_irq_enable(void)
> +static __always_inline bool should_hard_irq_enable(void)
> {
> return false;
> }
> --
> 2.33.1
>
