Re: [PATCH v3 1/5] memblock test: fix implicit declaration of function 'virt_to_phys'

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On Fri, Aug 02, 2024 at 01:09:19AM +0000, Wei Yang wrote:
> Commit 94ff46de4a73 ("memblock: Move late alloc warning down to phys
> alloc") introduce the usage of virt_to_phys(), which is not defined in
> memblock tests.
> 
> Define it in mm.h to fix the build error.
> 
> Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx>
> 
> ---
> v3: use static inline as phys_to_virt
> v2: move definition to mm.h
> ---
>  tools/include/linux/mm.h | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/tools/include/linux/mm.h b/tools/include/linux/mm.h
> index cad4f2927983..c9e915914add 100644
> --- a/tools/include/linux/mm.h
> +++ b/tools/include/linux/mm.h
> @@ -25,6 +25,12 @@ static inline void *phys_to_virt(unsigned long address)
>  	return __va(address);
>  }
>  
> +#define virt_to_phys virt_to_phys
> +static inline phys_addr_t virt_to_phys(volatile void *address)

Why volatilte?

> +{
> +	return (unsigned long)address;

This should be phys_addr_t, look at its definition in tools/include/linux/types.h

> +}
> +
>  void reserve_bootmem_region(phys_addr_t start, phys_addr_t end, int nid);
>  
>  static inline void totalram_pages_inc(void)
> -- 
> 2.34.1
> 

-- 
Sincerely yours,
Mike.




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