Re: Getting Physical address of a buffer
Re: Getting Physical address of a buffer
- Subject: Re: Getting Physical address of a buffer
- From: shailesh jain <email@hidden>
- Date: Fri, 6 Aug 2010 01:47:07 -0700
terry ?
On Thu, Aug 5, 2010 at 11:10 AM, shailesh jain
<email@hidden> wrote:
> Hello again!
> I have a kernel extension (which is not an IOKit driver) that uses
> OSMalloc_ KPI to allocate buffer. I pass in OSMT_DEFAULT so that
> buffers that it returns are wired to memory. I have a use case where
> in I would like
> to get physical address of the first byte of the buffer. I understand
> that buffer will not be contiguous in Physical memory and I am fine
> with that. Do we have such an interface ---
>
> something like: physAddr = virt_to_phys(buffer); // Gives physical
> address of first byte of the buffer
>
>
> --
> Shailesh Jain
>
--
Shailesh Jain
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