Re: remap_page_range() vs. remap_pfn_range()

[linux-os (Dick Johnson)]

On Thu, 16 Mar 2006, Brian D. McGrew wrote:

> I've seen the change in the kernel for this call so I changed my device
> drive to use the new call and now every time I access the device the
> machine gets really unstable and crashes after a minute or so.
>
> When changing over the call, what else do I need to change?  All I did
> was change the one call to the other.  Do I have to do anything else?
>
> If someone can't help me, can anybody recommend a consultant that I can
> hire to get this working?  I've already wasted three months on something
> that is way beyond me.
>
> TIA,
>
> :b!
>
> Brian D. McGrew { brian@xxxxxxxxxxxxx || brian@xxxxxxxxxxxxxxxxxxx }
> --
>> Those of you who think you know it all,
>  really annoy those of us who do!

Look at the prototype(s)! One takes elements from a structure. The
newer(s) one take both elements from a structure PLUS a pointer to
the structure itself  ... plus .... !

Here are some macros for various kernel versions....

Linux-2.6.10 to linux-current
#define REMAP(a,b,c,d,e) remap_pfn_range((a), (b), (c) >> PAGE_SHIFT, (d), (e))

Linux-2.6.9 Linux-2.6.8
#define REMAP(a,b,c,d,e) remap_page_range((a), (b), (c), (d), (e))

Linux-2.4.n to linux-2.6.5
#define REMAP(a,b,c,d,e) remap_page_range((b), (c), (d), (e))


Cheers,
Dick Johnson
Penguin : Linux version 2.6.15.4 on an i686 machine (5589.54 BogoMips).
Warning : 98.36% of all statistics are fiction, book release in April.
_


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