Was there a way to bind a shared memory object onto a fixed physical memory address?

[kipade]

Im sorry that my there were something wrong about my notebook for a half 
of month.

Here, I want to use system shared memory API to share data across 
processes, but I want it use a specified

range of memory knowned by a slave core such as DSP, etc. If I can do?

thanks.


On 2020/4/2 下午8:19, Greg KH wrote:
> On Thu, Apr 02, 2020 at 05:38:31PM +0800, kipade wrote:
>> As the topic, I want to specify a fixed physical memory space to a shared memory object, which can use
>> shm_XXX api to access the memory. Of course I do not want to use mmap api to map /dev/mem device
>> memory into user program.
> Step back and tell us exactly what problem you have, that you have come
> up to this type of solution being necessary?  What do you think you can
> solve by doing this?
>
> thanks,
>
> greg k-h