[PATCH][v2] uio: Support 36-bit physical addresses on 32-bit systems

David Laight David.Laight at ACULAB.COM
Fri Oct 14 02:37:20 EST 2011


 
> Kumar Gala wrote:
> >>> >> +       phys_addr_t             addr;
> >> > 
> >> > Please add a comment here saying:
> >> > 
> >> > 1) That 'addr' can be a virtual or physical address
> > The code and everything else makes that clear
> 
> I'm sorry, but I have to strongly disagree here.  It is *NOT* 
> clear that a variable of type 'phys_addr_t' can hold something
> that is not a physical address.

Since there is a discriminating field, could a union be used?
At a guess the type of the address is constrained between
produces and consumer??

	David




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