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 19:02:14 -0700
Thank y'all! Let's see how things work out. ;)
On Fri, Aug 6, 2010 at 12:36 PM, Terry Lambert <email@hidden> wrote:
> What Shantonu and Mike said.
>
> -- Terry
>
> On Aug 6, 2010, at 1:47 AM, shailesh jain wrote:
>> 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
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