On Wed, 2016-04-20 at 16:18 -0300, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
>
> This function had copies in 3 different files. Unify them in kernel.h.
[]
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
[]
> @@ -53,6 +53,12 @@
>
> #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
>
> +static inline void __user *u64_to_user_ptr(u64 address)
> +{
> + typecheck(u64, address);
> + return (void __user *)(uintptr_t)address;
> +}
> +
This won't work because by the time address is checked
address is already u64
This would need to be something like
#define u64_to_user_ptr(x) \
({ \
typecheck(u64, x); \
u64_to_user_ptr(x); \
})
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