[PATCH] riscv: Provide all alternative macros all the time

[PATCH] riscv: Provide all alternative macros all the time

[Andrew Jones]

We need to provide all six forms of the alternative macros
(ALTERNATIVE, ALTERNATIVE_2, _ALTERNATIVE_CFG, _ALTERNATIVE_CFG_2,
__ALTERNATIVE_CFG, __ALTERNATIVE_CFG_2) for all four cases derived
from the two ifdefs (RISCV_ALTERNATIVE, __ASSEMBLY__) in order to
ensure all configs can compile. Define this missing ones and ensure
all are defined to consume all parameters passed.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202504130710.3IKz6Ibs-lkp@intel.com/
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
---
 arch/riscv/include/asm/alternative-macros.h | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
index 721ec275ce57..231d777d936c 100644
--- a/arch/riscv/include/asm/alternative-macros.h
+++ b/arch/riscv/include/asm/alternative-macros.h
@@ -115,24 +115,19 @@
 	\old_c
 .endm
 
-#define _ALTERNATIVE_CFG(old_c, ...)	\
-	ALTERNATIVE_CFG old_c
-
-#define _ALTERNATIVE_CFG_2(old_c, ...)	\
-	ALTERNATIVE_CFG old_c
+#define __ALTERNATIVE_CFG(old_c, ...)		ALTERNATIVE_CFG old_c
+#define __ALTERNATIVE_CFG_2(old_c, ...)		ALTERNATIVE_CFG old_c
 
 #else /* !__ASSEMBLY__ */
 
-#define __ALTERNATIVE_CFG(old_c)	\
-	old_c "\n"
+#define __ALTERNATIVE_CFG(old_c, ...)		old_c "\n"
+#define __ALTERNATIVE_CFG_2(old_c, ...)		old_c "\n"
 
-#define _ALTERNATIVE_CFG(old_c, ...)	\
-	__ALTERNATIVE_CFG(old_c)
+#endif /* __ASSEMBLY__ */
 
-#define _ALTERNATIVE_CFG_2(old_c, ...)	\
-	__ALTERNATIVE_CFG(old_c)
+#define _ALTERNATIVE_CFG(old_c, ...)		__ALTERNATIVE_CFG(old_c)
+#define _ALTERNATIVE_CFG_2(old_c, ...)		__ALTERNATIVE_CFG_2(old_c)
 
-#endif /* __ASSEMBLY__ */
 #endif /* CONFIG_RISCV_ALTERNATIVE */
 
 /*
-- 
2.49.0

Re: [PATCH] riscv: Provide all alternative macros all the time

[Alexandre Ghiti]

Hi Drew,

On 14/04/2025 14:09, Andrew Jones wrote:
> We need to provide all six forms of the alternative macros
> (ALTERNATIVE, ALTERNATIVE_2, _ALTERNATIVE_CFG, _ALTERNATIVE_CFG_2,
> __ALTERNATIVE_CFG, __ALTERNATIVE_CFG_2) for all four cases derived
> from the two ifdefs (RISCV_ALTERNATIVE, __ASSEMBLY__) in order to
> ensure all configs can compile. Define this missing ones and ensure
> all are defined to consume all parameters passed.
>
> Reported-by: kernel test robot <lkp@intel.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202504130710.3IKz6Ibs-lkp@intel.com/
> Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
> ---
>   arch/riscv/include/asm/alternative-macros.h | 19 +++++++------------
>   1 file changed, 7 insertions(+), 12 deletions(-)
>
> diff --git a/arch/riscv/include/asm/alternative-macros.h b/arch/riscv/include/asm/alternative-macros.h
> index 721ec275ce57..231d777d936c 100644
> --- a/arch/riscv/include/asm/alternative-macros.h
> +++ b/arch/riscv/include/asm/alternative-macros.h
> @@ -115,24 +115,19 @@
>   	\old_c
>   .endm
>   
> -#define _ALTERNATIVE_CFG(old_c, ...)	\
> -	ALTERNATIVE_CFG old_c
> -
> -#define _ALTERNATIVE_CFG_2(old_c, ...)	\
> -	ALTERNATIVE_CFG old_c
> +#define __ALTERNATIVE_CFG(old_c, ...)		ALTERNATIVE_CFG old_c
> +#define __ALTERNATIVE_CFG_2(old_c, ...)		ALTERNATIVE_CFG old_c
>   
>   #else /* !__ASSEMBLY__ */
>   
> -#define __ALTERNATIVE_CFG(old_c)	\
> -	old_c "\n"
> +#define __ALTERNATIVE_CFG(old_c, ...)		old_c "\n"
> +#define __ALTERNATIVE_CFG_2(old_c, ...)		old_c "\n"
>   
> -#define _ALTERNATIVE_CFG(old_c, ...)	\
> -	__ALTERNATIVE_CFG(old_c)
> +#endif /* __ASSEMBLY__ */
>   
> -#define _ALTERNATIVE_CFG_2(old_c, ...)	\
> -	__ALTERNATIVE_CFG(old_c)
> +#define _ALTERNATIVE_CFG(old_c, ...)		__ALTERNATIVE_CFG(old_c)
> +#define _ALTERNATIVE_CFG_2(old_c, ...)		__ALTERNATIVE_CFG_2(old_c)
>   
> -#endif /* __ASSEMBLY__ */
>   #endif /* CONFIG_RISCV_ALTERNATIVE */
>   
>   /*


I could not find the right Fixes tag, so unless you have one, I'll add 
the commit pointed at by kernel test robot.

You can add:

Tested-by: Alexandre Ghiti <alexghiti@rivosinc.com>

Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>

Thanks for looking into this!

Alex

Re: [PATCH] riscv: Provide all alternative macros all the time

[patchwork-bot+linux-riscv]

Hello:

This patch was applied to riscv/linux.git (fixes)
by Alexandre Ghiti <alexghiti@rivosinc.com>:

On Mon, 14 Apr 2025 14:09:48 +0200 you wrote:
> We need to provide all six forms of the alternative macros
> (ALTERNATIVE, ALTERNATIVE_2, _ALTERNATIVE_CFG, _ALTERNATIVE_CFG_2,
> __ALTERNATIVE_CFG, __ALTERNATIVE_CFG_2) for all four cases derived
> from the two ifdefs (RISCV_ALTERNATIVE, __ASSEMBLY__) in order to
> ensure all configs can compile. Define this missing ones and ensure
> all are defined to consume all parameters passed.
> 
> [...]

Here is the summary with links:
  - riscv: Provide all alternative macros all the time
    https://git.kernel.org/riscv/c/fb53a9aa5f5b

You are awesome, thank you!
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