Subject: Re: powerpc/pseries: Use new defines when calling h_set_mode

From: Alexander Graf <[email-masked]>
Date: Thu, 29 May 2014 23:27:23 +0200

On 29.05.14 09:45, Michael Neuling wrote:
>>> +/* Values for 2nd argument to H_SET_MODE */
>>> +#define H_SET_MODE_RESOURCE_SET_CIABR        1
>>> +#define H_SET_MODE_RESOURCE_SET_DAWR        2
>>> +#define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE    3
>>> +#define H_SET_MODE_RESOURCE_LE            4
>>
>> Much better, but I think you want to make use of these in non-kvm code too,
>> no? At least the LE one is definitely already implemented as call :)
> Sure but that's a different patch.... below.

Ben, how would you like to handle these 2 patches? If you give me an ack 
I can just put this patch into my kvm queue. Alternatively we could both 
carry a patch that adds the H_SET_MODE header bits only and whoever hits 
Linus' tree first wins ;).

Alex

>
> Mikey
>
>
> powerpc/pseries: Use new defines when calling h_set_mode
>
> Now that we define these in the KVM code, use these defines when we call
> h_set_mode.  No functional change.
>
> Signed-off-by: Michael Neuling <[email-masked]>
> --
> This depends on the KVM h_set_mode patches.
>
> diff --git a/arch/powerpc/include/asm/plpar_wrappers.h b/arch/powerpc/include/asm/plpar_wrappers.h
> index 12c32c5..67859ed 100644
> --- a/arch/powerpc/include/asm/plpar_wrappers.h
> +++ b/arch/powerpc/include/asm/plpar_wrappers.h
> @@ -273,7 +273,7 @@ static inline long plpar_set_mode(unsigned long mflags, unsigned long resource,
>   static inline long enable_reloc_on_exceptions(void)
>   {
>   	/* mflags = 3: Exceptions at 0xC000000000004000 */
> -	return plpar_set_mode(3, 3, 0, 0);
> +	return plpar_set_mode(3, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0);
>   }
>   
>   /*
> @@ -284,7 +284,7 @@ static inline long enable_reloc_on_exceptions(void)
>    * returns H_SUCCESS.
>    */
>   static inline long disable_reloc_on_exceptions(void) {
> -	return plpar_set_mode(0, 3, 0, 0);
> +	return plpar_set_mode(0, H_SET_MODE_RESOURCE_ADDR_TRANS_MODE, 0, 0);
>   }
>   
>   /*
> @@ -297,7 +297,7 @@ static inline long disable_reloc_on_exceptions(void) {
>   static inline long enable_big_endian_exceptions(void)
>   {
>   	/* mflags = 0: big endian exceptions */
> -	return plpar_set_mode(0, 4, 0, 0);
> +	return plpar_set_mode(0, H_SET_MODE_RESOURCE_LE, 0, 0);
>   }
>   
>   /*
> @@ -310,17 +310,17 @@ static inline long enable_big_endian_exceptions(void)
>   static inline long enable_little_endian_exceptions(void)
>   {
>   	/* mflags = 1: little endian exceptions */
> -	return plpar_set_mode(1, 4, 0, 0);
> +	return plpar_set_mode(1, H_SET_MODE_RESOURCE_LE, 0, 0);
>   }
>   
>   static inline long plapr_set_ciabr(unsigned long ciabr)
>   {
> -	return plpar_set_mode(0, 1, ciabr, 0);
> +	return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_CIABR, ciabr, 0);
>   }
>   
>   static inline long plapr_set_watchpoint0(unsigned long dawr0, unsigned long dawrx0)
>   {
> -	return plpar_set_mode(0, 2, dawr0, dawrx0);
> +	return plpar_set_mode(0, H_SET_MODE_RESOURCE_SET_DAWR, dawr0, dawrx0);
>   }
>   
>   #endif /* _ASM_POWERPC_PLPAR_WRAPPERS_H */
>