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

From: David Laight
Date: Thu Oct 13 2011 - 11:45:20 EST



> 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


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/