Convert virtual address to physical address

[Garrett Cooper]

On May 25, 2015, at 6:46, Pratik Singhal <ps06756 at gmail.com> wrote:

> I need to convert a kernel virtual address to physical address. To do that,
> as far as I know, we have 2 macros :-
> 
> vtophys :- In sys/arm/include/pmap.h
> VTOP :- In sys/boot/i386/libi386/amd64_tramp.S
> 
> Since, I am working on arm kernel with ARM_NEW_PMAP option, I am using
> vtophys macro by including the pmap.h file.
> 
> Now, if I compile the kernel after including the pmap.h file, I am getting
> the error :-
> 
> error: field has incomplete type 'struct pmap_statistics'
>        struct pmap_statistics  pm_stats;       /* pmap statictics */
>                                ^
> ./machine/pmap-v6.h:127:9: note: forward declaration of 'struct
> pmap_statistics'
>        struct pmap_statistics  pm_stats;       /* pmap statictics */
> 
> How, should I resolve this error ? Or is there some other way to convert
> virtual address to physical address for arm kernel ?

Try using `#include <vm/pmap.h>` instead.
Cheers,
-NGie
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