Re: deprecating fix->mmio_start and smem_start

["Scott D. Davilla" <davilla@4pi.com>]

>On Tue, 22 Apr 2008, Benjamin Herrenschmidt wrote:
>>  We currently have a problem with those two members of struct
>>  fb_fix_screeninfo. The struct contains an "unsigned long" which means
>>  that:
>>
>>  - 64 bits kernels with 32 bits userspace can't pass a complete address
>>  - 32 bits machines with 64 bits resource_size_t can't pass a complete
>>  address
>>  - The structure isn't even properly padded to be 32/64 bits neutral in
>>  the first place.
>>
>  > We could define new versions of the struct with new get/set ioctls,
>>  or we could try to just deprecate those fields. What do you guys think ?
>
>As userspace doesn't really need those fields[1], we can easily 
>deprecate them.
>

kexec uses FBIOGET_FSCREENINFO and FBIOGET_VSCREENINFO. So if these 
ioctls changes, it will possibly break kexec under vesafb and efifb.

Scott


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